CVE-2022-31779

Name: CVE-2022-31779
Creator: NVD / NIST
Published: 2022-08-10T06:15:08.65+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.89%

Last modified Jun 17, 2026

CVE-2022-31779 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Improper Input Validation vulnerability in HTTP/2 header parsing of Apache Traffic Server allows an attacker to smuggle requests. This issue affects Apache Traffic Server 8.0.0 to 9.1.2.. EPSS estimates a 1.89% chance of exploitation in the next 30 days.

Description

Improper Input Validation vulnerability in HTTP/2 header parsing of Apache Traffic Server allows an attacker to smuggle requests. This issue affects Apache Traffic Server 8.0.0 to 9.1.2.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

1.89%

76.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Apache	Traffic Server	>= 8.0.0, <= 8.1.4
Apache	Traffic Server	>= 9.0.0, <= 9.1.2
Debian	Debian Linux	11.0
Fedoraproject	Fedora	35
Fedoraproject	Fedora	36

References

https://lists.apache.org/thread/rc64lwbdgrkv674koc3zl1sljr9vwg21Mailing List, Vendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CJ67IWD5PRJUOIYIDJRUG3UMS2UF4X4J/Mailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZCSBQBYPOZSWS5LCOAQ6LJLRLXFIAW5A/Mailing List, Third Party Advisory
https://www.debian.org/security/2022/dsa-5206Third Party Advisory
https://lists.apache.org/thread/rc64lwbdgrkv674koc3zl1sljr9vwg21Mailing List, Vendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CJ67IWD5PRJUOIYIDJRUG3UMS2UF4X4J/Mailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZCSBQBYPOZSWS5LCOAQ6LJLRLXFIAW5A/Mailing List, Third Party Advisory
https://www.debian.org/security/2022/dsa-5206Third Party Advisory

Timeline

Published: Aug 10, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-31779?

Improper Input Validation vulnerability in HTTP/2 header parsing of Apache Traffic Server allows an attacker to smuggle requests. This issue affects Apache Traffic Server 8.0.0 to 9.1.2.

How severe is CVE-2022-31779?

CVE-2022-31779 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.89% probability of exploitation in the next 30 days.

How do I fix CVE-2022-31779?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-31779?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST