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CVE-2026-44890 is a resource exhaustion vulnerability in Netty's Redis protocol support, specifically in the RedisDecoder component of netty-codec-redis. In affected versions prior to 4.1.135.Final and 4.2.15.Final, the decoder can be driven into unbounded direct memory consumption when processing crafted RESP payloads that omit the required carriage-return and line-feed terminator. By sending malformed Redis payloads across multiple concurrent connections, an attacker can cause the decoder to continue accumulating state and exhaust the server's direct memory pool, ultimately triggering OutOfDirectMemoryError and preventing normal request processing.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
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.
17 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A separate Netty vulnerability involving resource exhaustion, mentioned as another issue fixed in the same release.
A Netty Redis decoder denial-of-service vulnerability caused by crafted payloads missing CRLF terminators, leading to direct memory exhaustion across concurrent connections.
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.