What’s Vulnerable › Vulnerabilities

CVE-2023-25656: notation-go has excessive memory allocation on verification

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-02-20 · updated 2026-06-17
• Weakness: CWE-770

Description

notation-go is a collection of libraries for supporting Notation sign, verify, push, and pull of oci artifacts. Prior to version 1.0.0-rc.3, notation-go users will find their application using excessive memory when verifying signatures. The application will be killed, and thus availability is impacted. The problem has been patched in the release v1.0.0-rc.3. Some workarounds are available. Users can review their own trust policy file and check if the identity string contains `=#`. Meanwhile, users should only put trusted certificates in their trust stores referenced by their own trust policy files, and make sure the `authenticity` validation is set to `enforce`.

Affected products

• notaryproject notation-go: 0.7.0-alpha1, 0.8.0-alpha1, 0.9.0-alpha1

References

• https://github.com/notaryproject/notation-go/releases/tag/v1.0.0-rc.3
• https://github.com/notaryproject/notation-go/security/advisories/GHSA-87x9-7grx-m28v
• https://github.com/notaryproject/notation-go/releases/tag/v1.0.0-rc.3
• https://github.com/notaryproject/notation-go/security/advisories/GHSA-87x9-7grx-m28v

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