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CVE-2026-100794 is a sandbox-escape vulnerability in the Internationalization component of Mozilla Firefox and Firefox ESR caused by incorrect boundary conditions. The vulnerability is fixed in Firefox 157, Firefox ESR 153.4, and Firefox ESR 140.17.
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No public exploit code observed for this vulnerability.
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Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
14 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A critical-severity, network-reachable vulnerability identified as CVE-2026-100794. The supplied scanner metadata associates it with Debian Linux 12.0, 13.0, and 14.0, including Firefox ESR package context, and gives it a CVSS v3 vector of CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
A sandbox-escape vulnerability caused by incorrect boundary conditions in Firefox's Internationalization component.
A Mozilla Firefox vulnerability referenced by the Firefox 157.0 security update; no technical flaw details are supplied.
A vulnerability addressed by a Slackware Mozilla Firefox package update; no technical vulnerability 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.