Advisories for Composer/Google/Protobuf package

2026

Withdrawn Advisory: Protobuf: Denial of Service issue through malicious messages containing negative varints or deep recursion

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-p2gh-cfq4-4wjc. This link is maintained to preserve external references. Original 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.

2022

Withdrawn Advisory: NULL Pointer Dereference in Protocol Buffers

Withdrawn Advisory This advisory has been withdrawn because the protobuf vulnerability comes from the compiler rather that the code. This link is maintained to preserve external references. Original Description Nullptr dereference when a null char is present in a proto symbol. The symbol is parsed incorrectly, leading to an unchecked call into the proto file's name during generation of the resulting error message. Since the symbol is incorrectly parsed, the …