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CVE-2023-38709

Apache HTTP Server: HTTP response splitting

HIGH
7.3
CVSS Score
Published: April 4, 2024 at 07:19 PM UTC
Updated: June 17, 2026 at 06:10 AM UTC
7 products affected across 6 vendorsmacOSDebian LinuxFedora

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Severity
HIGH7.3
Exploit prediction
EPSS 4%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

HTTP Server· Apache
95%
v ≤ 2.4.58v < 2.4.59
Affected range stops below 2.4.59, so it looks safe — our inference, not a vendor statement
macOS· Apple
95%
v < 14.6
Affected range stops below 14.6, so it looks safe — our inference, not a vendor statement
Fabric Operating System· Broadcom
95%
All versions
Debian Linux· Debiandrupal
95%
10.0
Fedora· Fedora Projectrpm
95%
383940
Ontap· NetApp
95%
9
Ontap Tools· NetApp
95%
10

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (11)

Mailing ListThird Party Advisory
Source: [email protected]
http://seclists.org/fulldisclosure/2024/Jul/18
Mailing ListThird Party Advisory
Source: [email protected]
http://www.openwall.com/lists/oss-security/2024/04/04/3
Vendor Advisory
Source: [email protected]
https://httpd.apache.org/security/vulnerabilities_24.html
Mailing ListThird Party Advisory
Source: [email protected]
https://lists.debian.org/debian-lts-announce/2024/05/msg00013.html
Mailing ListThird Party Advisory
Source: [email protected]
https://lists.fedoraproject.org/archives/list/[email protected]/message/I2N2NZEX3MR64IWSGL3QGN7KSRUGAEMF/
Mailing ListThird Party Advisory
Source: [email protected]
https://lists.fedoraproject.org/archives/list/[email protected]/message/LX5U34KYGDYPRH3AJ6MDDCBJDWDPXNVJ/
Mailing ListThird Party Advisory
Source: [email protected]
https://lists.fedoraproject.org/archives/list/[email protected]/message/WNV4SZAPVS43DZWNFU7XBYYOZEZMI4ZC/
Third Party Advisory
Source: [email protected]
https://security.netapp.com/advisory/ntap-20240415-0013/

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.3HIGHCISA-ADP
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
LOW
Availability
LOW
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-1284

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