CVE-2021-37150

Name: CVE-2021-37150
Creator: NVD / NIST
Published: 2022-08-10T06:15:08.287+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.70%

Last modified Jun 17, 2026

CVE-2021-37150 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Improper Input Validation vulnerability in header parsing of Apache Traffic Server allows an attacker to request secure resources. This issue affects Apache Traffic Server 8.0.0 to 9.1.2.. EPSS estimates a 1.70% chance of exploitation in the next 30 days.

Description

Improper Input Validation vulnerability in header parsing of Apache Traffic Server allows an attacker to request secure resources. 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:H/I:N/A:N

EPSS Probability

1.70%

74.2th 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	10.0
Debian	Debian Linux	11.0
Fedoraproject	Fedora	35
Fedoraproject	Fedora	36

References

https://lists.apache.org/thread/rc64lwbdgrkv674koc3zl1sljr9vwg21Mailing List, Vendor Advisory
https://lists.debian.org/debian-lts-announce/2023/01/msg00019.htmlMailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CJ67IWD5PRJUOIYIDJRUG3UMS2UF4X4J/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZCSBQBYPOZSWS5LCOAQ6LJLRLXFIAW5A/
https://www.debian.org/security/2022/dsa-5206Third Party Advisory
https://lists.apache.org/thread/rc64lwbdgrkv674koc3zl1sljr9vwg21Mailing List, Vendor Advisory
https://lists.debian.org/debian-lts-announce/2023/01/msg00019.htmlMailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CJ67IWD5PRJUOIYIDJRUG3UMS2UF4X4J/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZCSBQBYPOZSWS5LCOAQ6LJLRLXFIAW5A/
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-2021-37150?

Improper Input Validation vulnerability in header parsing of Apache Traffic Server allows an attacker to request secure resources. This issue affects Apache Traffic Server 8.0.0 to 9.1.2.

How severe is CVE-2021-37150?

CVE-2021-37150 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.70% probability of exploitation in the next 30 days.

How do I fix CVE-2021-37150?

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-2021-37150?

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

Scan your code now

Source: NVD / NIST