CVE-2018-8040

Name: CVE-2018-8040
Creator: NVD / NIST
Published: 2018-08-29T13:29:02.2+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 8.59%

Last modified Jun 17, 2026

CVE-2018-8040 is a vulnerability of currently unknown severity. Pages that are rendered using the ESI plugin can have access to the cookie header when the plugin is configured not to allow access. This affects Apache Traffic Server (ATS) versions 6.0.0 to 6.2.2 and 7.0.0 to 7.1.3. EPSS estimates a 8.59% chance of exploitation in the next 30 days.

Description

Pages that are rendered using the ESI plugin can have access to the cookie header when the plugin is configured not to allow access. This affects Apache Traffic Server (ATS) versions 6.0.0 to 6.2.2 and 7.0.0 to 7.1.3. To resolve this issue users running 6.x should upgrade to 6.2.3 or later versions and 7.x users should upgrade to 7.1.4 or later versions.

Metrics

EPSS Probability

8.59%

94.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-668

Affected Software

Vendor	Product	Versions
Apache	Traffic Server	>= 6.0.0, <= 6.2.2
Apache	Traffic Server	>= 7.0.0, <= 7.1.3
Debian	Debian Linux	9.0

References

http://www.securityfocus.com/bid/105181Third Party Advisory, VDB Entry
https://github.com/apache/trafficserver/pull/3926Patch, Third Party Advisory
https://lists.apache.org/thread.html/36b3df68fe7311965f6bc4630ca413d2aa99d8f1d53affda85ea70d7%40%3Cusers.trafficserver.apache.org%3E
https://lists.apache.org/thread.html/cc7aa2ce1c6f4fe0c6bfef517763cdaad30ec7bcb0115b73f73f3c01%40%3Cusers.trafficserver.apache.org%3E
https://www.debian.org/security/2018/dsa-4282Third Party Advisory
http://www.securityfocus.com/bid/105181Third Party Advisory, VDB Entry
https://github.com/apache/trafficserver/pull/3926Patch, Third Party Advisory
https://lists.apache.org/thread.html/36b3df68fe7311965f6bc4630ca413d2aa99d8f1d53affda85ea70d7%40%3Cusers.trafficserver.apache.org%3E
https://lists.apache.org/thread.html/cc7aa2ce1c6f4fe0c6bfef517763cdaad30ec7bcb0115b73f73f3c01%40%3Cusers.trafficserver.apache.org%3E
https://www.debian.org/security/2018/dsa-4282Third Party Advisory

Timeline

Published: Aug 29, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-8040?

How severe is CVE-2018-8040?

Severity scoring for CVE-2018-8040 is pending analysis. The EPSS model estimates a 8.59% probability of exploitation in the next 30 days.

How do I fix CVE-2018-8040?

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-2018-8040?

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

Scan your code now

Source: NVD / NIST