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TI-2026-25454 Aliases CVE-2026-33006GHSA-r3x7-65m7-5p92

Apache HTTP Server: mod_auth_digest timing attack

Priority LOW 23CWE-208Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Impact type
Information disclosure
Confidentiality · integrity · availability
Low · Low · None
Fix status
Partial Red Hat: 7 fixed, 2 without a fix

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat. Impact type from CWE-208.

Summary

A timing attack against mod_auth_digest in Apache HTTP Server 2.4.66 allows a bypass of Digest authentication by a remote attacker. Users are recommended to upgrade to version 2.4.67, which fixes this issue.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00557 46th percentileScored 2026-11-07
Fix Partial Red Hat: 7 advisoriesRed Hat: 7 fixed, 2 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
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 Serverup to 2.4.66—No fix listedCNA
  • Apache HTTP Server VendorApache Affected up to 2.4.66 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*before 2.4.67VulnerableApache
  • cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:* Versions before 2.4.67 Vulnerable ·Apache

Remediation

Red Hat 7 advisories

  • RHSA-2026:92616 Released 2026-10-29 · Red Hat rating Important
    httpd:2.4 security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream (v. 8) httpd-2.4.37-65.module+el8.10.0+25092+6f3ea0dd.13.aarch64::httpd:2.4, httpd-2.4.37-65.module+el8.10.0+25092+6f3ea0dd.13.ppc64le::httpd:2.4, httpd-2.4.37-65.module+el8.10.0+25092+6f3ea0dd.13.s390x::httpd:2.4 +38
  • RHSA-2026:73076 Released 2026-09-29 · Red Hat rating Moderate
    Red Hat JBoss Core Services Apache HTTP Server 2.4.62 SP6 security update
    • Red Hat JBoss Core Services on RHEL 8 jbcs-httpd24-httpd-2.4.62-17.el8jbcs, jbcs-httpd24-httpd-devel-2.4.62-17.el8jbcs, jbcs-httpd24-httpd-manual-2.4.62-17.el8jbcs +12
  • RHSA-2026:73077 Released 2026-09-29 · Red Hat rating Moderate
    Red Hat JBoss Core Services Apache HTTP Server 2.4.62 SP6 security update
    • Red Hat JBoss Core Services 2.4.62.SP6
Show 4 more Red Hat advisories
  • RHSA-2026:53371 Released 2026-08-11 · Red Hat rating Important
    Insights proxy Container Image
    • Red Hat Insights proxy 1.5 registry.redhat.io/insights-proxy/insights-proxy-container-rhel9
  • RHSA-2026:41906 Released 2026-07-20 · Red Hat rating Important
    httpd security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream (v. 9) httpd-2.4.62-13.el9_8.5, httpd-core-2.4.62-13.el9_8.5, httpd-devel-2.4.62-13.el9_8.5 +8
  • RHSA-2026:34109 Released 2026-07-01 · Red Hat rating Important
    httpd security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream (v. 10) httpd-2.4.63-13.el10_2.4, httpd-core-2.4.63-13.el10_2.4, httpd-devel-2.4.63-13.el10_2.4 +8
  • RHSA-2026:17080 Released 2026-05-13 · Red Hat rating Moderate
    Red Hat Hardened Images RPMs bug fix and enhancement update
    • Red Hat Hardened Images httpd-2.4.67-1.hum1@aarch64, httpd-2.4.67-1.hum1@src, httpd-2.4.67-1.hum1@x86_64 +10

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux 6AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux 7AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux AppStream (v. 10)Fixed RHSA-2026:34109
Red Hat Enterprise Linux AppStream (v. 8)Fixed RHSA-2026:92616
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2026:41906
Red Hat Hardened ImagesFixed RHSA-2026:17080
Red Hat Insights proxy 1.5Fixed RHSA-2026:53371
Red Hat JBoss Core Services 2.4.62.SP6Fixed RHSA-2026:73077
Red Hat JBoss Core Services on RHEL 8Fixed RHSA-2026:73076
Not affected: 1 product
  • Red Hat Hardened Images

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-33006
  2. 2026-10-03 Alias added: GHSA-r3x7-65m7-5p92
  3. 2026-10-30 Fix available: RHSA-2026:92616 · Red Hat
  4. 2026-10-30 Fix available: Red Hat Enterprise Linux AppStream (v. 8) · 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