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  5. CVE-2024-27355

CVE-2024-27355: phpseclib guardrails needed on OID length

May 8, 2026

Any application using that loads untrusted ASN1 files (eg. X509 certificates, RSA PKCS8 private or public keys, etc).

References

  • gist.github.com/katzj/ee72f3c2a00590812b2ea3c0c8890e0b
  • github.com/FriendsOfPHP/security-advisories/blob/master/phpseclib/phpseclib/CVE-2024-27355.yaml
  • github.com/advisories/GHSA-f2qx-66wf-wvvx
  • github.com/phpseclib/phpseclib/blob/978d081fe50ff92879c50ff143c62a143edb0117/phpseclib/File/ASN1.php
  • github.com/phpseclib/phpseclib/commit/e32531001b4d62c66c3d824ccef54ffad835eb59
  • github.com/phpseclib/phpseclib/security/advisories/GHSA-f2qx-66wf-wvvx
  • lists.debian.org/debian-lts-announce/2024/03/msg00002.html
  • lists.debian.org/debian-lts-announce/2024/03/msg00003.html
  • nvd.nist.gov/vuln/detail/CVE-2024-27355

Code Behaviors & Features

Detect and mitigate CVE-2024-27355 with GitLab Dependency Scanning

Secure your software supply chain by verifying that all open source dependencies used in your projects contain no disclosed vulnerabilities. Learn more about Dependency Scanning →

Affected versions

All versions starting from 0.1.1 before 1.0.23, all versions starting from 2.0.0 before 2.0.47, all versions starting from 3.0.0 before 3.0.36

Fixed versions

  • 1.0.23
  • 2.0.47
  • 3.0.36

Solution

Upgrade to versions 1.0.23, 2.0.47, 3.0.36 or above.

Impact 7.5 HIGH

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

Learn more about CVSS

Weakness

  • CWE-400: Uncontrolled Resource Consumption

Source file

packagist/phpseclib/phpseclib/CVE-2024-27355.yml

Spotted a mistake? Edit the file on GitLab.

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