CVE-2026-56736
📛 CVE Title
phpMyFAQ has Stored XSS in Admin FAQ Editor via HTML Entity Bypass in Frontend FAQ Submission
Description
phpMyFAQ is an open source FAQ web application. A stored cross-site scripting (XSS) vulnerability in versions prior to 4.2.0-alpha allows any unauthenticated user (or low-privileged registered user) to inject arbitrary JavaScript that executes in an administrator's browser when they review or edit a user-submitted FAQ entry. This leads to admin account takeover via session theft. The vulnerability exists because `html_entity_decode()` converts HTML entities into executable HTML after `strip_tags()` has already passed them through, and the admin template renders the content with Twig's `|raw` filter without any output sanitization. Version 4.2.0-alpha fixes the issue.
Overview
- State
- PUBLISHED
- Assigner (CNA)
- GitHub_M
- CVSS severity
- HIGH
- CVSS score
- 8.2 / 10
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N- Effective score
- 8.2 / 10 HIGH source: CNA overview
- CWE(s)
-
CWE-79 - Reserved
- 2026-06-22
- Published
- 2026-09-24 14:21 UTC
- Last updated
- 2026-09-24 14:52 UTC
- Source
- https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/56xxx/CVE-2026-56736.json
- Linked Threat
- CVE-2026-56736 — phpMyFAQ has Stored XSS in Admin FAQ Editor via HTML Entity Bypass in Frontend FAQ Submission
NVD / KEV / EPSS data refreshed 2026-09-25 04:38 UTC. Re-run the 🛰 Backfill from NVD button above to refresh.
European Union Vulnerability Database ENISA EUVD
ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.
- EUVD ID
-
EUVD-2026-86010 - Assigner
- GitHub_M
- Published
- Sep 24, 2026, 2:21:17 PM
- Updated
- Sep 24, 2026, 2:52:17 PM
- EUVD base score (CVSS 3.1)
-
8.2 / 10
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N - EUVD-reported EPSS
- 0.0000
- Vendors
- thorsten
- Products
-
phpMyFAQ (< 4.2.0-alpha)
- Aliases
-
GHSA-pgwp-vc7q-cvj3
ENISA description: phpMyFAQ is an open source FAQ web application. A stored cross-site scripting (XSS) vulnerability in versions prior to 4.2.0-alpha allows any unauthenticated user (or low-privileged registered user) to inject arbitrary JavaScript that executes in an administrator's browser when they review or edit a user-submitted FAQ entry. This leads to admin account takeover via session theft. The vulnerability exists because `html_entity_decode()` converts HTML entities into executable HTML after `strip_tags()` has already passed them through, and the admin template renders the content with Twig's `|raw` filter without any output sanitization. Version 4.2.0-alpha fixes the issue.
EUVD references (1)
Affected products (1)
| Vendor | Product | Versions | Platforms |
|---|---|---|---|
| thorsten | phpMyFAQ |
< 4.2.0-alpha (affected)
|
— |
Vendor references (1)
References embedded in the original CVE record by the assigning CNA.
- https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-pgwp-vc7q-cvj3 x_refsource_CONFIRM
Web references (0)
DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.
No web references attached yet.
Remediations (10)
Remediations are stored against the linked Threat row; the list below is deduplicated across both pages.
-
web:knowledge.broadcom.com
VMware Telco Cloud response to VMSA- 2026 -0006 ( CVE - 2026 -59309, CVE - 2026 -59310, CVE - 2026 -47876, CVE - 2026 -41703, CVE - 2026 -41709) Patch Availability for VMware Telco Cloud Platform / Telco Cloud Infrastructure
2026-09-25 10:11 UTC -
web:sec.cloudapps.cisco.com
On September 16, 2026 , the Cisco Product Security Incident Response Team (PSIRT) published the advisories that are listed in the following tables. To remediate these vulnerabilities, Cisco strongly recommends that customers upgrade to the fixed software that is indicated in the advisories. For more information about changes in Cisco PSIRT vulnerability disclosure, see Strengthening the ...
2026-09-25 10:11 UTC -
web:support.microsoft.com
Be aware that the update in the Microsoft Download Center applies to the Microsoft Installer (.msi)-based edition of Office 2016. It doesn't apply to the Office 2016 Click-to-Run editions, such as Microsoft Office 365 Home. (See What version of Office am I using?) How to get and install the update Method 1: Microsoft Update This update is available from Microsoft Update. When you turn on ...
2026-09-25 10:11 UTC -
web:support.sap.com
SAP security Patch Day Bulletin This post shares the information on security notes that remediate vulnerabilities discovered in SAP products. SAP strongly recommends that the customer visits the support portal and applies patches on priority to protect their SAP landscape. On 9th of June 2026 , SAP security patch day saw the release of 15 new security notes.
2026-09-25 10:11 UTC -
web:vulners.com
The open-source FAQ web application phpMyFAQ is vulnerable to a stored cross-site scripting (XSS) flaw in versions prior to 4.2.0-alpha . The root cause is an HTML entity bypass where the html_entity_decode() function converts entities into execut...
2026-09-25 10:11 UTC -
web:www.aikido.dev
CVE remediation is fixing known flaws in the software you run. Why upgrading often fails, what remediation actually involves, and how backporting fixes it.
2026-09-25 10:11 UTC -
web:www.cisecurity.org
Microsoft reports CVE - 2026 -56164 has been exploited in the wild. CVE - 2026 -56164 may allow remote cyber threat actors to gain unauthorized access to on-premises SharePoint Server instances. Microsoft noted that integrating its Antimalware Scan Interface (AMSI) can provide temporary mitigation by actively scanning and detecting malicious POST requests associated with exploitation attempts. The ...
2026-09-25 10:11 UTC -
web:www.dell.com
Dell OpenManage Enterprise remediation is available for multiple security vulnerabilities that may be exploited by malicious users to compromise the affected system.
2026-09-25 10:11 UTC -
web:www.oracle.com
This Critical Patch Update contains 1448 new security patches across the product families listed below. Please note that a My Oracle Support (MOS) note summarizing the content of this Critical Patch Update and other Oracle Software Security Assurance activities is located at July 2026 Critical Patch Update: Executive Summary and Analysis.
2026-09-25 10:11 UTC -
web:www.oracle.com
Additional CVEs addressed are: The patch for CVE - 2026 -34481 also addresses CVE - 2026 -34477, CVE - 2026 -34478, CVE - 2026 -34479, and CVE - 2026 -34480. Oracle Fusion Middleware Risk Matrix This Critical Security Patch Update contains 106 new security patches for Oracle Fusion Middleware. 53 of these vulnerabilities may be remotely exploitable without authentication, i.e., may be exploited over a ...
2026-09-25 10:11 UTC
AI Forensic Analysis
Only Available for Registered Users. Sign in to view.
Raw JSON
The full cvelistV5 record. Download as CVE-2026-56736.json.
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-56736",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-09-24T14:51:56.083267Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-09-24T14:52:17.024Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"references": [
{
"tags": [
"exploit"
],
"url": "https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-pgwp-vc7q-cvj3"
}
],
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "phpMyFAQ",
"vendor": "thorsten",
"versions": [
{
"status": "affected",
"version": "< 4.2.0-alpha"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "phpMyFAQ is an open source FAQ web application. A stored cross-site scripting (XSS) vulnerability in versions prior to 4.2.0-alpha allows any unauthenticated user (or low-privileged registered user) to inject arbitrary JavaScript that executes in an administrator's browser when they review or edit a user-submitted FAQ entry. This leads to admin account takeover via session theft. The vulnerability exists because `html_entity_decode()` converts HTML entities into executable HTML after `strip_tags()` has already passed them through, and the admin template renders the content with Twig's `|raw` filter without any output sanitization. Version 4.2.0-alpha fixes the issue."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 8.2,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-79",
"description": "CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-09-24T14:21:17.025Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"name": "https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-pgwp-vc7q-cvj3",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-pgwp-vc7q-cvj3"
}
],
"source": {
"advisory": "GHSA-pgwp-vc7q-cvj3",
"discovery": "UNKNOWN"
},
"title": "phpMyFAQ has Stored XSS in Admin FAQ Editor via HTML Entity Bypass in Frontend FAQ Submission"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2026-56736",
"datePublished": "2026-09-24T14:21:17.025Z",
"dateReserved": "2026-06-22T19:17:28.959Z",
"dateUpdated": "2026-09-24T14:52:17.024Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}