CVE-2021-26085 (GCVE-0-2021-26085)
Vulnerability from cvelistv5 – Published: 2021-08-03 00:00 – Updated: 2025-10-21 23:25Summary
Affected versions of Atlassian Confluence Server allow remote attackers to view restricted resources via a Pre-Authorization Arbitrary File Read vulnerability in the /s/ endpoint. The affected versions are before version 7.4.10, and from version 7.5.0 before 7.12.3.
Severity
5.3 (Medium)
SSVC
Exploitation: active
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-02-07 12:29 UTC
CWE
- Pre-Authorization Arbitrary File Read
- CWE-425 - Direct Request ('Forced Browsing')
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://jira.atlassian.com/browse/CONFSERVER-67893 | x_refsource_MISC |
| http://packetstormsecurity.com/files/164401/Atlas… | x_refsource_MISC |
| https://www.cisa.gov/known-exploited-vulnerabilit… | government-resource |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Atlassian | Confluence Server |
Affected:
unspecified , < 7.4.10
(custom)
Affected: 7.5.0 , < unspecified (custom) Affected: unspecified , < 7.12.3 (custom) |
|
| Atlassian | Confluence Data Center |
Affected:
unspecified , < 7.4.10
(custom)
Affected: 7.5.0 , < unspecified (custom) Affected: unspecified , < 7.12.3 (custom) |
Date Public
2021-07-29 00:00
CISA
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: e8f04eb4-35af-419a-b6ef-07f497090b63
Exploited: Yes
Timestamps
First Seen: 2022-03-28
Asserted: 2022-03-28
Scope
Notes: Atlassian Confluence Server Pre-Authorization Arbitrary File Read Vulnerability | Affected: Atlassian / Confluence Server | Description: Affected versions of Atlassian Confluence Server allow remote attackers to view restricted resources via a pre-authorization arbitrary file read vulnerability in the /s/ endpoint. | Required action: Apply updates per vendor instructions. | Due date: 2022-04-18 | Known ransomware campaign use (KEV): Known | Notes (KEV): https://nvd.nist.gov/vuln/detail/CVE-2021-26085
Evidence
Type: Vendor Report
Signal: Successful Exploitation
Confidence: 80%
Source: cisa-kev
Details
| Cwes | CWE-425 |
|---|---|
| Feed | CISA Known Exploited Vulnerabilities Catalog |
| Product | Confluence Server |
| Due Date | 2022-04-18 |
| Date Added | 2022-03-28 |
| Vendorproject | Atlassian |
| Vulnerabilityname | Atlassian Confluence Server Pre-Authorization Arbitrary File Read Vulnerability |
| Knownransomwarecampaignuse | Known |
References
Created: 2026-10-02 08:10 CEST
| Updated: 2026-10-02 08:10 CEST
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 366978ed-6a4e-4ca0-bf7f-6bbb066efb9c
Exploited: Yes
Timestamps
First Seen: 2022-03-28
Asserted: 2022-03-28
Scope
Notes: Affected versions of Atlassian Confluence Server allow remote attackers to view restricted resources via a Pre-Authorization Arbitrary File Read... | Affected: Atlassian / Confluence Server, Confluence Data Center | CVSS: 5.3 (MEDIUM) | EPSS: 0.99937 | Used in malware: yes | Not yet in CISA KEV: False
Evidence
Type: Public Report
Signal: Confirmed Compromise
Confidence: 70%
Source: previdian
Details
| Feed | Previdian (previdian.com) |
|---|---|
| Title | Affected versions of Atlassian Confluence Server allow remote attackers to view restricted resources via a Pre-Authorization Arbitrary File Read... |
| Cve Id | CVE-2021-26085 |
| Vendor | Atlassian |
| Ghsa Id | None |
| Product | Confluence Server, Confluence Data Center |
| Added Date | 2022-03-28T00:00:00.000Z |
| Cvss Score | 5.3 |
| Epss Score | 0.99937 |
| Previous Ids | |
| Cvss Severity | MEDIUM |
| Virtual Patch | False |
| Cvss Estimated | False |
| Epss Percentile | 0.99971 |
| Used In Malware | yes |
| Vulnerability Id | CVE-2021-26085 |
| Ahead Of Cisa Kev | None |
| Not Yet In Cisa Kev | False |
References
Created: 2026-10-02 09:11 CEST
| Updated: 2026-10-02 09:11 CEST
{
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-08-03T20:19:19.799Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://jira.atlassian.com/browse/CONFSERVER-67893"
},
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "http://packetstormsecurity.com/files/164401/Atlassian-Confluence-Server-7.5.1-Arbitrary-File-Read.html"
}
],
"title": "CVE Program Container"
},
{
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 5.3,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
"version": "3.1"
}
},
{
"other": {
"content": {
"id": "CVE-2021-26085",
"options": [
{
"Exploitation": "active"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2025-02-07T12:29:39.323995Z",
"version": "2.0.3"
},
"type": "ssvc"
}
},
{
"other": {
"content": {
"dateAdded": "2022-03-28",
"reference": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-26085"
},
"type": "kev"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-425",
"description": "CWE-425 Direct Request (\u0027Forced Browsing\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2025-10-21T23:25:39.229Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"references": [
{
"tags": [
"government-resource"
],
"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-26085"
}
],
"timeline": [
{
"lang": "en",
"time": "2022-03-28T00:00:00.000Z",
"value": "CVE-2021-26085 added to CISA KEV"
}
],
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "Confluence Server",
"vendor": "Atlassian",
"versions": [
{
"lessThan": "7.4.10",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
},
{
"lessThan": "unspecified",
"status": "affected",
"version": "7.5.0",
"versionType": "custom"
},
{
"lessThan": "7.12.3",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
}
]
},
{
"product": "Confluence Data Center",
"vendor": "Atlassian",
"versions": [
{
"lessThan": "7.4.10",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
},
{
"lessThan": "unspecified",
"status": "affected",
"version": "7.5.0",
"versionType": "custom"
},
{
"lessThan": "7.12.3",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
}
]
}
],
"datePublic": "2021-07-29T00:00:00.000Z",
"descriptions": [
{
"lang": "en",
"value": "Affected versions of Atlassian Confluence Server allow remote attackers to view restricted resources via a Pre-Authorization Arbitrary File Read vulnerability in the /s/ endpoint. The affected versions are before version 7.4.10, and from version 7.5.0 before 7.12.3."
}
],
"problemTypes": [
{
"descriptions": [
{
"description": "Pre-Authorization Arbitrary File Read",
"lang": "en",
"type": "text"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2021-10-05T16:06:18.000Z",
"orgId": "f08a6ab8-ed46-4c22-8884-d911ccfe3c66",
"shortName": "atlassian"
},
"references": [
{
"tags": [
"x_refsource_MISC"
],
"url": "https://jira.atlassian.com/browse/CONFSERVER-67893"
},
{
"tags": [
"x_refsource_MISC"
],
"url": "http://packetstormsecurity.com/files/164401/Atlassian-Confluence-Server-7.5.1-Arbitrary-File-Read.html"
}
],
"x_legacyV4Record": {
"CVE_data_meta": {
"ASSIGNER": "security@atlassian.com",
"DATE_PUBLIC": "2021-07-29T00:00:00",
"ID": "CVE-2021-26085",
"STATE": "PUBLIC"
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "Confluence Server",
"version": {
"version_data": [
{
"version_affected": "\u003c",
"version_value": "7.4.10"
},
{
"version_affected": "\u003e=",
"version_value": "7.5.0"
},
{
"version_affected": "\u003c",
"version_value": "7.12.3"
}
]
}
},
{
"product_name": "Confluence Data Center",
"version": {
"version_data": [
{
"version_affected": "\u003c",
"version_value": "7.4.10"
},
{
"version_affected": "\u003e=",
"version_value": "7.5.0"
},
{
"version_affected": "\u003c",
"version_value": "7.12.3"
}
]
}
}
]
},
"vendor_name": "Atlassian"
}
]
}
},
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
"description_data": [
{
"lang": "eng",
"value": "Affected versions of Atlassian Confluence Server allow remote attackers to view restricted resources via a Pre-Authorization Arbitrary File Read vulnerability in the /s/ endpoint. The affected versions are before version 7.4.10, and from version 7.5.0 before 7.12.3."
}
]
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "Pre-Authorization Arbitrary File Read"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "https://jira.atlassian.com/browse/CONFSERVER-67893",
"refsource": "MISC",
"url": "https://jira.atlassian.com/browse/CONFSERVER-67893"
},
{
"name": "http://packetstormsecurity.com/files/164401/Atlassian-Confluence-Server-7.5.1-Arbitrary-File-Read.html",
"refsource": "MISC",
"url": "http://packetstormsecurity.com/files/164401/Atlassian-Confluence-Server-7.5.1-Arbitrary-File-Read.html"
}
]
}
}
}
},
"cveMetadata": {
"assignerOrgId": "f08a6ab8-ed46-4c22-8884-d911ccfe3c66",
"assignerShortName": "atlassian",
"cveId": "CVE-2021-26085",
"datePublished": "2021-08-03T00:00:12.199Z",
"dateReserved": "2021-01-25T00:00:00.000Z",
"dateUpdated": "2025-10-21T23:25:39.229Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2021-26085",
"date": "2026-10-05",
"epss": "0.99937",
"percentile": "0.99971"
},
"nvd": {
"cve": {
"affected": [
{
"affectedData": [
{
"product": "Confluence Server",
"vendor": "Atlassian",
"versions": [
{
"lessThan": "7.4.10",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
},
{
"lessThan": "unspecified",
"status": "affected",
"version": "7.5.0",
"versionType": "custom"
},
{
"lessThan": "7.12.3",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
}
]
},
{
"product": "Confluence Data Center",
"vendor": "Atlassian",
"versions": [
{
"lessThan": "7.4.10",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
},
{
"lessThan": "unspecified",
"status": "affected",
"version": "7.5.0",
"versionType": "custom"
},
{
"lessThan": "7.12.3",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
}
]
}
],
"source": "security@atlassian.com"
}
],
"cisaActionDue": "2022-04-18",
"cisaExploitAdd": "2022-03-28",
"cisaRequiredAction": "Apply updates per vendor instructions.",
"cisaVulnerabilityName": "Atlassian Confluence Server Pre-Authorization Arbitrary File Read Vulnerability",
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:atlassian:confluence_data_center:*:*:*:*:*:*:*:*",
"matchCriteriaId": "83557716-7A48-48D5-85A9-4A29DBF4F511",
"versionEndExcluding": "7.4.10",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:atlassian:confluence_data_center:*:*:*:*:*:*:*:*",
"matchCriteriaId": "6A310D77-1FFF-4FFE-AD50-75DFF973EB3F",
"versionEndExcluding": "7.12.3",
"versionStartIncluding": "7.5.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:atlassian:confluence_server:*:*:*:*:*:*:*:*",
"matchCriteriaId": "4BA04112-3B97-491B-93E6-80C444274430",
"versionEndExcluding": "7.4.10",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:atlassian:confluence_server:*:*:*:*:*:*:*:*",
"matchCriteriaId": "B1148DF0-42C0-435F-A6EB-EFA93E10E8D7",
"versionEndExcluding": "7.12.3",
"versionStartIncluding": "7.5.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "Affected versions of Atlassian Confluence Server allow remote attackers to view restricted resources via a Pre-Authorization Arbitrary File Read vulnerability in the /s/ endpoint. The affected versions are before version 7.4.10, and from version 7.5.0 before 7.12.3."
},
{
"lang": "es",
"value": "Las versiones afectadas de Atlassian Confluence Server permiten a los atacantes remotos visualizar recursos restringidos por medio de una vulnerabilidad de lectura arbitraria de archivos de autorizaci\u00f3n previa en el endpoint /s/.\u0026#xa0;Las versiones afectadas son anteriores a la versi\u00f3n 7.4.10 y desde la versi\u00f3n 7.5.0 anteriores a 7.12.3"
}
],
"id": "CVE-2021-26085",
"lastModified": "2026-06-17T03:42:49.933",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "MEDIUM",
"cvssData": {
"accessComplexity": "LOW",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "NONE",
"baseScore": 5.0,
"confidentialityImpact": "PARTIAL",
"integrityImpact": "NONE",
"vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N",
"version": "2.0"
},
"exploitabilityScore": 10.0,
"impactScore": 2.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": false
}
],
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 5.3,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
"version": "3.1"
},
"exploitabilityScore": 3.9,
"impactScore": 1.4,
"source": "nvd@nist.gov",
"type": "Primary"
},
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 5.3,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
"version": "3.1"
},
"exploitabilityScore": 3.9,
"impactScore": 1.4,
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2021-26085",
"options": [
{
"exploitation": "active"
},
{
"automatable": "yes"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2025-02-07T12:29:39.323995Z",
"version": "2.0.3"
}
}
]
},
"published": "2021-08-03T00:15:08.557",
"references": [
{
"source": "security@atlassian.com",
"tags": [
"Exploit",
"Third Party Advisory",
"VDB Entry"
],
"url": "http://packetstormsecurity.com/files/164401/Atlassian-Confluence-Server-7.5.1-Arbitrary-File-Read.html"
},
{
"source": "security@atlassian.com",
"tags": [
"Issue Tracking",
"Vendor Advisory"
],
"url": "https://jira.atlassian.com/browse/CONFSERVER-67893"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Exploit",
"Third Party Advisory",
"VDB Entry"
],
"url": "http://packetstormsecurity.com/files/164401/Atlassian-Confluence-Server-7.5.1-Arbitrary-File-Read.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Issue Tracking",
"Vendor Advisory"
],
"url": "https://jira.atlassian.com/browse/CONFSERVER-67893"
},
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"tags": [
"US Government Resource"
],
"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-26085"
}
],
"sourceIdentifier": "security@atlassian.com",
"vulnStatus": "Analyzed",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-425"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
},
{
"description": [
{
"lang": "en",
"value": "CWE-425"
}
],
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"type": "Secondary"
}
]
}
},
"vulnrichment": {
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-08-03T20:19:19.799Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://jira.atlassian.com/browse/CONFSERVER-67893"
},
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "http://packetstormsecurity.com/files/164401/Atlassian-Confluence-Server-7.5.1-Arbitrary-File-Read.html"
}
],
"title": "CVE Program Container"
},
{
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 5.3,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
"version": "3.1"
}
},
{
"other": {
"content": {
"id": "CVE-2021-26085",
"options": [
{
"Exploitation": "active"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2025-02-07T12:29:39.323995Z",
"version": "2.0.3"
},
"type": "ssvc"
}
},
{
"other": {
"content": {
"dateAdded": "2022-03-28",
"reference": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-26085"
},
"type": "kev"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-425",
"description": "CWE-425 Direct Request (\u0027Forced Browsing\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2025-02-07T12:29:22.713Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"references": [
{
"tags": [
"government-resource"
],
"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-26085"
}
],
"timeline": [
{
"lang": "en",
"time": "2022-03-28T00:00:00.000Z",
"value": "CVE-2021-26085 added to CISA KEV"
}
],
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "Confluence Server",
"vendor": "Atlassian",
"versions": [
{
"lessThan": "7.4.10",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
},
{
"lessThan": "unspecified",
"status": "affected",
"version": "7.5.0",
"versionType": "custom"
},
{
"lessThan": "7.12.3",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
}
]
},
{
"product": "Confluence Data Center",
"vendor": "Atlassian",
"versions": [
{
"lessThan": "7.4.10",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
},
{
"lessThan": "unspecified",
"status": "affected",
"version": "7.5.0",
"versionType": "custom"
},
{
"lessThan": "7.12.3",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
}
]
}
],
"datePublic": "2021-07-29T00:00:00.000Z",
"descriptions": [
{
"lang": "en",
"value": "Affected versions of Atlassian Confluence Server allow remote attackers to view restricted resources via a Pre-Authorization Arbitrary File Read vulnerability in the /s/ endpoint. The affected versions are before version 7.4.10, and from version 7.5.0 before 7.12.3."
}
],
"problemTypes": [
{
"descriptions": [
{
"description": "Pre-Authorization Arbitrary File Read",
"lang": "en",
"type": "text"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2021-10-05T16:06:18.000Z",
"orgId": "f08a6ab8-ed46-4c22-8884-d911ccfe3c66",
"shortName": "atlassian"
},
"references": [
{
"tags": [
"x_refsource_MISC"
],
"url": "https://jira.atlassian.com/browse/CONFSERVER-67893"
},
{
"tags": [
"x_refsource_MISC"
],
"url": "http://packetstormsecurity.com/files/164401/Atlassian-Confluence-Server-7.5.1-Arbitrary-File-Read.html"
}
],
"x_legacyV4Record": {
"CVE_data_meta": {
"ASSIGNER": "security@atlassian.com",
"DATE_PUBLIC": "2021-07-29T00:00:00",
"ID": "CVE-2021-26085",
"STATE": "PUBLIC"
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "Confluence Server",
"version": {
"version_data": [
{
"version_affected": "\u003c",
"version_value": "7.4.10"
},
{
"version_affected": "\u003e=",
"version_value": "7.5.0"
},
{
"version_affected": "\u003c",
"version_value": "7.12.3"
}
]
}
},
{
"product_name": "Confluence Data Center",
"version": {
"version_data": [
{
"version_affected": "\u003c",
"version_value": "7.4.10"
},
{
"version_affected": "\u003e=",
"version_value": "7.5.0"
},
{
"version_affected": "\u003c",
"version_value": "7.12.3"
}
]
}
}
]
},
"vendor_name": "Atlassian"
}
]
}
},
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
"description_data": [
{
"lang": "eng",
"value": "Affected versions of Atlassian Confluence Server allow remote attackers to view restricted resources via a Pre-Authorization Arbitrary File Read vulnerability in the /s/ endpoint. The affected versions are before version 7.4.10, and from version 7.5.0 before 7.12.3."
}
]
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "Pre-Authorization Arbitrary File Read"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "https://jira.atlassian.com/browse/CONFSERVER-67893",
"refsource": "MISC",
"url": "https://jira.atlassian.com/browse/CONFSERVER-67893"
},
{
"name": "http://packetstormsecurity.com/files/164401/Atlassian-Confluence-Server-7.5.1-Arbitrary-File-Read.html",
"refsource": "MISC",
"url": "http://packetstormsecurity.com/files/164401/Atlassian-Confluence-Server-7.5.1-Arbitrary-File-Read.html"
}
]
}
}
}
},
"cveMetadata": {
"assignerOrgId": "f08a6ab8-ed46-4c22-8884-d911ccfe3c66",
"assignerShortName": "atlassian",
"cveId": "CVE-2021-26085",
"datePublished": "2021-08-03T00:00:12.199Z",
"dateReserved": "2021-01-25T00:00:00.000Z",
"dateUpdated": "2025-10-21T23:25:39.229Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
}
}
Loading…
Loading…
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Loading…
Loading…
The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
Loading…
Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
Loading…