What’s Vulnerable › Vulnerabilities

CVE-2018-6347

• Severity: high (CVSS 7.5 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2018-12-31 · updated 2026-06-17
• Weakness: CWE-400

Description

An issue in the Proxygen handling of HTTP2 parsing of headers/trailers can lead to a denial-of-service attack. This affects Proxygen prior to v2018.12.31.00.

Affected products

• Facebook Proxygen before 2015-11-09: before 2018.12.31.00 — fixed in 2018.12.31.00

How to fix

Upgrade to a fixed version: Facebook Proxygen before 2015-11-09 2018.12.31.00. Check the vendor advisory for mitigations.

References

• https://github.com/facebook/proxygen/commit/223e0aa6bc7590e86af1e917185a2e0efe160711
• https://github.com/facebook/proxygen/commit/223e0aa6bc7590e86af1e917185a2e0efe160711

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