CVE-2022-3766Public exploitNetwork attack vector

Browser script execution via unescaped search quotes

Published Oct 31, 2022 · Updated Feb 16, 2026

Reflected XSS in phpMyFAQ before 3.1.8 allows remote attackers to execute script in a user's browser through a crafted search request. phpmyfaq/index.php passes the search term to Strings::htmlspecialchars without ENT_QUOTES, leaving quotes usable to escape the search field's HTML attribute. Exploitation requires a user to open the crafted request; injected script runs in the phpMyFAQ origin with that user's browser privileges.

CVSS severity6.1
Medium
EPSS probability6.13%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reflected XSS in phpMyFAQ before 3.1.8 allows remote attackers to execute script in a user's browser through a crafted search request. phpmyfaq/index.php passes the search term to Strings::htmlspecialchars without ENT_QUOTES, leaving quotes usable to escape the search field's HTML attribute. Exploitation requires a user to open the crafted request; injected script runs in the phpMyFAQ origin with that user's browser privileges.

The record

CVE
CVE-2022-3766
Published
Oct 31, 2022
Updated
Feb 16, 2026
Vendor
Thorsten Rinne
Product
phpMyFAQ
Classifications
CWE-79, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 31, 2022CVE publishedPublication date reported by the CVE source.
  2. Feb 16, 2026Record 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 <3.1.8

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Thorsten Rinne · phpMyFAQversion=unspecified <3.1.8

Published CVSS scores

6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
7.3huntr.devCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

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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