Description
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.
Published: 2026-05-04
Score: 4.8 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
Debian DLA Debian DLA DLA-4571-1 [ERRATUM] [DLA 4571-1] apache2 security update
Debian DSA Debian DSA DSA-6248-1 apache2 security update
Ubuntu USN Ubuntu USN USN-8239-1 Apache HTTP Server vulnerabilities
History

Wed, 13 May 2026 00:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

threat_severity

Moderate


Mon, 04 May 2026 20:30:00 +0000

Type Values Removed Values Added
First Time appeared Apache http Server
CPEs cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*
Vendors & Products Apache http Server

Mon, 04 May 2026 19:15:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 4.8, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Mon, 04 May 2026 18:30:00 +0000

Type Values Removed Values Added
References

Mon, 04 May 2026 17:15:00 +0000

Type Values Removed Values Added
First Time appeared Apache
Apache apache Http Server
Vendors & Products Apache
Apache apache Http Server

Mon, 04 May 2026 15:00:00 +0000

Type Values Removed Values Added
Description 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.
Title Apache HTTP Server: mod_auth_digest timing attack
Weaknesses CWE-208
References

Subscriptions

Apache Apache Http Server Http Server
cve-icon MITRE

Status: PUBLISHED

Assigner: apache

Published:

Updated: 2026-05-04T18:23:55.292Z

Reserved: 2026-03-17T16:42:48.946Z

Link: CVE-2026-33006

cve-icon Vulnrichment

Updated: 2026-05-04T17:32:47.129Z

cve-icon NVD

Status : Analyzed

Published: 2026-05-04T15:16:03.977

Modified: 2026-05-04T20:23:31.303

Link: CVE-2026-33006

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-05-04T14:42:03Z

Links: CVE-2026-33006 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-05-04T21:15:06Z

Weaknesses