CVE-2018-8040
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…
- 5.3MediumCVSS base score
- 7.2%Exploitation in 30 daysEPSS · top 5.7% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By apache
- 6 months later
· 6 months later
Published
- 6 years later
· 6 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.0 | Medium5.3 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N |
- EPSS (exploitation in 30 days)
- 7.2% · top 5.7% of all CVEs (10 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.3.
Affected products
Apache Software Foundation · Apache Traffic Server
- affected 6.0.0 to 6.2.2
- affected 7.0.0 to 7.1.3
References
5
- https://github.com/apache/trafficserver/pull/3926 (opens in a new tab)x_refsource_CONFIRMx_transferred
- [trafficserver-users] 20180828 [ANNOUNCE] Apache Traffic Server vulnerability with header variable access in the ESI plugin - CVE-2018-8040 (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- [trafficserver-users] 20180828 Re: [ANNOUNCE] Apache Traffic Server vulnerability with header variable access in the ESI plugin - CVE-2018-8040 (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- DSA-4282 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- 105181 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2018-19724 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2018-8040)Record last updated .