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CVE-2026-52307 is an authenticated stored cross-site scripting vulnerability in the Column Management Article Edit functionality of ClassCMS 1CMS v5.6. An authenticated administrator can submit crafted JavaScript or HTML in an article title field. The application stores the untrusted title and renders it without sufficient sanitization or context-appropriate output encoding on article list and article detail pages, causing the payload to execute in the browsers of users who view the affected content. Earlier versions 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 valid public exploits. Mallory filtered out 1 candidate as fakes, detection scripts, or README-only repos.
All candidate exploits were filtered out by Mallory's validation.
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.