CVE-2026-46367Public exploitNetwork attack vector

Stored XSS via unescaped parseUrl link attributes

Published May 15, 2026 · Updated May 15, 2026

Stored XSS in phpMyFAQ before 4.1.2 allows remote authenticated users to execute JavaScript through malformed URLs in stored comments. Utils::parseUrl() treats quotes as URL characters, interpolates the URL into an href without HTML escaping, and renders the stored result with Twig auto-escaping disabled. Exploitation requires an account, enabled comment editor, allowed comments, and a visitor who hovers over the link; an administrator victim's session cookie enables application takeover.

CVSS severity8.3
High
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in phpMyFAQ before 4.1.2 allows remote authenticated users to execute JavaScript through malformed URLs in stored comments. Utils::parseUrl() treats quotes as URL characters, interpolates the URL into an href without HTML escaping, and renders the stored result with Twig auto-escaping disabled. Exploitation requires an account, enabled comment editor, allowed comments, and a visitor who hovers over the link; an administrator victim's session cookie enables application takeover.

The record

CVE
CVE-2026-46367
Published
May 15, 2026
Updated
May 15, 2026
Vendor
Thorsten Rinne
Product
phpMyFAQ
Classifications
CWE-116, CWE-79, T1539
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 15, 2026CVE publishedPublication date reported by the CVE source.
  2. May 15, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=4.1.1 <4.1.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Thorsten Rinne · phpMyFAQversion=4.1.1 <4.1.2

Published CVSS scores

8.3VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:L/VA:N/SC:H/SI:L/SA:N
7.6GitHub Security AdvisoryCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-116Improper Encoding or Escaping of Output
CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1539Steal Web Session Cookie

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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