CVE-2021-38161 json
Not validating origin TLS certificate
published 2021-11-03 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-24631
- cvss
- 8.1
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.9%
- EPSS 1.9% chance of exploitation in 30 days, percentile 80%
- public exploits
- 0
- none known
Summary
Improper Authentication vulnerability in TLS origin verification of Apache Traffic Server allows for man in the middle attacks. This issue affects Apache Traffic Server 8.0.0 to 8.0.8.
Patch / fix
- trafficserver Debian 12 9.1.0+ds-1
debian advisories DEBIAN-CVE-2021-38161
Exploit prediction
1.95% chance of exploitation in the next 30 days, higher than 80% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 8.1 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 6.8 | AV:N/AC:M/Au:N/C:P/I:P/A:P |
Affected products
- Apache Software Foundation Apache Traffic Server
Classification
- Weakness
-
- CWE-287 Improper Authentication
References
-
lists.apache.org
/thread/k01797hyncx53659wr3o72s5cvkc3164
mailing-list, patch, vendor-advisory
-
debian.org
/security/2022/dsa-5153
vendor-advisory, third-party-advisory
Sources
- CVE List CVE-2021-38161
- NVD CVE-2021-38161
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.