CVE-2026-55599

phpseclib is a PHP secure communications library. From 0.1.1 until 1.0.30, 2.0.55, and 3.0.54, when an application validates an untrusted X.509 certificate with phpseclib, X509::validateSignature reads a URL out of that certificate's Authority Information Access AIA extension and connects to it...

EUVD-2023-2993

Phpseclib needs guardrails on large binaryfield integers...

Fedora 43 : php-phpseclib (2026-d1feefa819)

The remote Fedora 43 host has a package installed that is affected by a vulnerability as referenced in the FEDORA-2026-d1feefa819 advisory. Update to v2.0.52 Tenable has extracted the preceding description block directly from the Fedora security advisory. Note that Nessus has not tested for this...

CVE-2023-49316

In Math/BinaryField.php in phpseclib 3 before 3.0.34, excessively large degrees can lead to a denial of service...

Linux Distros Unpatched Vulnerability : CVE-2024-27355

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - An issue was discovered in phpseclib 1.x before 1.0.23, 2.x before 2.0.47, and 3.x before 3.0.36. When processing the ASN.1 object identifier of a certificate, ...

The vulnerability of the phpseclib cryptographic protocol library, related to incorrect input validation, allows attackers to trigger a service failure.

The vulnerability of the phpseclib cryptographic protocol library is related to insufficient checks on the data entered by users. Exploiting this vulnerability could allow a malicious actor to cause service failures...

Ubuntu: Security Advisory (USN-7404-1)

The remote host is missing an update for the SPDX-FileCopyrightText: 2025 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

PT-2024-14775 · Phpseclib +4 · Phpseclib +4

Name of the Vulnerable Software and Affected Versions: phpseclib versions 1.0.0 through 1.0.21 phpseclib versions 2.0.0 through 2.0.45 phpseclib versions 3.0.0 through 3.0.32 Description: The issue arises from the incorrect handling of certain characters in Subject Alternative Name fields within...

PT-2024-21844

Name of the Vulnerable Software and Affected Versions phpseclib versions 1.x through 1.0.22 phpseclib versions 2.x through 2.0.46 phpseclib versions 3.x through 3.0.35 Description An issue was discovered in phpseclib when processing the ASN.1 object identifier of a certificate. A sub identifier m...