CVE-2018-8040 json
Pages that are rendered using the ESI plugin can have access to the cookie header when the plugin is configured not to allow access.
published 2018-08-29 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-19724
- cvss
- 5.3
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 7.2%
- EPSS 7.2% chance of exploitation in 30 days, percentile 94%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- trafficserver Debian 12 7.1.4+ds-1
debian advisories DEBIAN-CVE-2018-8040
- github.com/apache/trafficserver#3926 pull request
Exploit prediction
7.17% chance of exploitation in the next 30 days, higher than 94% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 5.3 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:N/I:P/A:N |
Affected products
- Apache Software Foundation Apache Traffic Server
Classification
- Weakness
-
- CWE-668 Exposure of Resource to Wrong Sphere
References
-
github.com
/apache/trafficserver/pull/3926
patch, third-party-advisory
-
debian.org
/security/2018/dsa-4282
vendor-advisory, third-party-advisory
-
lists.apache.org
/thread.html/cc7aa2ce1c6f4fe0c6bfef517763cdaad30ec7bcb0115b73f73f3c01%40%3Cusers.trafficserver.apache.org%3E
mailing-list
-
lists.apache.org
/thread.html/36b3df68fe7311965f6bc4630ca413d2aa99d8f1d53affda85ea70d7%40%3Cusers.trafficserver.apache.org%3E
mailing-list
-
securityfocus.com
/bid/105181
vdb-entry, third-party-advisory
Sources
- CVE List CVE-2018-8040
- NVD CVE-2018-8040
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.