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CVE-2026-46367· NVD / CVE Program· CNA VulnCheck

phpMyFAQ - Stored XSS via Utils::parseUrl() in Comment Rendering

phpMyFAQ before 4.1.2 contains a stored cross-site scripting vulnerability in Utils::parseUrl() that allows authenticated users to inject JavaScript via malformed URLs in comments. Attackers can craft URLs with unescaped quotes to inject event handlers, stealing admin session cookies and achieving full application takeover when visitors view affected FAQ pages.

HighCVSS 8.3 · v4.0—No exploit Fix available
Published
May 15, 2026
Updated
Jun 17, 2026
EPSS
0.3% · 20th percentile
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Report tools

JSON

Action score

33

Monitor

Low priority for now.

CVSS
33 / 40 · 8.3 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.3%

CISA SSVC decision

Exploitation
proof of concept
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · VulnCheck
7.6
NVD has not scored this yet; the score shown is the CNA’s.

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Noroxi analysis

No Noroxi analysis for this record yet

We don't hand-write analysis for the hundreds of thousands of vulnerabilities in the database; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.

We use this product, ask for help

Affected systems

—

Versions reported by the vendor

Affected version ranges reported by the assigning authority (VulnCheck). Independent of NVD's CPE analysis and usually ahead of it.

  • thorsten phpmyfaq

    • 4.1.2not affected
    • 4.1.1 and later · before 4.1.2affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Packagistphpmyfaq/phpmyfaqfrom 4.1.1 · before 4.1.24.1.2
Packagistthorsten/phpmyfaqfrom 4.1.1 · before 4.1.24.1.2

Same product

thorsten: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-46364phpMyFAQ - SQL Injection via User-Agent Header in BuiltinCaptcha
    38Monitor
  • CVE-2026-66398phpMyFAQ before 4.1.6 Remote Code Execution via Configuration API
    37Monitor
  • CVE-2026-45010phpMyFAQ - Unauthenticated Two-Factor Authentication Brute-Force via /admin/check Endpoint
    37Monitor
  • CVE-2026-35676phpMyFAQ - Unauthenticated Password Reset via User Password Update Endpoint
    35Monitor
  • CVE-2026-35675phpMyFAQ - Authentication Bypass via Missing Password Reset Token in /api/user/password/update
    35Monitor
  • CVE-2026-56738phpMyFAQ has SQL Injection in `StopWords::add()` — Unescaped Stop Word Insertion
    34Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
thorsten phpmyfaq4.1.2Vendor (CNA)
Packagist:phpmyfaq/phpmyfaq4.1.2Package registry (OSV)
Packagist:thorsten/phpmyfaq4.1.2Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2026-463610 days apartphpMyFAQ - Stored Cross-Site Scripting via raw Filter in search.twig
    32Monitor
  • CVE-2026-56736132 days apartphpMyFAQ has Stored XSS in Admin FAQ Editor via HTML Entity Bypass in Frontend FAQ Submission
    32Monitor
  • CVE-2026-463600 days apartphpMyFAQ - Stored XSS via Entity Decoding Depth Limit Bypass in SVG Sanitizer
    20Monitor
  • CVE-2026-463630 days apartphpMyFAQ - Stored XSS in FAQ Question/Answer via Encode-Decode Bypass
    20Monitor
  • CVE-2026-85593112 days apartphpMyFAQ before 4.1.8 Stored XSS via html_entity_decode
    20Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

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Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • A low-privileged account is enough.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
Integrity
Availability
Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
P
Scope
X

Weakness class (CWE)

CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:L/VA:N/SC:H/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

nvd-secondary

Root cause

User content is inserted into the page as HTML. The browser interprets the content as code rather than data.

The bug in code

The whole CWE-79 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

ts
commentEl.innerHTML = comment.body;

Fixed

ts
commentEl.textContent = comment.body;

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

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Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records