PatchTheCVECVE-2026-33487: goxmlsig provides XML Digital Signatures implemented in Go
CVE-2026-33487 is a high-severity flaw (CVSS 7.5) affecting goxmldsig. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
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 o
Why this priority
- High severity
- Public exploit reference
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Last updated 2026-09-09 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2026-33487?
goxmldsig: upgrade to 1.6.0. Exact commands for each OS are on this page.
Is CVE-2026-33487 being exploited?
CVE-2026-33487 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2026-33487 affect?
CVE-2026-33487 affects goxmldsig. Severity is high (CVSS 7.5). 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
How urgent is CVE-2026-33487?
Priority 43/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action