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CVE-2026-96874 is a stored cross-site scripting vulnerability in the MediaWiki Cargo extension through version 3.9.4. Improper neutralization of input during web-page generation permits attacker-controlled script content to be stored and subsequently executed in the browsers of users viewing affected wiki pages.
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What an attacker gets, and what they’ve been doing with it.
Patch, then assume compromise.
1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos.
The repository contains a README and one Python proof-of-concept script, poc.py. The script accepts a Cargo table name and field name, constructs a #cargo_declare declaration whose _drilldownTabs value contains a hardcoded SVG onload XSS payload, and prints a target Special:Drilldown URL rather than issuing network requests itself. The exploit relies on an authorized template edit to persist attacker-controlled markup in Cargo metadata; viewing the corresponding Drilldown page causes the tab label to be rendered as raw HTML in vulnerable versions. The payload is intentionally non-destructive and only sets document.body.dataset.cargoTab to demonstrate script execution. README documentation describes affected versions, prerequisites, cleanup, and upstream references.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
1 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.