CVE Explorer
CVE-2026-11941
Cloudflare Quiche was affected by 2 use-after-free vulnerabilities in the connection ID iterator FFI functions.
The “quiche_connection_id_iter_next” and “quiche_conn_retired_scid_next” functions would return a pointer to a “ConnectionId” to the applications via function arguments, but the owned “ConnectionId” would be dropped at the end of those functions' scope.
Only applications using those FFI functions are affected. The FFI API is disabled by default by a build-time feature flag.
Im
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"defaultStatus":"unaffected","product":"Quiche","repo":"https://github.com/cloudflare/quiche","vendor":"Cloudflare","versions":[{"lessThanOrEqual":"0.29.1","status":"affected","version":"0.20.0","versionType":"semver"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:48257217b46e1197f25472b2ef146569b36d88955e2aec561df0f5e19daeb073 · sha256:45dc953cb80f64f3… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":5.6,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L","version":"3.1"},"metric_type":"cvssV3_1"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:48257217b46e1197f25472b2ef146569b36d88955e2aec561df0f5e19daeb073 · sha256:45dc953cb80f64f3… · /containers/cna/metrics/0/cvssV3_1
CWE assertions
1 source assertion{"cweId":"CWE-416","description":"CWE-416 Use after free","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:48257217b46e1197f25472b2ef146569b36d88955e2aec561df0f5e19daeb073 · sha256:45dc953cb80f64f3… · /containers/cna/problemTypes/0/descriptions/0
Source references
1 source assertion{"url":"https://github.com/cloudflare/quiche/security/advisories/GHSA-mh64-ph39-mrc9"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:48257217b46e1197f25472b2ef146569b36d88955e2aec561df0f5e19daeb073 · sha256:45dc953cb80f64f3… · /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.