CVE-2023-6889Public exploitNetwork attack vector

Stored script execution via unescaped tag names

Published Dec 16, 2023 · Updated Aug 2, 2024

Stored XSS in phpMyFAQ before 3.1.17 allows remote authenticated users to execute script in another user's browser through a crafted tag. The admin tag autocomplete endpoint returned stored tag names without HTML-entity encoding, while the tag editor inserted edited values into span markup without escaping. An account able to create or edit tags is required, and execution occurs when another user loads or interacts with the affected tag interface, enabling actions and data access in that user's session.

CVSS severity5.4
Medium
EPSS probability0.46%
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 3.1.17 allows remote authenticated users to execute script in another user's browser through a crafted tag. The admin tag autocomplete endpoint returned stored tag names without HTML-entity encoding, while the tag editor inserted edited values into span markup without escaping. An account able to create or edit tags is required, and execution occurs when another user loads or interacts with the affected tag interface, enabling actions and data access in that user's session.

The record

CVE
CVE-2023-6889
Published
Dec 16, 2023
Updated
Aug 2, 2024
Vendor
Thorsten Rinne
Product
phpMyFAQ
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 16, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record 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 <3.1.17

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Thorsten Rinne · phpMyFAQversion=unspecified <3.1.17

Published CVSS scores

5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
5.4huntr.devCVSS:3.0/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
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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