CVE-2026-44167 Details
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.
A denial-of-service vulnerability has been identified in phpseclib, a PHP library for secure communications. This issue affects versions 1.0.0 prior to 1.0.29, 2.0.0 prior to 2.0.54, and 3.0.0 prior to 3.0.52. The vulnerability arises in the ASN.1 decoding function, where the library improperly handles untrusted ASN.1 files, such as X.509 certificates and RSA PKCS#8 keys. This mismanagement can lead to excessive resource consumption, causing a denial-of-service condition.
Users can upgrade to phpseclib versions 1.0.29, 2.0.54, or 3.0.52 to address this vulnerability.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed May 12, 2026CISA-ADP
Assessed May 14, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/phpseclib/phpseclib/commit/d53d2021bcb9f6a04d5d44ec99e6bbef219a71bc | [email protected] | Source CodeVendor |
| https://github.com/phpseclib/phpseclib/security/advisories/GHSA-3qpq-r242-jqj7 | [email protected] | AdvisoryRemedyVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-400 | Uncontrolled Resource Consumption | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| phpseclib | >= 3.0.0, <= 3.0.51 (semver) >= 2.0.0, <= 2.0.53 (semver) >= 0.1.1, <= 1.0.28 (semver) |
CPE
Remediation
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Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| May 12, 2026 | New CVE Received | [email protected] |