phpseclib is a PHP secure communications library. Prior to 1.0.29, 2.0.54, and 3.0.52, anyone loading untrusted ASN1 files (eg. X509 certificates, RSA PKCS8 private or public keys, etc). This is a bypass of CVE-2024-27355. This vulnerability is fixed in 1.0.29, 2.0.54, and 3.0.52.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade php-phpseclib3Upgrade php-phpseclibUpgrade phpseclib | May 17, 2026 | May 17, 2026 |
| Ubuntu | — | Upgrade php-phpseclib (Ubuntu Pro) | Sep 29, 2026 | Sep 28, 2026 |
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