Missing server signature validation in OctoberCMS

Description

Octobercms is a self-hosted CMS platform based on the Laravel PHP Framework. Affected versions of OctoberCMS did not validate gateway server signatures. As a result non-authoritative gateway servers may be used to exfiltrate user private keys. Users are advised to upgrade their installations to build 474 or v1.1.10. The only known workaround is to manually apply the patch (e3b455ad587282f0fbcb7763c6d9c3d000ca1e6a) which adds server signature validation.

Scores

EPSS (exploitation in 30 days)

0.64% · top 49% of all CVEs (7 Nov 2026)

CISA SSVC

Exploitation: none · Automatable: no · Technical impact: partial

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.8.

Weakness

• CWE-347: Improper Verification of Cryptographic Signature (opens in a new tab)All about CWE-347 and its CVEs

Affected products

• octobercms · october

  • affected >= 1.1.0, < 1.1.11
  • affected < 1.0.475

Affected packages

From reviewed advisories of the GitHub Advisory Database.

• Packagistoctober/systemGHSA-53m6-44rc-h2q5 (opens in a new tab)

References (2)

• https://github.com/octobercms/october/security/advisories/GHSA-53m6-44rc-h2q5 (opens in a new tab)x_refsource_CONFIRMx_transferred
• https://github.com/octobercms/october/commit/e3b455ad587282f0fbcb7763c6d9c3d000ca1e6a (opens in a new tab)x_refsource_MISCx_transferred

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisory GHSA-53m6-44rc-h2q5 (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2022-23655](https://trackcve.app/badge/CVE-2022-23655.svg)](https://trackcve.app/cve/CVE-2022-23655)

Record last updated 23 Apr 2025, 19:00 UTC.