CVE-2026-6486
classroombookings User Display Name layout.php read cross site scripting
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.
INFO
Published Date :
April 17, 2026, 1:16 p.m.
Last Modified :
April 29, 2026, 1 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 2.0 | MEDIUM | [email protected] | ||||
| CVSS 3.1 | LOW | [email protected] | ||||
| CVSS 4.0 | MEDIUM | [email protected] |
Solution
- Upgrade classroombookings to version 2.17.1.
- Apply the identified patch 69c3c9bb8a17f1ea572d8f4502bf238f0214c98a.
Public PoC/Exploit Available at Github
CVE-2026-6486 has a 1 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-6486.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-6486 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-6486
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
🔍 Proof-of-Concepts for real-world vulnerabilities
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-6486 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-6486 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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Data Remediation by [email protected]
Apr. 29, 2026
Action Type Old Value New Value Changed CVSS V4.0 Score 5.1 2 -
New CVE Received by [email protected]
Apr. 17, 2026
Action Type Old Value New Value Added 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. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CVSS V3.1 AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N Added CVSS V2 (AV:N/AC:L/Au:S/C:N/I:P/A:N) Added CWE CWE-79 Added CWE CWE-94 Added Reference https://github.com/classroombookings/classroombookings/ Added Reference https://github.com/classroombookings/classroombookings/commit/69c3c9bb8a17f1ea572d8f4502bf238f0214c98a Added Reference https://github.com/classroombookings/classroombookings/pull/83 Added Reference https://github.com/classroombookings/classroombookings/releases/tag/v2.17.1 Added Reference https://github.com/sudo-secure/security-research/blob/main/classroombookings/stored-xss/PoC.md Added Reference https://vuldb.com/submit/786154 Added Reference https://vuldb.com/vuln/358027 Added Reference https://vuldb.com/vuln/358027/cti