https://patchthecve.com/CVEs with upgrade or downgrade fix stepshttps://patchthecve.com/cve/CVE-2025-55181.htmlhttps://patchthecve.com/cve/CVE-2025-55181.htmlSun, 18 Oct 2026 17:10:00 +0000MEDIUM 5.3: Sending an HTTP request/response body with greater than 2^31 bytes triggers an infinite loop in proxygen::coro::HTTPQuicCoroSession which blocks the backing event loop and unconditionally appends data to a std::vector per-loop iteration. This issue leads to unbounded memory growth and eventually cauhttps://patchthecve.com/cve/CVE-2021-24029.htmlhttps://patchthecve.com/cve/CVE-2021-24029.htmlWed, 17 Jun 2026 03:39:11 +0000HIGH 7.5: A packet of death scenario is possible in mvfst via a specially crafted message during a QUIC session, which causes a crash via a failed assertion. Per QUIC specification, this particular message should be treated as a connection error. This issue affects mvfst versions prior to commit a67083ff4b8dchttps://patchthecve.com/cve/CVE-2020-1897.htmlhttps://patchthecve.com/cve/CVE-2020-1897.htmlWed, 17 Jun 2026 03:02:34 +0000CRITICAL 9.8: A use-after-free is possible due to an error in lifetime management in the request adaptor when a malicious client invokes request error handling in a specific sequence. This issue affects versions of proxygen prior to v2020.05.18.00.https://patchthecve.com/cve/CVE-2019-11940.htmlhttps://patchthecve.com/cve/CVE-2019-11940.htmlWed, 17 Jun 2026 02:13:52 +0000CRITICAL 9.8: 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.https://patchthecve.com/cve/CVE-2019-11921.htmlhttps://patchthecve.com/cve/CVE-2019-11921.htmlWed, 17 Jun 2026 02:13:50 +0000CRITICAL 9.8: An out of bounds write is possible via a specially crafted packet in certain configurations of Proxygen due to improper handling of Base64 when parsing malformed binary content in Structured HTTP Headers. This issue affects versions of proxygen prior to v2019.07.22.00.https://patchthecve.com/cve/CVE-2018-6347.htmlhttps://patchthecve.com/cve/CVE-2018-6347.htmlWed, 17 Jun 2026 02:01:43 +0000HIGH 7.5: 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.https://patchthecve.com/cve/CVE-2018-6346.htmlhttps://patchthecve.com/cve/CVE-2018-6346.htmlWed, 17 Jun 2026 02:01:42 +0000HIGH 7.5: A potential denial-of-service issue in the Proxygen handling of invalid HTTP2 priority settings (specifically a circular dependency). This affects Proxygen prior to v2018.12.31.00.https://patchthecve.com/cve/CVE-2018-6343.htmlhttps://patchthecve.com/cve/CVE-2018-6343.htmlWed, 17 Jun 2026 02:01:42 +0000HIGH 7.5: Proxygen fails to validate that a secondary auth manager is set before dereferencing it. That can cause a denial of service issue when parsing a Certificate/CertificateRequest HTTP2 Frame over a fizz (TLS 1.3) transport. This issue affects Proxygen releases starting from v2018.10.29.00 until the fixhttps://patchthecve.com/cve/CVE-2015-7265.htmlhttps://patchthecve.com/cve/CVE-2015-7265.htmlWed, 17 Jun 2026 00:32:09 +0000HIGH 7.5: Facebook Proxygen before 2015-11-09 mismanages HTTPMessage.request state, which allows remote attackers to conduct hijacking attacks and bypass ACL checks.https://patchthecve.com/cve/CVE-2015-7264.htmlhttps://patchthecve.com/cve/CVE-2015-7264.htmlWed, 17 Jun 2026 00:32:09 +0000CRITICAL 9.8: The SPDY/2 codec in Facebook Proxygen before 2015-11-09 truncates a certain field to two bytes, which allows hijacking and injection attacks.https://patchthecve.com/cve/CVE-2015-7263.htmlhttps://patchthecve.com/cve/CVE-2015-7263.htmlWed, 17 Jun 2026 00:32:09 +0000HIGH 7.5: The SPDY/2 codec in Facebook Proxygen before 2015-11-09 allows remote attackers to conduct hijacking attacks and bypass ACL checks via a crafted host value.