CVE-2026-33006
published 2026-05-04CVE-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…
PriorityP430medium4.8CVSS 3.1
AVNACHPRNUINSUCLILAN
EPSS
0.56%
43.1th percentile
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
5 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| apache | http_server | < 2.4.67 | 2.4.67 |
| apache | httpd | — | — |
| apache_software_foundation | apache_http_server | <= 2.4.66 | — |
| httpd_2.4 | httpd | — | — |
| ubuntu | apache2 | — | — |
CVSS provenance
nvdv3.14.8MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
vendor_ubuntu9.8CRITICAL
vendor_redhat4.8MEDIUM
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Ubuntu
Apache HTTP Server vulnerabilities
vendor_ubuntu·2026-07-22·CVSS 9.8
CVE-2026-29167 [CRITICAL] Apache HTTP Server vulnerabilities
Title: Apache HTTP Server vulnerabilities
Summary: Several security issues were fixed in Apache HTTP Server.
It was discovered that Apache HTTP Server's mod_ldap module incorrectly
handled memory when processing per-directory configurations. A remote
attacker could possibly use this issue to cause a denial of service or
execute arbitrary code. (CVE-2026-29167)
It was discovered that Apache HTTP Server's mod_proxy_ftp module
incorrectly handled HTML generation for FTP directory listings. A remote
attacker could possibly use this issue to inject arbitrary web script or
HTML. (CVE-2026-29170)
Nitescu Lucian discovered that Apache HTTP Server's mod_auth_digest module
was vulnerable to a timing attack. A remote attacker could possibly use
this issue to bypass Digest authentication. (CVE-202
Ubuntu
Apache HTTP Server vulnerabilities
vendor_ubuntu·2026-05-06·CVSS 8.8
CVE-2026-28780 [HIGH] Apache HTTP Server vulnerabilities
Title: Apache HTTP Server vulnerabilities
Summary: Several security issues were fixed in Apache HTTP Server.
Bartlomiej Dmitruk and Stanislaw Strzalkowski discovered that Apache
HTTP Server incorrectly handled certain memory operations when using the
HTTP/2 protocol. A remote attacker could use this issue to cause Apache
HTTP Server to crash, resulting in a denial of service, or possibly execute
arbitrary code. This issue only affected Ubuntu 26.04 LTS.
(CVE-2026-23918)
It was discovered that the Apache HTTP Server mod_rewrite module
incorrectly handled certain privileges. A local attacker could possibly use
this issue to obtain sensitive information. (CVE-2026-24072)
Andrew Lacambra, Elhanan Haenel, Tianshuo Han, and Tristan Madani
discovered that the Apache HTTP Server mod_proxy_ajp
Red Hat
httpd: mod_auth_digest: timing attack allows a bypass of digest authentication
vendor_redhat·2026-05-04·CVSS 4.8
CVE-2026-33006 [MEDIUM] CWE-208 httpd: mod_auth_digest: timing attack allows a bypass of digest authentication
httpd: mod_auth_digest: timing attack allows a bypass of digest authentication
A flaw was found in the mod_auth_digest module of httpd. A remote unauthenticated attacker can bypass digest authentication by measuring timing discrepancies of requests. This issue leads to unauthorized access to resources protected by digest authentication.
Statement: To exploit this vulnerability, an attacker needs to send a high volume of specific requests to the server. These payloads are used to trigger the vulnerable and non-constant-time code path to perform statistical analysis on the resulting timing variations, increasing the complexity of exploitation. The primary security impact of this issue is the unauthorized access to resources protected by digest authentication. Due to these reasons, this fla
GHSA
GHSA-r3x7-65m7-5p92: A timing attack against mod_auth_digest in Apache HTTP Server 2
ghsa_unreviewed·2026-05-04
CVE-2026-33006 [MEDIUM] CWE-208 GHSA-r3x7-65m7-5p92: A timing attack against mod_auth_digest in Apache HTTP Server 2
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.
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2026-33006 httpd: timing attack allows a bypass of digest authentication [fedora-all]
bugzilla·2026-05-12·CVSS 4.8
CVE-2026-33006 [MEDIUM] CVE-2026-33006 httpd: timing attack allows a bypass of digest authentication [fedora-all]
CVE-2026-33006 httpd: timing attack allows a bypass of digest authentication [fedora-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
Bugzilla
CVE-2026-33006 httpd: mod_auth_digest: timing attack allows a bypass of digest authentication
bugzilla·2026-05-04·CVSS 4.8
CVE-2026-33006 [MEDIUM] CVE-2026-33006 httpd: mod_auth_digest: timing attack allows a bypass of digest authentication
CVE-2026-33006 httpd: mod_auth_digest: timing attack allows a bypass of digest authentication
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.
Rapid7
Patch Tuesday - May 2026
blogs_rapid7·2026-05-13·CVSS 10.0
CVE-2026-41089 [CRITICAL] Patch Tuesday - May 2026
Microsoft is publishing 137 vulnerabilities on May 2026 Patch Tuesday . Microsoft is not aware of exploitation in the wild or public disclosure for any of these vulnerabilities. So far this month, Microsoft has provided patches to address 133 browser vulnerabilities, which are not included in the Patch Tuesday count above.
## Windows Netlogon: critical RCE
Anyone responsible for securing a domain controller should prioritize remediation of CVE-2026-41089 , which is a critical stack-based buffer overflow in Windows Netlogon with a CVSS v3 base score of 9.8. Exploitation leads to execution in the context of the Netlogon service, so that’s SYSTEM privileges on the domain controller. For most pentesters, that’s the point at which the customer report more or less writes itself. No privileges
2026-05-04
Published