CVE-2026-41466

MEDIUM EPSS 8.1%
Published Apr 27, 20262mo ago · Modified Jun 17, 20261w ago
5.1 CVSS 4.0
Medium
Find Similar
Published Apr 27, 2026 2mo ago
Last Modified Jun 17, 2026 1w ago

Description

ProjeQtor versions 7.0 through 12.4.3 contain a stored cross-site scripting vulnerability in the checkValidHtmlText() function within Security.php that fails to properly sanitize user input by only detecting specific patterns while returning unsanitized strings without output encoding. Attackers can inject malicious payloads that bypass the filter using alternative syntax such as img tags with event handlers, which are stored and executed in the browsers of users viewing the affected content.

CVSS Details

Base Score
5.1
Exploitability
—
Impact
—
Vector string
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/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
Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction P
Scope X

Threat Intelligence

EPSS Exploit Probability
8.1% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-79 Cross-site Scripting Injection

References 4

  • damiri.fr https://damiri.fr/en/cves/CVE-2026-41466
  • gryfman.fr https://gryfman.fr/cves/CVE-2026-41466
  • projeqtor.com https://www.projeqtor.com
  • vulncheck.com https://www.vulncheck.com/advisories/projeqtor-stored-xss-via-checkvalidhtmltext

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.