Loading vulnerability…
Apache Tomcat fails to validate HTTP/2 request headers before making them available through the Servlet API. Consequently, a remote client can supply HTTP/2 header values that do not conform to the HTTP/2 specification, while downstream applications may assume Servlet API headers are syntactically compliant. Affected releases are Tomcat 11.0.0-M1 through 11.0.21, 10.1.0-M1 through 10.1.54, 9.0.0.M1 through 9.0.117, and 10.0.0-M1 through 10.0.27; unsupported older versions may also 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 valid public exploits. Mallory filtered out 1 candidate as fakes, detection scripts, or README-only repos.
All candidate exploits were filtered out by Mallory's validation.
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.
72 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A previously fixed vulnerability referenced only as the source of a regression that led to CVE-2026-86350; no technical details are provided.
A previously fixed vulnerability whose remediation introduced the CVE-2026-86350 regression; no further technical details are provided.
A previously fixed Apache Tomcat vulnerability referenced as the source of a regression; no further technical details are provided.
A vulnerability addressed by the Miracle Linux AXSA-2026-1899 advisory; no technical flaw details are 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.