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TI-2024-26505 Aliases CVE-2024-39573GHSA-2wcw-rcf9-qm36

Apache HTTP Server: mod_rewrite proxy handler substitution

Priority HIGH 65CWE-20Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · None · None
Fix status
Partial Red Hat: 6 fixed, 1 without a fix

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.35447 98th percentileScored 2026-11-07
Fix Partial Red Hat: 5 advisoriesRed Hat: 6 fixed, 1 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
ApacheApache HTTP Server2.4.0 – 2.4.59—No fix listedCNA
  • Apache HTTP Server VendorApache Affected 2.4.0 – 2.4.59 Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*2.4.0 to before 2.4.60VulnerableApache
cpe:2.3:a:netapp:ontap:9:*:*:*:*:*:*:*9VulnerableNetApp
  • cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:* Versions 2.4.0 to before 2.4.60 Vulnerable ·Apache
  • cpe:2.3:a:netapp:ontap:9:*:*:*:*:*:*:* Versions 9 Vulnerable ·NetApp

Remediation

Red Hat 5 advisories

  • RHSA-2024:5239 Released 2024-08-13 · Red Hat rating Important
    Red Hat JBoss Core Services Apache HTTP Server 2.4.57 SP5 security update
    • Red Hat JBoss Core Services on RHEL 7 Server jbcs-httpd24-httpd-2.4.57-13.el7jbcs, jbcs-httpd24-httpd-devel-2.4.57-13.el7jbcs, jbcs-httpd24-httpd-manual-2.4.57-13.el7jbcs +12
    • Red Hat JBoss Core Services on RHEL 8 jbcs-httpd24-httpd-2.4.57-13.el8jbcs, jbcs-httpd24-httpd-devel-2.4.57-13.el8jbcs, jbcs-httpd24-httpd-manual-2.4.57-13.el8jbcs +12
  • RHSA-2024:5240 Released 2024-08-13 · Red Hat rating Important
    Red Hat JBoss Core Services Apache HTTP Server 2.4.57 SP5 security update
    • Red Hat JBoss Core Services
  • RHSA-2024:5001 Released 2024-08-06 · Red Hat rating Moderate
    httpd security update
    • Red Hat Enterprise Linux AppStream EUS (v.9.2) httpd-2.4.53-11.el9_2.10, httpd-core-2.4.53-11.el9_2.10, httpd-devel-2.4.53-11.el9_2.10 +8
Show 2 more Red Hat advisories
  • RHSA-2024:4726 Released 2024-07-23 · Red Hat rating Important
    httpd security update
    • Red Hat Enterprise Linux AppStream (v. 9) httpd-2.4.57-11.el9_4, httpd-core-2.4.57-11.el9_4, httpd-devel-2.4.57-11.el9_4 +8
  • RHSA-2024:4720 Released 2024-07-23 · Red Hat rating Important
    httpd:2.4 security update
    • Red Hat Enterprise Linux AppStream (v. 8) httpd-2.4.37-65.module+el8.10.0+22069+b47f5c72.1.aarch64::httpd:2.4, httpd-2.4.37-65.module+el8.10.0+22069+b47f5c72.1.ppc64le::httpd:2.4, httpd-2.4.37-65.module+el8.10.0+22069+b47f5c72.1.s390x::httpd:2.4 +38

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 7AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux AppStream (v. 8)Fixed RHSA-2024:4720
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2024:4726
Red Hat Enterprise Linux AppStream EUS (v.9.2)Fixed RHSA-2024:5001
Red Hat JBoss Core ServicesFixed RHSA-2024:5240
Red Hat JBoss Core Services on RHEL 7 ServerFixed RHSA-2024:5239
Red Hat JBoss Core Services on RHEL 8Fixed RHSA-2024:5239
Not affected: 2 products
  • Red Hat Enterprise Linux 10
  • Red Hat Enterprise Linux 6

Timeline

  1. 2026-10-02 Threatist record created from CVE-2024-39573
  2. 2026-10-03 Alias added: GHSA-2wcw-rcf9-qm36
  3. 2026-10-09 Fix available: RHSA-2024:5240 · Red Hat
  4. 2026-11-05 Fix available: Red Hat JBoss Core Services · Red Hat

References

Advisory 2

  • TI-2021-18535 Path Traversal and Remote Code Execution in Apache HTTP Server 2.4.49 and 2.4.50 (incomplete fix of CVE-2021-41773) KEVCVSS 3.1CRITICAL 9.8
  • TI-2021-18417 Path traversal and file disclosure vulnerability in Apache HTTP Server 2.4.49 KEVCVSS 3.1CRITICAL 9.8
  • TI-2024-25716 Apache HTTP Server weakness in mod_rewrite when first segment of substitution matches filesystem path. KEVCVSS 3.1CRITICAL 9.1
  • TI-2021-17490 mod_proxy SSRF KEVCVSS 3.1CRITICAL 9.0
  • TI-2019-00184 Use after free in Apache HTTP Server KEVCVSS 3.1HIGH 7.8
  • TI-2009-03392 The TLS protocol, and the SSL protocol 3.0 and possibly earlier, as used in Microsoft… CVSS 3.1CRITICAL 9.8
See all 349 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences