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7.5
CVE-2026-33006EXPLOITEDPATCHED
Apache Software Foundation · Apache HTTP Server

Apache HTTP Server: mod_auth_digest timing attack

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.

Affected Products

VendorProductVersions
Apache Software FoundationApache HTTP Server0

References

  • https://httpd.apache.org/security/vulnerabilities_24.html(vendor-advisory)

Related News (2 articles)

Tier C
oss-security2h ago
CVE-2026-33006: Apache HTTP Server: mod_auth_digest timing attack
→ No new info (linked only)
Tier C
VulDB4h ago
CVE-2026-33006 | Apache HTTP Server up to 2.4.66 mod_auth_digest timing discrepancy
→ No new info (linked only)
CVSS 3.17.5 NONE
CISA KEV❌ No
Actively exploited✅ Yes
Patch available
2.4.67
CWECWE-208
PublishedMay 4, 2026
Last enriched2h agov3
Trending Score51
Source articles2
Independent2
Info Completeness10/14
Missing: epss, kev, iocs, mitre_attack

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Related CVEs (5)

MEDIUMCVE-2026-34032EXP
Apache HTTP Server: mod_proxy_ajp: Heap Buffer Over-Read Due to Missing Null-Termination Check (ajp_msg_get_string)
Trending: 64
NONECVE-2026-24072EXP
Apache HTTP Server: mod_rewrite elevation of privileges via ap_expr
Trending: 51
HIGHCVE-2026-29169
Apache HTTP Server: mod_dav_lock indirect lock crash
Trending: 48
HIGHCVE-2026-34059
Apache HTTP Server: mod_proxy_ajp: Heap Over-Read and memory disclosure in ajp_parse_data()
Trending: 48
MEDIUMCVE-2026-33857
Apache HTTP Server: Off-by-one OOB reads in AJP getter functions
Trending: 44

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Verification

State: verified
Confidence: 0%

Vulnerability Timeline

CVE Published
May 4, 2026
Discovered by ZDM
May 4, 2026
Updated: cvssEstimate
May 4, 2026
Updated: severity, affectedVersions, exploitAvailable, activelyExploited, patchAvailable
May 4, 2026
Actively Exploited
May 4, 2026
Exploit Available
May 4, 2026
Patch Available
May 4, 2026

Version History

v3
Last enriched 2h ago
v3Tier C2h ago

Updated severity to MEDIUM, marked exploit as available, and noted active exploitation.

severityaffectedVersionsexploitAvailableactivelyExploitedpatchAvailable
via oss-security
v2Tier C4h ago

Updated description with more technical detail, changed severity to HIGH, set CVSS estimate to 7.5, and noted that no exploit is available.

cvssEstimate
via VulDB
v14h ago

Initial creation