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CVE-2026-30833 is a NoSQL injection vulnerability in Rocket.Chat’s account service used by the ddp-streamer microservice. In affected versions prior to 7.10.8, 7.11.5, 7.12.5, 7.13.4, 8.0.2, 8.1.1, and 8.2.0, the username-based authentication flow embeds user-controlled input directly into a MongoDB query selector without sufficient validation or type enforcement. Because the application expects a username string but does not safely constrain the supplied value, an unauthenticated attacker can provide MongoDB operator expressions instead of a literal username. This allows manipulation of the authentication query so that it matches unintended user records during login processing.
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No public exploit code observed for this vulnerability.
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Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
4 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A high-severity unauthenticated NoSQL injection vulnerability in Rocket.Chat's ddp-streamer subsystem, cited as part of the same DDP-layer vulnerability cluster.
A GitHub Security Lab-reported vulnerability affecting Rocket.Chat; the content only indicates it is part of a set of CVEs dominated by access-control and web-application logic defects.
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.