GHSA-mpwr-8vm7-h73f
package pkcs12: Authentication bypass in Decode functions
Summary
`Decode`, `DecodeChain`, `DecodeTrustStore`, and `ToPEM` can incorrectly accept PKCS#12 files which were encoded with the wrong password, due to a failure to reject excessively-short PBMAC1 keys. Users who decode PKCS#12 files from untrusted sources and rely on the password for authentication can be tricked into accepting malicious PKCS#12 files. Users who only decode PKCS#12 files from trusted sources are not affected. Thanks to Pavol Žáčik (Red Hat) and Alex Gaynor (Anthropic) for finding and reporting the same issue in OpenSSL ([CVE-2026-34181](https://openssl-library.org/news/vulnerabilities/#CVE-2026-34181)).
Affected packages
| Ecosystem | Package | Affected versions | Fixed versions |
|---|---|---|---|
| Go | software.sslmate.com/src/go-pkcs12 | — | 0.7.2 |
Remediation: Upgrade to 0.7.2 or later.
References
Includes data from the GitHub Advisory Database, licensed under CC-BY 4.0.