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CVE-2026-48849 is a stored cross-site scripting vulnerability in Roundcube Webmail affecting 1.6.x before 1.6.16 and 1.7.x before 1.7.1. The issue is caused by an unsanitized subject field in the draft restored value, specifically in the draft restore dialog/workflow. In shared mailbox scenarios, attacker-controlled content placed into the draft subject can be stored and later rendered without proper sanitization, enabling stored XSS as well as HTML/CSS injection in the Roundcube web interface.
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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 2 candidates 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.