goxmlsig provides XML Digital Signatures implemented in Go. Prior to version 1.6.0, the `validateSignature` function in `validate.go` goes through the references in the `SignedInfo` block to find one that matches the signed element's ID. In Go versions before 1.22, or when `go.mod` uses an older version, there is a loop variable capture issue. The code takes the address of the loop variable `_ref` instead of its value. As a result, if more than one reference matches the ID or if the loop logic is incorrect, the `ref` pointer will always end up pointing to the last element in the `SignedInfo.References` slice after the loop. goxmlsig version 1.6.0 contains a patch.
Advisories
Source ID Title
Github GHSA Github GHSA GHSA-479m-364c-43vc validateSignature Loop Variable Capture Signature Bypass in goxmldsig
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Thu, 26 Mar 2026 17:45:00 +0000

Type Values Removed Values Added
Description goxmlsig provides XML Digital Signatures implemented in Go. Prior to version 1.6.0, the `validateSignature` function in `validate.go` goes through the references in the `SignedInfo` block to find one that matches the signed element's ID. In Go versions before 1.22, or when `go.mod` uses an older version, there is a loop variable capture issue. The code takes the address of the loop variable `_ref` instead of its value. As a result, if more than one reference matches the ID or if the loop logic is incorrect, the `ref` pointer will always end up pointing to the last element in the `SignedInfo.References` slice after the loop. goxmlsig version 1.6.0 contains a patch.
Title goxmldsig has validateSignature Loop Variable Capture Signature Bypass
Weaknesses CWE-347
CWE-682
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-03-26T17:17:51.101Z

Reserved: 2026-03-20T16:16:48.971Z

Link: CVE-2026-33487

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-03-26T18:16:30.070

Modified: 2026-03-26T18:16:30.070

Link: CVE-2026-33487

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses