Loading vulnerability…
CVE-2026-73637 is a use-after-free vulnerability in Apache HTTP Server's mod_auth_digest module affecting versions 2.4.0 through 2.4.68 on all platforms. When AuthDigestNcCheck is enabled or AuthDigestNonceLifetime is set to 0, an unauthenticated remote client can trigger authentication-state corruption through concurrent Digest authentication requests. The flaw can cause denial of service. Apache HTTP Server 2.4.69 fixes the vulnerability.
Mallory correlates every CVE against your assets, your vendors, and active adversary campaigns. Know which vulnerabilities matter for you, not just which ones are loud.
What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
If you can’t patch tonight, do this now.
Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
10 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A use-after-free vulnerability in Apache HTTP Server. The advisory lists versions 2.4.0 through versions before 2.4.69 as affected and recommends upgrading to 2.4.69 or later.
Unknown
A race condition in Apache mod_auth_digest that corrupts shared authentication state under concurrency.
Listed as an Apache HTTP Server vulnerability covered by the Nessus plugin. Flaw-specific technical details are not provided.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.