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CVE-2026-6409

7.1 high SSVC exploitation: none Awaiting Analysis
NVD · CVE.org

A Denial of Service (DoS) vulnerability exists in the Protobuf PHP library during the parsing of untrusted input. Maliciously structured messages—specifically those containing negative varints or deep recursion—can be used to crash the application, impacting service availability.

Fix

Nothing published yet: no patch, vendor advisory or mitigation reference on NVD, no vendor advisory in the News for this CVE, not in CISA's KEV, no fixed package version. BaselineWatch does not guess at one.

Change history 1

  1. First seenCVSS 7.1NVD modified 2026-10-26 21:10

Affected (CPE criteria) 0

NVD has not attached CPE configurations yet.

References 1