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CVE-2026-100792 is a JIT miscompilation vulnerability in the JavaScript: WebAssembly component of Mozilla Firefox and Firefox ESR. It is fixed in Firefox 157, Firefox ESR 153.4, and Firefox ESR 140.17.
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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.
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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.
A critical-severity, remotely exploitable vulnerability identified as CVE-2026-100792. The supplied CVSS v3 vector indicates network-based exploitation requiring no privileges or user interaction, with high confidentiality, integrity, and availability impact. The notice identifies Debian Linux 12.0, 13.0, and 14.0, and Debian's firefox-esr package, as affected associations, but does not describe the underlying flaw type.
A JIT miscompilation vulnerability in Firefox's JavaScript: WebAssembly component.
A vulnerability addressed by a Slackware Mozilla Firefox package update; no technical vulnerability details are provided.
A Mozilla Firefox ESR vulnerability referenced by the plugin; no technical 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.