Description

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.

INFO

Published Date :

2026-04-16T14:30:51.568Z

Last Modified :

2026-04-16T15:24:43.164Z

Source :

Google
AFFECTED PRODUCTS

The following products are affected by CVE-2026-6409 vulnerability.

Vendors Products
Protocol Buffers
  • Protobuf-php
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-6409.

URL Resource
https://github.com/protocolbuffers/protobuf/security/advisories/GHSA-p2gh-cfq4-4wjc cve-icon cve-icon
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