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CVE-2020-9494
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…
High7.5EPSS 3.6%
- Published
- Updated
- Reserved
- Assigned by
- apache
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 3.6% · top 11% of all CVEs (6 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Weakness
- Information Disclosure
- CWE-770 (opens in a new tab)All about CWE-770 and its CVEs
Affected products
Apache Software Foundation · Apache Traffic Server
- affected 6.0.0 to 6.2.3
- affected 7.0.0 to 7.1.10
- affected 8.0.0 to 8.0.7
References (3)
- https://lists.apache.org/thread.html/rf7f86917f42fdaf904d99560cba0c016e03baea6244c47efeb60ecbe%40%3Cdev.trafficserver.apache.org%3E (opens in a new tab)x_refsource_CONFIRMx_transferred
- DSA-4710 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- [oss-security] 20210301 CVE-2021-25329: Apache Tomcat Incomplete fix for CVE-2020-9484 (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2020-9494)Record last updated .