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1 vulnerability by Protocol Buffers

CVE-2026-6409 (GCVE-0-2026-6409)

Vulnerability from cvelistv5 – Published: 2026-04-16 14:30 – Updated: 2026-04-16 15:24
VLAI?
Title
Denial of Service (DoS) vulnerability exists in the Protobuf PHP library during the parsing of untrusted input
Summary
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.
Severity ?
7.1 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
CWE
  • CWE-20 - Improper input validation
Assigner
References
Impacted products
Vendor Product Version
Protocol Buffers Protobuf-php (Pecl) Affected: 0 , < 5.34.0-RC1 (semver)
Affected: 0 , < 4.33.6 (semver)
Create a notification for this product.
Credits
https://github.com/34selen
Show details on NVD website
To clipboard 

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