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CVE-2023-33934
Apache Traffic Server: Differential fuzzing for HTTP request parsing discrepancies
Critical9.1EPSS 1.6%
- Published
- Updated
- Reserved
- Assigned by
- apache
Description
Improper Input Validation vulnerability in Apache Software Foundation Apache Traffic Server.This issue affects Apache Traffic Server: through 9.2.1.
Timeline
ID reserved
By apache
- 3 months later
· 3 months later
Published
- 18 months later
· 18 months 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 |
|---|---|---|---|
| CISA-ADPADP (enrichment) | 3.1 | Critical9.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N |
| NVDNVD · Modified | 3.1 | Critical9.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N |
- EPSS (exploitation in 30 days)
- 1.6% · top 25% of all CVEs (7 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: yes · Technical impact: total
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.1.
Weakness
Affected products
Apache Software Foundation · Apache Traffic Server
- affected ≤ 9.2.1
References (4)
- https://lists.apache.org/thread/jsl6dfdgs1mjjo1mbtyflyjr7xftswhc (opens in a new tab)vendor-advisoryx_transferred
- https://lists.fedoraproject.org/archives/list/[email protected]/message/BOTOM2MFKOLK46Q3BQHO662HTPZFRQUC/ (opens in a new tab)x_transferred
- https://lists.debian.org/debian-lts-announce/2023/09/msg00042.html (opens in a new tab)x_transferred
- https://www.debian.org/security/2023/dsa-5549 (opens in a new tab)x_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)
- 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://trackcve.app/cve/CVE-2023-33934)Record last updated .