What is CVE-2026-33487?

CVE-2026-33487 is a high-severity vulnerability in Russellhaering Goxmldsig, classified under Improper Verification of Cryptographic Signature. CVSS score: 7.5/10. Published 2026-03-26.

How severe is CVE-2026-33487?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Russellhaering Goxmldsig

CVE-2026-33487

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. I…

EPSS: 0.000 (7.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.

Affected products

Russellhaering Goxmldsig — versions < 1.6.0

Weakness classification (CWE)

References

https://github.com/russellhaering/goxmldsig/security/advisories/GHSA-479m-364c-43vc (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-33487?: CVE-2026-33487 is a high-severity vulnerability in Russellhaering Goxmldsig, classified under Improper Verification of Cryptographic Signature. CVSS score: 7.5/10. Published 2026-03-26.
How severe is CVE-2026-33487?: High severity. CVSS v3 base score is 7.5 out of 10.