CVE-2024-35161

Name: CVE-2024-35161
Creator: NVD / NIST
Published: 2024-07-26T10:15:02.567+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.97%

Last modified Jun 17, 2026

CVE-2024-35161 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Apache Traffic Server forwards malformed HTTP chunked trailer section to origin servers. This can be utilized for request smuggling and may also lead cache poisoning if the origin servers are vulnerable. This issue affects Apache Traffic Server: from 8.0.0 through 8.1.10, from 9.0.0 through 9.2.4. Users can set a new setting (proxy.config.http.drop_chunked_trailers) not to forward chunked trailer section. Users are recommended to upgrade to version 8.1.11 or 9.2.5, which fixes the issue.. EPSS estimates a 0.97% chance of exploitation in the next 30 days.

Description

Apache Traffic Server forwards malformed HTTP chunked trailer section to origin servers. This can be utilized for request smuggling and may also lead cache poisoning if the origin servers are vulnerable. This issue affects Apache Traffic Server: from 8.0.0 through 8.1.10, from 9.0.0 through 9.2.4. Users can set a new setting (proxy.config.http.drop_chunked_trailers) not to forward chunked trailer section. Users are recommended to upgrade to version 8.1.11 or 9.2.5, which fixes the issue.

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

0.97%

57.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Apache	Traffic Server	>= 8.0.0, < 8.1.11
Apache	Traffic Server	>= 9.0.0, < 9.2.5

References

https://lists.apache.org/thread/c4mcmpblgl8kkmyt56t23543gp8v56m0Mailing List, Vendor Advisory
https://lists.apache.org/thread/c4mcmpblgl8kkmyt56t23543gp8v56m0Mailing List, Vendor Advisory
https://lists.debian.org/debian-lts-announce/2024/09/msg00040.html

Timeline

Published: Jul 26, 2024
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2024-35161?

How severe is CVE-2024-35161?

CVE-2024-35161 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.97% probability of exploitation in the next 30 days.

How do I fix CVE-2024-35161?

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-2024-35161?

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

Scan your code now

Source: NVD / NIST