VULNERABILITY INTELLIGENCE

CVE-2020-9494

CVSS score7.5 HIGH

EPSS probability3.58%

CISA KEVNot currently listed

Published2020-06-24

Last modified2026-06-17

CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Description

Apache Traffic Server 6.0.0 to 6.2.3, 7.0.0 to 7.1.10, and 8.0.0 to 8.0.7 is vulnerable to certain types of HTTP/2 HEADERS frames that can cause the server to allocate a large amount of memory and spin the thread.

Weakness classification

CWE-770: Allocation of Resources Without Limits or Throttling

Primary references

security@apache.org — Not Applicable
security@apache.org — Mailing List, Vendor Advisory
security@apache.org — Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 — Not Applicable
af854a3a-2127-422b-91ae-364da2661108 — Mailing List, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108 — Third Party Advisory