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Vulnerability record · CVE-2018-8040 · published 29 August 2018

CVE-2018-8040: Apache traffic server exposure of resource to wrong sphere vulnerability

Apache · Traffic Server

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.

5.3 CVSS 3.0 Medium EPSS 7.2% · top 5.9% CWE-668 · Exposure of resource to wrong sphere
5.3CVSS 3.0 base score, v2 5.0
7.2%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
10References
17 Jun 2026Last modified by NVD

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.

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

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

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Source: NIST National Vulnerability Database (record CVE-2018-8040), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.