oras-project oras up to 1.3.2 Recursive Referrer Traversal recursion

Summaryinfo

A vulnerability has been found in oras-project oras up to 1.3.2 and classified as problematic. This affects an unknown part of the component Recursive Referrer Traversal. Performing a manipulation results in recursion. This vulnerability is known as CVE-2026-55588. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability, which was classified as problematic, was found in oras-project oras up to 1.3.2. This affects an unknown part of the component Recursive Referrer Traversal. The manipulation with an unknown input leads to a recursion vulnerability. CWE is classifying the issue as CWE-674. The product does not properly control the amount of recursion that takes place, consuming excessive resources, such as allocated memory or the program stack. This is going to have an impact on availability. The summary by CVE is:

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.

The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2026-55588 since 06/17/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1499 for this issue.

Upgrading to version 1.3.3 eliminates this vulnerability.

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Productinfo

Type

• Project Management Software

Vendor

• oras-project

Name

• oras

Version

• 1.3.0
• 1.3.1
• 1.3.2

Website

• Product: https://github.com/oras-project/oras/

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Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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