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SCA: security update for github.com/sigstore/gitsign (GHSA-7rmh-48mx-2vwc)

medium Tenable Cloud Security Plugin ID 441592

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - Gitsign is a keyless Sigstore to signing tool for Git commits with your a GitHub / OIDC identity. Prior to
 0.16.0, gitsign verify and gitsign verify-tag re-encode commit/tag objects through go-git's
 EncodeWithoutSignature before checking the signature, instead of verifying against the raw git object
 bytes. For malformed objects with duplicate tree headers, git-core and go-git parse different trees: git-
 core uses the first, go-git uses the second. A signature crafted over the go-git-normalized form (second
 tree) passes gitsign verify while git-core resolves the commit to a completely different tree. This breaks
 the invariant that a verified signature, the commit semantics git-core presents to users, and the object
 hash logged in Rekor all refer to the same content. This vulnerability is fixed in 0.16.0.
 (CVE-2026-44309)

Solution

Update the github.com/sigstore/gitsign library and its related packages to version 0.16.0 or later.

See Also

https://github.com/advisories/GHSA-7rmh-48mx-2vwc

Plugin Details

Severity: Medium

ID: 441592

Version: Revision 1.5

Type: Local

Family: SCA Checks

Published: 5/9/2026

Updated: 6/10/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.69

Vendor

Vendor Severity: Medium

CVSS v2

Risk Factor: Medium

Base Score: 5.4

Temporal Score: 4

Vector: CVSS2#AV:N/AC:H/Au:N/C:N/I:C/A:N

CVSS Score Source: CVE-2026-44309

CVSS v3

Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.6

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 5/8/2026

Vulnerability Publication Date: 5/8/2026

Reference Information

CVE: CVE-2026-44309