CVE-2026-33006

MEDIUMNVD 4.84.8—Trending — 4 sources updated this week

4.8

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.

CVSS v3: 4.8
EG Score: 4.8(high)
EPSS: 41.0%
KEV: Not listed

Published

May 4, 2026

Last Modified

May 4, 2026

Advisory Details (2)

Auto-updated May 4, 2026

⚠️ Active exploitation confirmed. Patch available.

generic

oss-security - CVE-2026-33006: Apache HTTP Server: mod_auth_digest timing attack

http://www.openwall.com/lists/oss-security/2026/05/04/21

generic Patch Available🔴 Active Exploitation

Apache HTTP Server 2.4 vulnerabilities - The Apache HTTP Server Project

https://httpd.apache.org/security/vulnerabilities_24.html

Vendor Advisories for CVE-2026-33006(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

CVE-2026-33006
Microsoft Security Response Center (MSRC)Medium
Apache HTTP Server: mod_auth_digest timing attack

Patch Availability(2)

Vendor / Ecosystem	Fixed in / Patch	Released	Source
ubuntu	libapache2-mod-proxy-uwsgi (2.4.52-1ubuntu4.20) @ jammy	2026-06-03	ubuntu
redhat	httpd-main-2.4.67-1.hum1	2026-05-13	redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-208

Additional Vendor Advisories

(2)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 20× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-03 10:34 UTCEG score recompute
2026-06-03 10:34 UTCVendor advisory
2026-06-03 10:34 UTCGHSA enrichment
2026-06-02 20:13 UTCepss_batch
2026-06-02 10:19 UTCEG score recompute
2026-06-02 10:19 UTCVendor advisory
2026-06-02 10:19 UTCGHSA enrichment
2026-06-01 13:52 UTCepss_batch
2026-06-01 13:52 UTCepss_batch
2026-06-01 13:51 UTCepss_batch
2026-06-01 10:03 UTCEG score recompute
2026-06-01 10:03 UTCVendor advisory
2026-06-01 10:03 UTCGHSA enrichment
2026-05-31 22:30 UTCepss_batch
2026-05-31 22:30 UTCepss_batch
2026-05-31 00:16 UTCepss_batch
2026-05-31 00:16 UTCepss_batch
2026-05-31 00:16 UTCepss_batch
2026-05-29 13:44 UTCepss_batch
2026-05-29 13:44 UTCepss_batch

Frequently asked(5)

What is CVE-2026-33006?

CVE-2026-33006 is a medium vulnerability published on May 4, 2026. A timing attack against modauthdigest 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.

When was CVE-2026-33006 disclosed?

CVE-2026-33006 was first published in the National Vulnerability Database on May 4, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2026-33006 actively exploited?

CVE-2026-33006 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 41.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2026-33006?

CVE-2026-33006 has a CVSS v3 base score of 4.8 (NVD).

How do I remediate CVE-2026-33006?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-33006, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-33006

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