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CVE-2024-39573

Apache HTTP Server: mod_rewrite proxy handler substitution

HIGH
7.5
CVSS Score
Published: July 1, 2024 at 06:16 PM UTC
Updated: June 17, 2026 at 07:42 AM UTC
2 products affected across 2 vendorsHTTP ServerOntap

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Severity
HIGH7.5
Exploit prediction
EPSS 35%
SSVC
No known exploit

Description

Potential SSRF in mod_rewrite in Apache HTTP Server 2.4.59 and earlier allows an attacker to cause unsafe RewriteRules to unexpectedly setup URL's to be handled by mod_proxy. Users are recommended to upgrade to version 2.4.60, which fixes this issue.

Affected

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

HTTP Server· Apache
95%
2.4.0 ≤ v ≤ 2.4.592.4.0
Affected range stops below 2.4.60, so it looks safe — our inference, not a vendor statement
Ontap· NetApp
95%
9

Remediation

No guide yet

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

Patch and advisory references

References (4)

Vendor Advisory
Source: [email protected]
https://httpd.apache.org/security/vulnerabilities_24.html
Third Party Advisory
Source: [email protected]
https://security.netapp.com/advisory/ntap-20240712-0001/
Mailing List
Source: af854a3a-2127-422b-91ae-364da2661108
http://www.openwall.com/lists/oss-security/2024/07/01/11
Source: af854a3a-2127-422b-91ae-364da2661108
http://seclists.org/fulldisclosure/2024/Oct/11

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

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

CVSS

7.5HIGHCISA-ADP
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-20

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