UBUNTU-CVE-2026-44310

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Source

https://ubuntu.com/security/CVE-2026-44310

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-44310.json

JSON Data

https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-44310

Upstream

CVE-2026-44310

Published

2026-05-15T17:16:00Z

Modified

2026-05-20T22:02:56.304016379Z

Severity

5.4 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L CVSS Calculator
Ubuntu - medium

Summary

[none]

Details

Gitsign is a keyless Sigstore to signing tool for Git commits with your a GitHub / OIDC identity. From 0.4.0 to before 0.15.0, CertVerifier.Verify() in pkg/git/verifier.go unconditionally dereferences certs[0] after sd.GetCertificates() without checking the slice length. A CMS/PKCS7 signed message with an empty certificate set is a structurally valid DER payload; GetCertificates() returns an empty slice with no error, causing an immediate index-out-of-range panic. On the gitsign --verify code path (the GPG-compatible mode invoked by git verify-commit), the panic is silently recovered by internal/io/streams.go's Wrap() function, which returns nil instead of an error. main.go then exits with code 0, causing exit-code-only verification callers to interpret the failed verification as success. This vulnerability is fixed in 0.15.0.

References

Affected packages

Ubuntu:25.10 / gitsign

Package

Name: gitsign
Purl: pkg:deb/ubuntu/gitsign?arch=source&distro=questing

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

0.*

0.12.0-4

0.13.0-1

0.13.0-2

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "gitsign",
            "binary_version": "0.13.0-2"
        },
        {
            "binary_name": "golang-github-sigstore-gitsign-dev",
            "binary_version": "0.13.0-2"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-44310.json"

Ubuntu:26.04:LTS / gitsign