CVE WatchJul 20, 2026

CVE-2026-33487

goxmlsig provides XML Digital Signatures implemented in Go. Prior to version 1.6.0, the `validateSignature` function in `validate.go` goes t

CVSS

7.5

High

EPSS

0.3%

p22

KEV

—

Exploit Today

0-100

Published: Mar 26, 2026 · Last modified: Jul 20, 2026 · CWE-347 · CWE-682

EPSS · 30d

0.3%EPSS · 30 days0.3%

2026-06-302026-07-26

Technical 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.

Official references

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