CVE-2026-103444
Stored XSS through system messages in WikiForum
Improper neutralization of Script-Related HTML tags in a web page (basic XSS) vulnerability in The Wikimedia Foundation MediaWiki WikiForum extension allows Stored XSS.
This issue affects MediaWiki WikiForum extension: master.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- High
- User interaction
- Passive
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- Low
Exploit likelihood
What each source reports
CVE List Score used
Stored XSS through system messages in WikiForum
Improper neutralization of Script-Related HTML tags in a web page (basic XSS) vulnerability in The Wikimedia Foundation MediaWiki WikiForum extension allows Stored XSS.
This issue affects MediaWiki WikiForum extension: master.
- Record
CVE-2026-103444- CVSS 4.0
- 1.1 Low
CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:P/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/E:P/S:N/AU:Y/R:U/V:D/RE:M/U:Amber - Weakness
- CWE-80
- Updated
- 2026-11-02
EUVDEUVD-2026-90082
Improper neutralization of Script-Related HTML tags in a web page (basic XSS) vulnerability in The Wikimedia Foundation MediaWiki WikiForum extension allows Stored XSS.
This issue affects MediaWiki WikiForum extension: master.
- Record
EUVD-2026-90082- CVSS 4.0
- 1.1 Low
CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:P/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/E:P/S:N/AU:Y/R:U/V:D/RE:M/U:Amber - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-wr3h-qfmx-xxrx
Improper neutralization of Script-Related HTML tags in a web page (basic XSS) vulnerability in...
Improper neutralization of Script-Related HTML tags in a web page (basic XSS) vulnerability in The Wikimedia Foundation MediaWiki WikiForum extension allows Stored XSS.
This issue affects MediaWiki WikiForum extension: master.
- Record
GHSA-wr3h-qfmx-xxrx- CVSS 4.0
- 1.1 Low
CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:P/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:N/AU:Y/R:U/V:D/RE:M/U:Amber - Weakness
- CWE-80
- Updated
- 2026-11-02
NVD
Improper neutralization of Script-Related HTML tags in a web page (basic XSS) vulnerability in The Wikimedia Foundation MediaWiki WikiForum extension allows Stored XSS.
This issue affects MediaWiki WikiForum extension: master.
- Record
CVE-2026-103444- CVSS 4.0
- 1.1 Low
CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:P/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:N/AU:Y/R:U/V:D/RE:M/U:Amber - Weakness
- CWE-80
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-103444 is a low vulnerability (CVSS 1.1) in The Wikimedia Foundation Mediawiki Wikiforum Extension, published September 30, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.34%, the 27th percentile. No source names a fixed version.