CVE Feed

    Dashboard / CVE / CVE-2026-33006

    CVE-2026-33006

    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:May 4, 2026
    Last Modified:May 4, 2026
    EPS:May 4, 2026
    EPSS Score:0.00139
    CVSS Score:4.8

    Affected Products

    Vendor
    Apache
    Product
    Apache Http Server
    Vendor
    Apache
    Product
    Http Server

    Exploits

    https://github.com/SimoesCTT/CTT-enhanced-Apache-mod_auth_digest-timing-attack-exploit

    Common Weakness Enumeration

    CWE-208 Observable Timing Discrepancy

    Related CVEs

    CVE-2026-44631 (CVSS 9.8) — Buffer Underwrite vulnerability in Apache HTTP Server on crafted regular expressions in the configuration. Th…
    CVE-2026-34356 (CVSS 7.5) — Heap-based Buffer Overflow vulnerability in Apache HTTP Server with malicious backend servers and ProxyPassRev…
    CVE-2026-44186 (CVSS 7.3) — Loop with Unreachable Exit Condition ('Infinite Loop') vulnerability in the mod_proxy_ftp module in Apache HTT…
    CVE-2026-33857 (CVSS 5.3) — Out-of-bounds Read vulnerability in mod_proxy_ajp of Apache HTTP Server. This issue affects Apache HTTP Ser…
    CVE-2025-53020 (CVSS 7.5) — Late Release of Memory after Effective Lifetime vulnerability in Apache HTTP Server. This issue affects Apach…
    CVE-2025-49630 (CVSS 7.5) — In certain proxy configurations, a denial of service attack against Apache HTTP Server versions 2.4.26 through…
    CVE-2024-43394 (CVSS 7.5) — Server-Side Request Forgery (SSRF) in Apache HTTP Server on Windows allows to potentially leak NTLM hashes to …
    CVE-2024-47252 (CVSS 7.5) — Insufficient escaping of user-supplied data in mod_ssl in Apache HTTP Server 2.4.63 and earlier allows an untr…
    CVE-2024-42516 (CVSS 7.5) — HTTP response splitting in the core of Apache HTTP Server allows an attacker who can manipulate the Content-Ty…
    CVE-2010-1151 (CVSS 6.8) — Race condition in the mod_auth_shadow module for the Apache HTTP Server allows remote attackers to bypass auth…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High