CVE-2026-6409
EPSS 0.03%Protobuf: Denial of Service issue through malicious messages containing negative varints or deep recursion
發布日:2026/3/25修改日:2026/4/16
描述
### Impact 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 `varint`s or deep recursion—can be used to crash the application, impacting service availability. ### Patches Patches have been released to 5.34.0-RC1 and 4.33.6.
受影響套件(2)
- Debian/protobuffrom 0
- Packagist/google/protobuffrom 0, < 4.33.6
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 4.0 | — | 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 |
參考連結(8)
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2026-6409
- ADVISORYhttps://security-tracker.debian.org/tracker/CVE-2026-6409
- PATCHhttps://github.com/protocolbuffers/protobuf
- WEBhttps://github.com/protocolbuffers/protobuf/commit/60e93d2d104f2af9cd345b1c6f3891d91430244a
- WEBhttps://github.com/protocolbuffers/protobuf/commit/c8e9b27d95c6ab2d0668b5889e7dac2c477b7038
- WEBhttps://github.com/protocolbuffers/protobuf/issues/24159
- WEBhttps://github.com/protocolbuffers/protobuf/issues/25067
- WEBhttps://github.com/protocolbuffers/protobuf/security/advisories/GHSA-p2gh-cfq4-4wjc