CVE-2026-8947
CVE-2026-8947: 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-2026-8947] Use-after-free in the DOM: Bindings (WebIDL) component
CVE-2026-8947Source published
Use-after-free in the DOM: Bindings (WebIDL) component. Red Hat rates this important (CVSS 7.5). Weakness: CWE-825. Affected package(s): thunderbird, firefox. Resolved in Red Hat advisory RHSA-2026:26551 — update the affected packages (`sudo dnf update`).
- Affected products in this advisory
- Red Hat Enterprise Linux 10.0 Extended Update Support
- Red Hat Enterprise Linux 7 Extended Lifecycle Support
- Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
- Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On
7 more entries in the full advisory.
- Source-reported affected versions
- thunderbird-0:140.11.0-1.el8_8
- firefox-0:140.11.0-1.el9_4
- firefox-0:140.11.0-1.el8_4
- thunderbird-0:140.11.0-1.el9_8
8 more entries in the full advisory.
- Source-reported fixed versions
- RHSA-2026:26551
- Mitigation guidance
- Update the affected package(s) to the fixed version shipped in RHSA-2026:26551 (`sudo dnf update` / `yum update`).
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