CVE-2026-44167

HIGH

phpseclib: CVE-2024-27355 mitigation bypass — OID amplification DoS in ASN1::decodeOID()

Title source: cna

Description

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.

References (2)

Core 2

Core References

X_Refsource_Confirm x_refsource_confirm

https://github.com/phpseclib/phpseclib/security/advisories/GHSA-3qpq-r242-jqj7

X_Refsource_Misc x_refsource_misc

https://github.com/phpseclib/phpseclib/commit/d53d2021bcb9f6a04d5d44ec99e6bbef219a71bc

View Writeup ZIP pw:eip

Scores

CVSS v3 7.5

EPSS 0.0021

EPSS Percentile 11.1%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment

Exploitation none

Automatable yes

Technical Impact partial

Details

CWE

CWE-400

Status published

Products (6)

phpseclib/phpseclib 0.1.1 - 1.0.29Packagist

phpseclib/phpseclib 2.0.0 - 2.0.54Packagist

phpseclib/phpseclib 3.0.0 - 3.0.52Packagist

phpseclib/phpseclib >= 0.1.1, < 1.0.29

phpseclib/phpseclib >= 2.0.0, < 2.0.54

phpseclib/phpseclib >= 3.0.0, < 3.0.52

Published May 12, 2026

Tracked Since May 12, 2026