{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-55588", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-06-16T23:18:03.169Z", "datePublished": "2026-08-25T20:32:18.677Z", "dateUpdated": "2026-08-25T20:32:18.677Z"}, "containers": {"cna": {"title": "ORAS CLI: Cyclic Referrer Graph Can Cause Unbounded Recursion and Resource Consumption", "problemTypes": [{"descriptions": [{"cweId": "CWE-400", "lang": "en", "description": "CWE-400: Uncontrolled Resource Consumption", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-674", "lang": "en", "description": "CWE-674: Uncontrolled Recursion", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-835", "lang": "en", "description": "CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop')", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H", "version": "3.1"}}], "references": [{"name": "https://github.com/oras-project/oras/security/advisories/GHSA-298f-872v-2rcx", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/oras-project/oras/security/advisories/GHSA-298f-872v-2rcx"}, {"name": "https://github.com/oras-project/oras/commit/440eb65d07a0631f131944d28e7c29d562ec17f3", "tags": ["x_refsource_MISC"], "url": "https://github.com/oras-project/oras/commit/440eb65d07a0631f131944d28e7c29d562ec17f3"}], "affected": [{"vendor": "oras-project", "product": "oras", "versions": [{"version": "< 1.3.3", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-08-25T20:32:18.677Z"}, "descriptions": [{"lang": "en", "value": "ORAS (OCI Registry As Storage) is a CLI and library for managing artifacts in OCI registries. In ORAS CLI versions up to and including 1.3.2, the recursive referrer traversal does not track visited descriptors, so a malicious OCI registry that returns a cyclic referrer graph causes unbounded recursion and memory growth. This affects oras discover, whose recursive traversal is enabled by default because the --depth option defaults to 0 (unlimited), as well as the recursive referrer counting used by the oras backup and oras restore workflows. A cyclic graph can be as simple as A referring to B and B referring back to A. A malicious registry can use this to cause a client-side denial of service, exhausting CPU and memory and hanging automation or CI/CD pipelines that run ORAS against untrusted registry metadata. The vulnerability does not extend to code execution, artifact substitution, or integrity bypass. This issue has been fixed in version 1.3.3."}], "source": {"advisory": "GHSA-298f-872v-2rcx", "discovery": "UNKNOWN"}}}}

{}

{"affected": [{"affectedData": [{"product": "oras", "vendor": "oras-project", "versions": [{"status": "affected", "version": "< 1.3.3"}]}], "source": "[email protected]"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "ORAS (OCI Registry As Storage) is a CLI and library for managing artifacts in OCI registries. In ORAS CLI versions up to and including 1.3.2, the recursive referrer traversal does not track visited descriptors, so a malicious OCI registry that returns a cyclic referrer graph causes unbounded recursion and memory growth. This affects oras discover, whose recursive traversal is enabled by default because the --depth option defaults to 0 (unlimited), as well as the recursive referrer counting used by the oras backup and oras restore workflows. A cyclic graph can be as simple as A referring to B and B referring back to A. A malicious registry can use this to cause a client-side denial of service, exhausting CPU and memory and hanging automation or CI/CD pipelines that run ORAS against untrusted registry metadata. The vulnerability does not extend to code execution, artifact substitution, or integrity bypass. This issue has been fixed in version 1.3.3."}], "id": "CVE-2026-55588", "lastModified": "2026-08-25T21:17:02.350", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 3.6, "source": "[email protected]", "type": "Secondary"}]}, "published": "2026-08-25T21:17:02.350", "references": [{"source": "[email protected]", "url": "https://github.com/oras-project/oras/commit/440eb65d07a0631f131944d28e7c29d562ec17f3"}, {"source": "[email protected]", "url": "https://github.com/oras-project/oras/security/advisories/GHSA-298f-872v-2rcx"}], "sourceIdentifier": "[email protected]", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-400"}, {"lang": "en", "value": "CWE-674"}, {"lang": "en", "value": "CWE-835"}], "source": "[email protected]", "type": "Primary"}]}

{}

{}