Search
Find a vulnerability
Search criteria
2 vulnerabilities found for ion-python by Amazon
CVE-2026-104020 (GCVE-0-2026-104020)
Vulnerability from nvd – Published: 2026-10-01 20:36 – Updated: 2026-10-01 21:07
VLAI
EPSS
VEX
Title
Uncontrolled recursion in the Ion reader in Amazon Ion Python
Summary
Uncontrolled recursion in the Ion reader in Amazon Ion Python before 0.15.0 might allow a remote unauthenticated actor to crash the application using the library, resulting in a denial of service, via a crafted, deeply nested Ion value.
To remediate this issue, users should upgrade to version 0.15.0 or later.
Severity
CWE
- CWE-674 - Uncontrolled recursion
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/amazon-ion/ion-python/releases… | patch |
| https://aws.amazon.com/security/security-bulletin… | vendor-advisory |
| https://github.com/amazon-ion/ion-python/security… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Amazon | ion-python |
Affected:
0 , < 0.15.0
(custom)
|
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "ion-python",
"vendor": "Amazon",
"versions": [
{
"lessThan": "0.15.0",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "University of Manchester"
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "\u003cp\u003eUncontrolled recursion in the Ion reader in Amazon Ion Python before 0.15.0 might allow a remote unauthenticated actor to crash the application using the library, resulting in a denial of service, via a crafted, deeply nested Ion value.\u003c/p\u003e\u003cp\u003eTo remediate this issue, users should upgrade to version 0.15.0 or later.\u003c/p\u003e"
}
],
"value": "Uncontrolled recursion in the Ion reader in Amazon Ion Python before 0.15.0 might allow a remote unauthenticated actor to crash the application using the library, resulting in a denial of service, via a crafted, deeply nested Ion value.\n\n\n\nTo remediate this issue, users should upgrade to version 0.15.0 or later."
}
],
"impacts": [
{
"capecId": "CAPEC-230",
"descriptions": [
{
"lang": "en",
"value": "CAPEC-230 Serialized Data with Nested Payloads"
}
]
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
},
{
"cvssV4_0": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "NETWORK",
"baseScore": 8.7,
"baseSeverity": "HIGH",
"exploitMaturity": "NOT_DEFINED",
"privilegesRequired": "NONE",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
"version": "4.0",
"vulnAvailabilityImpact": "HIGH",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "NONE",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-674",
"description": "CWE-674 Uncontrolled recursion",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-01T21:07:33.567Z",
"orgId": "ff89ba41-3aa1-4d27-914a-91399e9639e5",
"shortName": "AMZN"
},
"references": [
{
"tags": [
"patch"
],
"url": "https://github.com/amazon-ion/ion-python/releases/tag/v0.15.0"
},
{
"tags": [
"vendor-advisory"
],
"url": "https://aws.amazon.com/security/security-bulletins/2026-122-aws/"
},
{
"tags": [
"third-party-advisory"
],
"url": "https://github.com/amazon-ion/ion-python/security/advisories/GHSA-93q6-f8hx-vv7f"
}
],
"source": {
"discovery": "UNKNOWN"
},
"title": "Uncontrolled recursion in the Ion reader in Amazon Ion Python",
"x_generator": {
"engine": "Vulnogram 0.5.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "ff89ba41-3aa1-4d27-914a-91399e9639e5",
"assignerShortName": "AMZN",
"cveId": "CVE-2026-104020",
"datePublished": "2026-10-01T20:36:33.967Z",
"dateReserved": "2026-10-01T16:57:41.444Z",
"dateUpdated": "2026-10-01T21:07:33.567Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-104020 (GCVE-0-2026-104020)
Vulnerability from cvelistv5 – Published: 2026-10-01 20:36 – Updated: 2026-10-01 21:07
VLAI
EPSS
VEX
Title
Uncontrolled recursion in the Ion reader in Amazon Ion Python
Summary
Uncontrolled recursion in the Ion reader in Amazon Ion Python before 0.15.0 might allow a remote unauthenticated actor to crash the application using the library, resulting in a denial of service, via a crafted, deeply nested Ion value.
To remediate this issue, users should upgrade to version 0.15.0 or later.
Severity
CWE
- CWE-674 - Uncontrolled recursion
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/amazon-ion/ion-python/releases… | patch |
| https://aws.amazon.com/security/security-bulletin… | vendor-advisory |
| https://github.com/amazon-ion/ion-python/security… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Amazon | ion-python |
Affected:
0 , < 0.15.0
(custom)
|
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "ion-python",
"vendor": "Amazon",
"versions": [
{
"lessThan": "0.15.0",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "University of Manchester"
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "\u003cp\u003eUncontrolled recursion in the Ion reader in Amazon Ion Python before 0.15.0 might allow a remote unauthenticated actor to crash the application using the library, resulting in a denial of service, via a crafted, deeply nested Ion value.\u003c/p\u003e\u003cp\u003eTo remediate this issue, users should upgrade to version 0.15.0 or later.\u003c/p\u003e"
}
],
"value": "Uncontrolled recursion in the Ion reader in Amazon Ion Python before 0.15.0 might allow a remote unauthenticated actor to crash the application using the library, resulting in a denial of service, via a crafted, deeply nested Ion value.\n\n\n\nTo remediate this issue, users should upgrade to version 0.15.0 or later."
}
],
"impacts": [
{
"capecId": "CAPEC-230",
"descriptions": [
{
"lang": "en",
"value": "CAPEC-230 Serialized Data with Nested Payloads"
}
]
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
},
{
"cvssV4_0": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "NETWORK",
"baseScore": 8.7,
"baseSeverity": "HIGH",
"exploitMaturity": "NOT_DEFINED",
"privilegesRequired": "NONE",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
"version": "4.0",
"vulnAvailabilityImpact": "HIGH",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "NONE",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-674",
"description": "CWE-674 Uncontrolled recursion",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-01T21:07:33.567Z",
"orgId": "ff89ba41-3aa1-4d27-914a-91399e9639e5",
"shortName": "AMZN"
},
"references": [
{
"tags": [
"patch"
],
"url": "https://github.com/amazon-ion/ion-python/releases/tag/v0.15.0"
},
{
"tags": [
"vendor-advisory"
],
"url": "https://aws.amazon.com/security/security-bulletins/2026-122-aws/"
},
{
"tags": [
"third-party-advisory"
],
"url": "https://github.com/amazon-ion/ion-python/security/advisories/GHSA-93q6-f8hx-vv7f"
}
],
"source": {
"discovery": "UNKNOWN"
},
"title": "Uncontrolled recursion in the Ion reader in Amazon Ion Python",
"x_generator": {
"engine": "Vulnogram 0.5.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "ff89ba41-3aa1-4d27-914a-91399e9639e5",
"assignerShortName": "AMZN",
"cveId": "CVE-2026-104020",
"datePublished": "2026-10-01T20:36:33.967Z",
"dateReserved": "2026-10-01T16:57:41.444Z",
"dateUpdated": "2026-10-01T21:07:33.567Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}