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CVE-2023-38709
Apache HTTP Server: HTTP response splitting
High7.3EPSS 3.9%
- Published
- Updated
- Reserved
- Assigned by
- apache
Description
Faulty input validation in the core of Apache allows malicious or exploitable backend/content generators to split HTTP responses. This issue affects Apache HTTP Server: through 2.4.58.
Timeline
ID reserved
By apache
- 9 months later
· 9 months later
Published
- 19 months later
· 19 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 | High7.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L |
| NVDNVD · Modified | 3.1 | High7.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L |
- EPSS (exploitation in 30 days)
- 3.9% · top 9.6% of all CVEs (7 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.3.
Weakness
Affected products
Apache Software Foundation · Apache HTTP Server
- affected ≤ 2.4.58
References (11)
- https://httpd.apache.org/security/vulnerabilities_24.html (opens in a new tab)vendor-advisoryx_transferred
- https://security.netapp.com/advisory/ntap-20240415-0013/ (opens in a new tab)x_transferred
- https://lists.fedoraproject.org/archives/list/[email protected]/message/WNV4SZAPVS43DZWNFU7XBYYOZEZMI4ZC/ (opens in a new tab)x_transferred
- http://www.openwall.com/lists/oss-security/2024/04/04/3 (opens in a new tab)x_transferred
- https://lists.fedoraproject.org/archives/list/[email protected]/message/I2N2NZEX3MR64IWSGL3QGN7KSRUGAEMF/ (opens in a new tab)x_transferred
- https://lists.fedoraproject.org/archives/list/[email protected]/message/LX5U34KYGDYPRH3AJ6MDDCBJDWDPXNVJ/ (opens in a new tab)x_transferred
- https://lists.debian.org/debian-lts-announce/2024/05/msg00013.html (opens in a new tab)x_transferred
- https://support.apple.com/kb/HT214119 (opens in a new tab)x_transferred
- http://seclists.org/fulldisclosure/2024/Jul/18 (opens in a new tab)x_transferred
- http://www.openwall.com/lists/oss-security/2025/07/10/2 (opens in a new tab)
- http://www.openwall.com/lists/oss-security/2025/07/10/3 (opens in a new tab)
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-2023-38709)Record last updated .