CVE-2023-49295quic-go's path validation mechanism can cause denial of service
- 6.4MediumCVSS base score
- 1.2%Exploitation in 30 daysEPSS · top 31% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
quic-go is an implementation of the QUIC protocol (RFC 9000, RFC 9001, RFC 9002) in Go. An attacker can cause its peer to run out of memory sending a large number of PATH_CHALLENGE frames. The receiver is supposed to respond to each PATH_CHALLENGE frame with a PATH_RESPONSE frame. The attacker can prevent the receiver from sending out (the vast majority of) these PATH_RESPONSE frames by collapsing the peers congestion window (by selectively acknowledging received packets) and by manipulating the peer's RTT estimate. This vulnerability has been patched in versions 0.37.7, 0.38.2 and 0.39.4.
Timeline
ID reserved
By GitHub_M
- 47 days later
· 47 days later
Published
- 17 months later
· 17 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GitHub_MCNA (assigner) | 3.1 | Medium6.4 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:H |
| NVDNVD · Modified | 3.1 | Medium6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 1.2% · top 31% of all CVEs (13 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.4.
Affected products
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- Gogithub.com/quic-go/quic-goGHSA-ppxx-5m9h-6vxf (opens in a new tab)
References
References11
- https://github.com/quic-go/quic-go/security/advisories/GHSA-ppxx-5m9h-6vxf (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://github.com/quic-go/quic-go/commit/17fc98c2d81dbe685c19702dc694a9d606ac56dc (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/quic-go/quic-go/commit/21609ddfeff93668c7625a85eb09f1541fdad965 (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/quic-go/quic-go/commit/3a9c18bcd27a01c551ac9bf8bd2b4bded77c189a (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/quic-go/quic-go/commit/554d543b50b917369fb1394cc5396d928166cf49 (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/quic-go/quic-go/commit/6cc3d58935426191296171a6c0d1ee965e10534e (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/quic-go/quic-go/commit/9aaefe19fc3dc8c8917cc87e6128bb56d9e9e6cc (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/quic-go/quic-go/commit/a0ffa757499913f7be69aa78f573a6aee3430ae4 (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/quic-go/quic-go/commit/d7aa627ebde91cf799ada2a07443faa9b1e5abb8 (opens in a new tab)x_refsource_MISCx_transferred
- https://lists.fedoraproject.org/archives/list/[email protected]/message/G5RSHDTVMYAIGYVVFGKTMFHAZJMA3EVV/ (opens in a new tab)x_transferred
- https://lists.fedoraproject.org/archives/list/[email protected]/message/ZE7IOKXX5AATU2WR3V76X5Y3A44QAATG/ (opens in a new tab)x_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2024-0394 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-ppxx-5m9h-6vxf (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2023-49295)Record last updated .