CVE-2026-76166

The record

A flaw was found in mod_cluster's AdvertiseListenerImpl (org.jboss.modcluster core module). A single crafted UDP multicast datagram with a valid HTTP status line and a "Server:" header but without the "Date:", "Digest:", and "Sequence:" headers triggers a NullPointerException in verifyDigest() that is not caught by the worker thread's exception handler. This causes the advertise listener thread to terminate permanently. The failure is silent (isListening() continues to return true) and persists until the node is restarted. The crash occurs before the AdvertiseSecurityKey comparison, so deployments with a configured security key are still affected.

Affected packages

Related vulnerabilities

• CVE-2026-112405 Pillow is a Python imaging library. CWE-476
• CVE-2026-112392 Pillow is a Python imaging library. CWE-476
• CVE-2026-100348 kin-openapi is a Go project for handling OpenAPI files. CWE-476
• CVE-2026-100349 kin-openapi is a Go project for handling OpenAPI files. CWE-476
• CVE-2026-109280 ImageMagick 7.1.0-20 before 7.1.2-32 contains a use after free vulnerability in the -fx… CWE-476
• CVE-2026-109272 ImageMagick 7.1.1-31 before 7.1.2-32 contains a NULL pointer dereference in the… CWE-476
• CVE-2026-109258 ImageMagick 7.1.0-20 before 7.1.2-32 contains an invalid memory free vulnerability in the… CWE-476
• CVE-2026-107655 A flaw was found in CUPS. CWE-476