CVE-2023-0308Network attack vector

Stored XSS via unescaped user display names

Published Jan 15, 2023 · Updated Apr 7, 2025

Stored cross-site scripting in phpMyFAQ before 3.1.10 allows remote authenticated users to execute script code in another user's browser. ajaxservice.php accepted the POST name field without sanitizing special characters, while three display paths rendered stored names without HTML-entity encoding. A low-privileged account can plant the payload; execution occurs when an affected page displays that name to another user.

CVSS severity7.6
High
EPSS probability0.49%
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 3.1.10 allows remote authenticated users to execute script code in another user's browser. ajaxservice.php accepted the POST name field without sanitizing special characters, while three display paths rendered stored names without HTML-entity encoding. A low-privileged account can plant the payload; execution occurs when an affected page displays that name to another user.

The record

CVE
CVE-2023-0308
Published
Jan 15, 2023
Updated
Apr 7, 2025
Vendor
Thorsten Rinne
Product
phpMyFAQ
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 15, 2023CVE publishedPublication date reported by the CVE source.
  2. Apr 7, 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 <3.1.10

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Thorsten Rinne · phpMyFAQversion=unspecified <3.1.10

Published CVSS scores

7.6huntr.devCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H
5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/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 exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007Command and Scripting Interpreter: JavaScript

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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