Quick answers
- Is CVE-2026-57518 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-57518 being exploited in the wild.
- How severe is CVE-2026-57518?
- High severity, with a CVSS score of 8.8, published 26 June 2026.
- Which products and versions are affected?
- Pagekit <= 1.0.18.
- Is there a fix for CVE-2026-57518?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-57518 attacked?
- It is attacked over the network, in a network appliance.
- Am I affected by CVE-2026-57518?
- Check whether you run Pagekit at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
A privilege escalation vulnerability exists in Pagekit CMS 1.0.18 due to missing authorization checks in the `UserApiController::saveAction()` method. While the application explicitly blocks non-administrators from assigning the hard-coded 'Administrator' role (ID 3), it fails to validate the assignment of custom roles. An attacker with 'user: manage users' permissions can send a crafted POST request to `/api/user/{id}` to assign themselves a custom role containing the 'system: manage packages' permission. Once elevated, the attacker can use the admin package installer to upload and execute a malicious PHP package, resulting in full remote code execution (RCE). The project is currently archived and unmaintained.
Affected products
- Pagekit Pagekit CMS <= 1.0.18
Timeline
- 2026-06-26: disclosed: Vulnerability disclosed by Saidakbarxon Maqsudxonov
- 2026-06-26: advisory: CVE-2026-57518 published