CVE Explorer
CVE-2026-12707
Summary
Cloudflare quiche was discovered to be vulnerable to memory resource exhaustion due to unbounded queuing of post-handshake client migration events.
Impact
quiche supports the connection migration features described in Section 9 of RFC 9000, which allows a single QUIC connection to survive changes in the network path. Although quiche implements the protections described in Section 9.3 of RFC 9000 to limit server state commitment, it was discovered that the collection of PathEvent
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":[{"lessThan":"0.29.3","status":"affected","version":"0.15.0","versionType":"semver"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:43c7814742b582f94a4348350173ca653281c2da6c36204d9062bbef605f0250 · sha256:958bf45fbc2cbc2e… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","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:H","version":"3.1"},"metric_type":"cvssV3_1"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:43c7814742b582f94a4348350173ca653281c2da6c36204d9062bbef605f0250 · sha256:958bf45fbc2cbc2e… · /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:v2:43c7814742b582f94a4348350173ca653281c2da6c36204d9062bbef605f0250 · sha256:958bf45fbc2cbc2e… · /containers/cna/problemTypes/0/descriptions/0
Source references
1 source assertion{"url":"https://github.com/cloudflare/quiche/security/advisories/GHSA-4q5x-gp38-rfp4"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:43c7814742b582f94a4348350173ca653281c2da6c36204d9062bbef605f0250 · sha256:958bf45fbc2cbc2e… · /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.