CVE-2026-12299
CVE-2026-12299: 1 tracked advisory record across Red Hat. Compare vendor sources and published fix guidance.
Compare the source-linked records below. Ratings and product/version details belong to each advisory; they are not a single CVE-wide score or proof that every listed product is affected. How VulniPulse collects and checks evidence.
Vendor advisory comparison
Red Hat
1 advisory- Advisory severityHigh7.5
High [CVE-2026-12299] JIT miscompilation in the DOM: Core & HTML component
CVE-2026-12299Source published
JIT miscompilation in the DOM: Core & HTML component. Red Hat rates this important (CVSS 7.5). Weakness: CWE-733. Affected package(s): firefox, thunderbird. Resolved in Red Hat advisory RHSA-2026:29940 — update the affected packages (`sudo dnf update`).
- Affected products in this advisory
- Red Hat Enterprise Linux Server (v. 7 ELS)
- Red Hat Enterprise Linux AppStream EUS (v. 10.0)
- Red Hat Enterprise Linux AppStream (v. 10)
- Red Hat Enterprise Linux AppStream (v. 8)
22 more entries in the full advisory.
- Source-reported affected versions
- firefox-0:140.12.0-1.el9_8
- firefox-0:140.12.0-1.el8_10
- thunderbird-0:140.12.0-1.el8_10
- firefox-0:140.12.0-1.el10_2
2 more entries in the full advisory.
- Source-reported fixed versions
- RHSA-2026:29940
- Mitigation guidance
- Update the affected package(s) to the fixed version shipped in RHSA-2026:29940 (`sudo dnf update` / `yum update`).
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