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CVE-2026-6486

classroombookings User Display Name layout.php read cross site scripting

LOW
3.5
CVSS Score
Published: April 17, 2026 at 12:15 PM UTC
Updated: June 17, 2026 at 11:00 AM UTC
1 product affected across 1 vendorClassroombookings

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Severity
LOW3.5
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

References (8)

VDB EntryTechnical Description
Source: cverecord
https://vuldb.com/vuln/358027
SignaturePermissions Required
Source: cverecord
https://vuldb.com/vuln/358027/cti
Third Party Advisory
Source: cverecord
https://vuldb.com/submit/786154
Exploit
Source: cverecord
https://github.com/sudo-secure/security-research/blob/main/classroombookings/stored-xss/PoC.md
Issue TrackingPatch
Source: cverecord
https://github.com/classroombookings/classroombookings/pull/83
Patch
Source: cverecord
https://github.com/classroombookings/classroombookings/commit/69c3c9bb8a17f1ea572d8f4502bf238f0214c98a
Patch
Source: cverecord
https://github.com/classroombookings/classroombookings/releases/tag/v2.17.1
Product
Source: cverecord
https://github.com/classroombookings/classroombookings/

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

3.5LOWVulDB
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-79CWE-94

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