What is CVE-2026-44167?

CVE-2026-44167 is a high-severity vulnerability in Phpseclib, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2026-05-12.

How severe is CVE-2026-44167?

High severity. CVSS v3 base score is 7.5 out of 10.

Resource exhaustion in Phpseclib

CVE-2026-44167

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 vulnerabili…

Vulnerability class: DoS (Denial of Service)

EPSS: 0.000 (9.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Phpseclib — versions >= 3.0.0, < 3.0.52, >= 2.0.0, < 2.0.54, >= 0.1.1, < 1.0.29

Weakness classification (CWE)

CWE-400 — Uncontrolled Resource Consumption

References

security-advisories@github.com (x_refsource_CONFIRM)
security-advisories@github.com (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-44167?: CVE-2026-44167 is a high-severity vulnerability in Phpseclib, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2026-05-12.
How severe is CVE-2026-44167?: High severity. CVSS v3 base score is 7.5 out of 10.