CVE-2023-2999Public exploitNetwork attack vector

Stored script execution via unsanitized FAQ answers

Published May 31, 2023 · Updated Jan 10, 2025

Stored cross-site scripting in phpMyFAQ before 3.1.14 allows remote authenticated users to execute script in visitors' browsers. The FAQ rendering path passes a stored answer directly to the template; the fix sanitizes it in FaqHelper::cleanUpContent before output. Administrator access is required to store the crafted FAQ answer, and viewing that answer triggers script execution in the visitor's phpMyFAQ origin.

CVSS severity6.1
Medium
EPSS probability0.48%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored cross-site scripting in phpMyFAQ before 3.1.14 allows remote authenticated users to execute script in visitors' browsers. The FAQ rendering path passes a stored answer directly to the template; the fix sanitizes it in FaqHelper::cleanUpContent before output. Administrator access is required to store the crafted FAQ answer, and viewing that answer triggers script execution in the visitor's phpMyFAQ origin.

The record

CVE
CVE-2023-2999
Published
May 31, 2023
Updated
Jan 10, 2025
Vendor
Thorsten Rinne
Product
phpMyFAQ
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. May 31, 2023CVE publishedPublication date reported by the CVE source.
  2. Jan 10, 2025Record 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=unspecified <3.1.14

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Thorsten Rinne · phpMyFAQversion=unspecified <3.1.14

Published CVSS scores

6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
6.7GitHub Advisory DatabaseCVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:H

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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007JavaScript/JScript

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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