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CVE-2026-4420 is a stored cross-site scripting vulnerability in the Bludit CMS page creation functionality. An authenticated user with page creation privileges, including roles such as Author, Editor, or Administrator, can inject malicious JavaScript into the tags field when creating a new article. The payload is then stored by the application and executed in a victim’s browser when the victim visits the URL of the created resource. The resource itself is accessible without authentication. Based on the provided content, versions 3.17.2 and 3.18.0 were tested and confirmed vulnerable; other versions were not tested and may also be affected.
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What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
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.
3 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.