Signed to Unsigned Conversion Error Affecting thunderbird package, versions [,151.0.0)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UNMANAGED-THUNDERBIRD-16769892
- published20 May 2026
- disclosed19 May 2026
- creditInseo An
Introduced: 19 May 2026
CVE-2026-8967 (opens in a new tab)How to fix?
Upgrade thunderbird to version 151.0.0 or higher.
Overview
Affected versions of this package are vulnerable to Signed to Unsigned Conversion Error in the WebGPU process. An attacker can access sensitive information by leveraging crafted web content to trigger unintended data exposure.