CVE-2026-73636
CVE-2026-73636: 2 tracked advisory records across Apache, Red Hat. Compare vendor sources and published fix guidance.
Compare the source-linked records below. Ratings and product/version details belong to each advisory; they are not a single CVE-wide score or proof that every listed product is affected. How VulniPulse collects and checks evidence.
Vendor advisory comparison
Apache
1 advisory- Advisory severityHigh8.1
High [CVE-2026-73636] Authentication bypass by capture-replay in mod_auth_digest in Apache Software Foundation Apache HTTP Server 2.4.x on all platforms allows a man-in-the-middle (MITM) attacker to replay captured digest authentication credentials via crafted requests that trigger garbage collection of the client's shared memory entry when AuthDigestNonceLifetime is set to 0
CVE-2026-73636Source published Source updated
Authentication bypass by capture-replay in mod_auth_digest in Apache Software Foundation Apache HTTP Server 2.4.x on all platforms allows a man-in-the-middle (MITM) attacker to replay captured digest authentication credentials via crafted requests that trigger garbage collection of the client's shared memory entry when AuthDigestNonceLifetime is set to 0. Users are recommended to upgrade to version 2.4.69, which fixes this issue.
- Related products — impact not confirmed
- Apache HTTP Server
- Source-reported affected versions
- Apache HTTP Server 2.4.0 through 2.4.68
- Source-reported fixed versions
- 2.4.69
- Mitigation guidance
- Users are recommended to upgrade to version 2.4.69, which fixes this issue.
Red Hat
1 advisory- Advisory severityHigh8.1
High [CVE-2026-73636] Authentication bypass via credential replay in mod_auth_digest
CVE-2026-73636Source published Source updated
Authentication bypass via credential replay in mod_auth_digest. Red Hat rates this important (CVSS 8.1). Weakness: CWE-294. Red Hat lists fixing advisory RHSA-2026:74858 with package httpd-main-2.4.69-1.hum1. Affected products named by the advisory: Red Hat Hardened Images; Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7; and 3 more.
- Related products — impact not confirmed
- Red Hat Hardened Images
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
3 more entries in the full advisory.
- Source-reported affected versions
- Affected-version details not available in this record.
- Source-reported fixed versions
- httpd-main-2.4.69-1.hum1
- RHSA-2026:74858
- Mitigation guidance
- Ensure that `AuthDigestNonceLifetime` is not set to `0`. If digest authentication is not required, disable `mod_auth_digest`. 1. To retain digest authentication with safe settings, set a positive non-zero value (such as the default 300 seconds) or remove the explicit zero setting from `/etc/httpd/conf/httpd.conf` or relevant files in `/etc/httpd/conf.d/`: ``` AuthDigestNonceLifetime 300 ``` 2. If HTTP digest authentication is not needed, disable the module by commenting out the corresponding line in `/etc/httpd/conf.modules.d/00-base.conf`: ``` #LoadModule auth_digest_module modules/mod_auth_digest.so ``` 3. Restart the web server to apply changes: ``` systemctl restart httpd ``` Warning: Restarting or reloading the httpd service will briefly disrupt active client connections. Disabling the module will break authentication for virtual hosts or directories relying on digest authentication.
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