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CVE-2026-63383

CVE Details​

Visit the official vulnerability details page for CVE-2026-63383 to learn more.

Initial Publication​

08/20/2026

Last Update​

09/09/2026

Third Party Dependency​

libevent

NIST CVE Summary​

Libevent is an event notification library. Prior to 2.1.13 and 2.2.2-alpha, libevent can read beyond a contiguous evbuffer region in event_tagging.c when decode_tag_internal requests at most five bytes from evbuffer_pullup but iterates using the full logical buffer length. A fragmented evbuffer containing a six-byte malformed tag can therefore advance past the pullup window and trigger an out-of-bounds read, which can crash a process that decodes attacker-controlled tagged RPC data. This issue is fixed in versions 2.1.13 and 2.2.2-alpha.

CVE Severity​

8.7

Our Official Summary​

Investigation is ongoing to determine how this vulnerability affects our products.

Status​

Awaiting Analysis

Affected Products & Versions​

VersionPaletteAIPaletteAI VerteX
1.4.0⚠️ Impacted⚠️ Impacted
1.3.2⚠️ Impacted⚠️ Impacted
1.2.2⚠️ Impacted⚠️ Impacted

Revision History​

No revisions available.