CVE-2021-22175 (GCVE-0-2021-22175)
Vulnerability from cvelistv5 – Published: 2021-06-11 15:30 – Updated: 2026-10-01 18:12Summary
When requests to the internal network for webhooks are enabled, a server-side request forgery vulnerability in GitLab affecting all versions starting from 10.5 was possible to exploit for an unauthenticated attacker even on a GitLab instance where registration is disabled
Severity
6.8 (Medium)
SSVC
Exploitation: active
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-02-19 04:55 UTC
CWE
- Server-side request forgery (ssrf) in GitLab
- CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://gitlab.com/gitlab-org/gitlab/-/issues/294178 | x_refsource_MISC |
| https://hackerone.com/reports/1059596 | x_refsource_MISC |
| https://gitlab.com/gitlab-org/cves/-/blob/master/… | x_refsource_CONFIRM |
| https://www.cisa.gov/known-exploited-vulnerabilit… | government-resource |
Impacted products
CISA
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 1df2851b-49e7-47ec-9811-e59b87c7679c
Exploited: Yes
Timestamps
First Seen: 2026-02-18
Asserted: 2026-02-18
Scope
Notes: GitLab Server-Side Request Forgery (SSRF) Vulnerability | Affected: GitLab / GitLab | Description: GitLab contains a server-side request forgery (SSRF) vulnerability when requests to the internal network for webhooks are enabled. | Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. | Due date: 2026-03-11 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-22175.json ; https://nvd.nist.gov/vuln/detail/CVE-2021-22175
Evidence
Type: Vendor Report
Signal: Successful Exploitation
Confidence: 80%
Source: cisa-kev
Details
| Cwes | CWE-918 |
|---|---|
| Feed | CISA Known Exploited Vulnerabilities Catalog |
| Product | GitLab |
| Due Date | 2026-03-11 |
| Date Added | 2026-02-18 |
| Vendorproject | GitLab |
| Vulnerabilityname | GitLab Server-Side Request Forgery (SSRF) Vulnerability |
| Knownransomwarecampaignuse | Unknown |
References
Created: 2026-10-02 08:09 CEST
| Updated: 2026-10-02 08:09 CEST
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 8b14aee7-283f-49fa-b3a8-a8017978ea7d
Exploited: Yes
Timestamps
First Seen: 2026-06-01
Asserted: 2026-06-01
Scope
Notes: When requests to the internal network for webhooks are enabled, a server-side request forgery vulnerability in GitLab affecting all versions... | Affected: GitLab / GitLab | CVSS: 6.8 (MEDIUM) | EPSS: 0.53372 | Used in malware: unknown | Listed 1 day ahead of CISA KEV | Not yet in CISA KEV: False
Evidence
Type: Public Report
Signal: Successful Exploitation
Confidence: 70%
Source: previdian
Details
| Feed | Previdian (previdian.com) |
|---|---|
| Title | When requests to the internal network for webhooks are enabled, a server-side request forgery vulnerability in GitLab affecting all versions... |
| Cve Id | CVE-2021-22175 |
| Vendor | GitLab |
| Ghsa Id | None |
| Product | GitLab |
| Added Date | 2026-06-01T10:59:30.940Z |
| Cvss Score | 6.8 |
| Epss Score | 0.53372 |
| Previous Ids | |
| Cvss Severity | MEDIUM |
| Virtual Patch | False |
| Cvss Estimated | False |
| Epss Percentile | 0.98957 |
| Used In Malware | unknown |
| Vulnerability Id | CVE-2021-22175 |
| Ahead Of Cisa Kev |
|
| Not Yet In Cisa Kev | False |
References
Created: 2026-10-02 09:09 CEST
| Updated: 2026-10-02 09:09 CEST
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"descriptions": [
{
"lang": "en",
"value": "When requests to the internal network for webhooks are enabled, a server-side request forgery vulnerability in GitLab affecting all versions starting from 10.5 was possible to exploit for an unauthenticated attacker even on a GitLab instance where registration is disabled"
}
],
"metrics": [
{
"cvssV3_1": {
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"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 6.8,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
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"scope": "CHANGED",
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"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N",
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}
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],
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"descriptions": [
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"description": "Server-side request forgery (ssrf) in GitLab",
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],
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"orgId": "ceab7361-8a18-47b1-92ba-4d7d25f6715a",
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},
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],
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},
{
"tags": [
"x_refsource_MISC"
],
"url": "https://hackerone.com/reports/1059596"
},
{
"tags": [
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],
"url": "https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-22175.json"
}
],
"x_legacyV4Record": {
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"STATE": "PUBLIC"
},
"affects": {
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"version_value": "\u003e=10.5, \u003c13.6.7"
},
{
"version_value": "\u003e=13.7, \u003c13.7.7"
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},
"credit": [
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"lang": "eng",
"value": "Thanks [@myster](https://hackerone.com/myster?type=user) for reporting this vulnerability through our HackerOne bug bounty program"
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}
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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.
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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.
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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.
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