CVE-2026-6486

Description

A vulnerability was detected in classroombookings up to 2.17.0. This impacts the function read of the file crbs-core/application/views/layout.php of the component User Display Name Handler. The manipulation of the argument displayname results in cross site scripting. The attack can be executed remotely. The exploit is now public and may be used. Upgrading to version 2.17.1 will fix this issue. The patch is identified as 69c3c9bb8a17f1ea572d8f4502bf238f0214c98a. It is suggested to upgrade the affected component. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.

Predictions

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No vendor mitigations ingested yet for this CVE. The mitigation-content worker queues fetches as references arrive — check back in a few minutes, or see the references list below.

References

• https://github.com/classroombookings/classroombookings/
• https://github.com/classroombookings/classroombookings/commit/69c3c9bb8a17f1ea572d8f4502bf238f0214c98a
• https://github.com/classroombookings/classroombookings/pull/83
• https://github.com/classroombookings/classroombookings/releases/tag/v2.17.1
• https://github.com/sudo-secure/security-research/blob/main/classroombookings/stored-xss/PoC.md
• https://vuldb.com/submit/786154
• https://vuldb.com/vuln/358027
• https://vuldb.com/vuln/358027/cti

CWEs

CWE-79 CWE-94