Memory Growth Vulnerability in ORAS CLI by Oracle
CVE-2026-55588

6.5MEDIUM

Key Information:

Vendor

Oras-project

Status
Oras
Vendor
CVE Published:
25 August 2026

What is CVE-2026-55588?

The ORAS CLI, a tool for managing artifacts in OCI registries, is vulnerable due to a flaw in its recursive referrer traversal mechanism. Versions up to and including 1.3.2 do not properly track visited descriptors, creating a risk of unbounded recursion when interacting with malicious OCI registries that present cyclic referrer graphs. This can lead to excessive CPU and memory usage, potentially hanging automation or CI/CD workflows that rely on the 'oras discover,' 'oras backup,' and 'oras restore' operations. Users are advised to update to version 1.3.3 or higher to mitigate this risk.

Affected Version(s)

oras < 1.3.3

References

https://github.com/oras-project/oras/security/advisories/...
x_refsource_CONFIRM
https://github.com/oras-project/oras/commit/440eb65d07a06...
x_refsource_MISC

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.