CVE-2019-11940
highpriority · track · 39EPSS 0.014 · 72 %ileEUUSEPSS · scored 2026-10-27
In the course of decompressing HPACK inside the HTTP2 protocol, an unexpected sequence of header table resize operations can place the header table into a corrupted state, leading to a use-after-free condition and undefined behavior. This issue affects Proxygen from v0.29.0 until v2017.04.03.00.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 7.5–9.8
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (3)
Products and version ranges known to be affected.
also known as (3)
Other names and identifiers for this entity.
sources
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references (7)
External citations — patches, advisories, analysis.
- https://github.com/facebook/proxygen/commit/f43b134cc5c19d8532e7fb670a1c02e85f7a8d4fcnnvd
- https://nvd.nist.gov/vuln/detail/CVE-2019-11940cnnvd
- https://www.facebook.com/security/advisories/cve-2019-11940cnnvd
- https://github.com/facebook/proxygen/commit/f43b134cc5c19d8532e7fb670a1c02e85f7a8d4fenisa_euvd
- https://www.facebook.com/security/advisories/cve-2019-11940enisa_euvd
- https://github.com/facebook/proxygen/commit/f43b134cc5c19d8532e7fb670a1c02e85f7a8d4fPatchThird Party Advisorynvd
- https://www.facebook.com/security/advisories/cve-2019-11940Third Party Advisorynvd
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