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OpenAdvisories
Medium · 4.3 Public exploit CVE-2026-10702 EUVD-2026-33990GHSA-hmrh-mqv8-rvvr

JIT miscompilation in the JavaScript Engine: JIT component

Published Jun 2, 2026 · Updated Jul 15, 2026 · Assigned by mozilla

Vendor: Mozilla Product: Firefox Package: firefox Package: mozjs102 Package: mozjs115 Package: mozjs38 Package: mozjs52 Package: mozjs68 Package: mozjs78 Package: mozjs91 Package: thunderbird Category: Browsers Ecosystem: Ubuntu Ecosystem: Wolfi

Description

JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 151.0.3.

Affected products

VendorProductAffectedFixed
Mozilla Firefox — 151.0.3

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

Ubuntu

Security tracker ↗
ReleasePackageFixed inAdvisory
Ubuntu 24.04 LTS mozjs102 +1 No fix yet —
Ubuntu 22.04 LTS mozjs78 +3 No fix yet —
Ubuntu 20.04 LTS mozjs52 +1 No fix yet —
Ubuntu 18.04 LTS mozjs38 +1 No fix yet —

openSUSE

Security tracker ↗
ReleasePackageFixed inAdvisory
openSUSE Tumbleweed MozillaFirefox 151.0.3-1.1 openSUSE-SU-2026:10977-1
openSUSE Tumbleweed firefox-esr 153.0-1.1 openSUSE-SU-2026:11373-1

Wolfi

ReleasePackageFixed inAdvisory
Wolfi rolling firefox 151.0.4-r0 —

Public exploits

Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.

Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.

GitHub 1 repository

Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.

Advisories 3

References