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Δ / VULNERABILITY RECORD

CVE-2026-97031.

Source-reported disclosure and enrichment record.

SEVERITY / CVSSHIGH / 7.5CVSS 3.1 · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EXPLOITATION STATUSNot listed in the cached KEV catalogThis does not establish absence of exploitation.
RECORD STATUSAwaiting AnalysisModified Oct 09, 2026

Disclosure summary

Multiple ECH outer extension references are not permitted under RFC 9849; previously, a client could send a well-crafted packet that could trigger memory exhaustion in the server process by specifying multiple references. We now reject these as malformed and curb the memory amplification vector as a result.

Source-reported weakness categories

CWE-405

Source-specific records & product guidance

Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.

NIST National Vulnerability Database · NVD-CVE-2026-97031

Open original source · Updated Oct 09, 2026

Only CPE matches marked vulnerable=true are indexed. AND/OR platform conditions must be checked in the original NVD record.

Original records & references

PUBLISHED 2026-10-08T19:17:06-04:00
MODIFIED 2026-10-09T12:35:35-04:00
INGESTED 2026-10-10T20:55:12-04:00