{"apiVersion":"1.0","identifier":"CVE-2026-55588","description":"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.","publishedAt":"2026-08-25T21:17:02","lastModifiedAt":"2026-08-27T17:18:49","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-55588","cvssScore":6.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","epssProbability":0.00302,"riskScore":0.67,"affectedProduct":"ORAS","affectedVersions":"<=1.3.2","vulnerabilityType":"Library","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-55588","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-55588","en":"https://www.redsauce.net/en/cves/CVE-2026-55588","fr":"https://www.redsauce.net/fr/cves/CVE-2026-55588","pt":"https://www.redsauce.net/pt/cves/CVE-2026-55588","de":"https://www.redsauce.net/de/cves/CVE-2026-55588","sk":"https://www.redsauce.net/sk/cves/CVE-2026-55588","el":"https://www.redsauce.net/el/cves/CVE-2026-55588"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-55588"}}