Findings

CVE-2026-28281

InstantCMS is a free and open source content management system.

Published Mar 10, 2026 · updated Jun 17, 2026 · instantcms instantcms

InstantCMS is a free and open source content management system. Prior to 2.18.1, InstantCMS does not validate CSRF tokens, which allows attackers grant moderator privileges to users, execute scheduled tasks, move posts to trash, and accept friend requests on behalf of the user. This vulnerability is fixed in 2.18.1.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Mar 10, 2026 · NIST NVD

    Detected

    InstantCMS is a free and open source content management system. Prior to 2.18.1, InstantCMS does not validate CSRF tokens, which allows attackers grant moderator privileges to users, execute scheduled tasks, move posts to trash, and accept friend requests on behalf of the user. This vulnerability is fixed in 2.18.1.

  2. Jun 17, 2026 · NIST NVD

    Updated

    InstantCMS is a free and open source content management system. Prior to 2.18.1, InstantCMS does not validate CSRF tokens, which allows attackers grant moderator privileges to users, execute scheduled tasks, move posts to trash, and accept friend requests on behalf of the user. This vulnerability is fixed in 2.18.1.

Affected

  • cpe instantcms/instantcmsversion unspecified

Sources

  • CVE.orgVulnerability recordCVE-2026-28281

    Official CVE identifier

    cve.org
  • NIST NVDVulnerability recordCVE-2026-28281

    InstantCMS is a free and open source content management system. Prior to 2.18.1, InstantCMS does not validate CSRF tokens, which allows attackers grant moderator privileges to users, execute scheduled tasks, move posts to trash, and accept friend requests on behalf of the user. T

    nvd.nist.gov

References

CVE-2026-28281 · ZeroDay Findings