Loading vulnerability…
CVE-2026-68763 is an uncontrolled resource consumption vulnerability in Apache Tomcat's HTTP/2 backlog tracking. Resetting an HTTP/2 stream leaks an allocation rather than releasing it. Repeated triggering can progressively consume server resources and result in denial of service. Affected releases are Tomcat 11.0.0-M1 through 11.0.24, 10.1.0-M1 through 10.1.57, and 9.0.39 through 9.0.120. End-of-life Tomcat 8.5.59 through 8.5.100 is also known to be affected; other unsupported releases may be affected.
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.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
13 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
An uncontrolled-resource-consumption vulnerability in Apache Tomcat. Fixed by upgrading to 9.0.121 or later, 10.1.59 or later, or 11.0.25 or later.
An important Apache Tomcat HTTP/2 denial-of-service vulnerability caused by an allocation leak during reset-stream backlog tracking.
An Apache Tomcat HTTP/2 denial-of-service vulnerability caused by an allocation leak during backlog tracking for reset streams.
An uncontrolled resource-consumption vulnerability in Apache Tomcat caused by an allocation leak in HTTP/2 backlog tracking when a stream is reset. It affects Tomcat 11.0.0-M1 through 11.0.24, 10.1.0-M1 through 10.1.57, 9.0.39 through 9.0.120, and known affected EOL 8.5.59 through 8.5.100 releases.
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.