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CVE-2026-126559

MEDIUMCVSS 4.8/10EPSS 0.24%

Last modified

CVE-2026-126559 is a medium-severity vulnerability rated 4.8/10 on the CVSS scale. Semantic MediaWiki 4.2.0 before 7.4.1 contains a stored cross-site scripting vulnerability in OptionsBuilder::profiles() that allows users with the smw-schemaedit right to inject markup. Attackers can save FACETEDSEARCH_PROFILE_SCHEMA profile keys or labels that break out of option elements, executing scripts for every Special:FacetedSearch visitor including administrators.. EPSS estimates a 0.24% chance of exploitation in the next 30 days.

Description

Semantic MediaWiki 4.2.0 before 7.4.1 contains a stored cross-site scripting vulnerability in OptionsBuilder::profiles() that allows users with the smw-schemaedit right to inject markup. Attackers can save FACETEDSEARCH_PROFILE_SCHEMA profile keys or labels that break out of option elements, executing scripts for every Special:FacetedSearch visitor including administrators.

Metrics

CVSS 3.1
4.8/10

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

CVSS 4.0
4.8/10

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/E:X/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:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability
0.24%

15.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
SemanticMediaWikiSemanticMediaWiki>= 4.2.0, < 7.4.1

References

Timeline

Published
Last Modified
Status
Awaiting Analysis

Frequently Asked Questions

What is CVE-2026-126559?
Semantic MediaWiki 4.2.0 before 7.4.1 contains a stored cross-site scripting vulnerability in OptionsBuilder::profiles() that allows users with the smw-schemaedit right to inject markup. Attackers can save FACETEDSEARCH_PROFILE_SCHEMA profile keys or labels that break out of option elements, executing scripts for every Special:FacetedSearch visitor including administrators.
How severe is CVE-2026-126559?
CVE-2026-126559 has a CVSS score of 4.8/10 (MEDIUM severity). The EPSS model estimates a 0.24% probability of exploitation in the next 30 days.
How do I fix CVE-2026-126559?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST