CVE-2026-31830

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Source

https://cve.org/CVERecord?id=CVE-2026-31830

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-31830.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-31830

Aliases

GHSA-mhg6-2q2v-9h2c

Published

2026-03-10T21:46:02.547Z

Modified

2026-03-13T11:36:32.650532Z

Severity

7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N CVSS Calculator

Summary

sigstore-ruby verifier returns success for DSSE bundles with mismatched in-toto subject digest

Details

sigstore-ruby is a pure Ruby implementation of the sigstore verify command from the sigstore/cosign project. Prior to 0.2.3, Sigstore::Verifier#verify does not propagate the VerificationFailure returned by verifyintoto when the artifact digest does not match the digest in the in-toto attestation subject. As a result, verification of DSSE bundles containing in-toto statements returns VerificationSuccess regardless of whether the artifact matches the attested subject. This vulnerability is fixed in 0.2.3.

Database specific

{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31830.json",
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-252"
    ]
}

References

Affected packages

Git / github.com/sigstore/sigstore-ruby

Affected ranges

Type

GIT

Repo

https://github.com/sigstore/sigstore-ruby

Events

Introduced

Fixed

26ffbe0c1d6e16614fb9cd8b2ed40ab47d57d421

Database specific

{
    "versions": [
        {
            "introduced": "0"
        },
        {
            "fixed": "0.2.3"
        }
    ]
}

Affected versions

v0.*

v0.1.0

v0.1.1

v0.2.0

v0.2.1

v0.2.2

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-31830.json"