CVE Explorer
CVE-2026-40898
quic-go is an implementation of the QUIC protocol in Go. Prior to version 0.59.1, an attacker can cause excessive memory allocation in quic-go's HTTP/3 client and server implementations by sending a QPACK-encoded HEADERS frame that decodes into a large trailer field section with many unique field names and/or large values. The implementation builds an `http.Header` for the corresponding `http.Request` or `http.Response`, while only enforcing limits on the size of the QPACK-compressed HEADERS fra
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"product":"quic-go","vendor":"quic-go","versions":[{"status":"affected","version":"< 0.59.1"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:aa7a8bb472618ea335f2241b1cd9331c51ca009ced6e92e2f66edf172ae31472 · sha256:eb2c08991ac75730… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":5.3,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","version":"3.1"},"metric_type":"cvssV3_1"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:aa7a8bb472618ea335f2241b1cd9331c51ca009ced6e92e2f66edf172ae31472 · sha256:eb2c08991ac75730… · /containers/cna/metrics/0/cvssV3_1
CWE assertions
1 source assertion{"cweId":"CWE-770","description":"CWE-770: Allocation of Resources Without Limits or Throttling","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:aa7a8bb472618ea335f2241b1cd9331c51ca009ced6e92e2f66edf172ae31472 · sha256:eb2c08991ac75730… · /containers/cna/problemTypes/0/descriptions/0
Source references
2 source assertions{"name":"https://github.com/quic-go/quic-go/releases/tag/v0.59.1","tags":["x_refsource_MISC"],"url":"https://github.com/quic-go/quic-go/releases/tag/v0.59.1"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:aa7a8bb472618ea335f2241b1cd9331c51ca009ced6e92e2f66edf172ae31472 · sha256:eb2c08991ac75730… · /containers/cna/references/1
{"name":"https://github.com/quic-go/quic-go/security/advisories/GHSA-vvgj-x9jq-8cj9","tags":["x_refsource_CONFIRM"],"url":"https://github.com/quic-go/quic-go/security/advisories/GHSA-vvgj-x9jq-8cj9"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:aa7a8bb472618ea335f2241b1cd9331c51ca009ced6e92e2f66edf172ae31472 · sha256:eb2c08991ac75730… · /containers/cna/references/0
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.