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CVE-2026-8633 is a CWE-94 code-injection vulnerability in IBM Web Server Plug-ins used with WebSphere Application Server and WebSphere Liberty. A remote attacker can send a specially crafted HTTP request to the plug-in and trigger remote code execution. The affected component operates at the front-end web-server tier, routing inbound traffic to back-end WebSphere instances. Affected deployments use vulnerable 8.5 or 9.0 Web Server Plug-ins versions.
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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.
21 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A critical unauthenticated remote code execution vulnerability in IBM WebSphere Web Server Plug-ins affecting WebSphere Application Server and WebSphere Liberty deployments, exploitable via specially crafted HTTP requests.
A reported vulnerability in IBM Web Server Plug-ins for WebSphere Application Server.
A remote code execution vulnerability in Web Server Plug-ins mentioned only as broader background.
A critical remote code execution vulnerability in Web Server Plug-ins for WebSphere Application Server 8.5 and 9.0, mentioned as part of vendor security history.
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.