Improper Certificate Validation Affecting Firefox package, versions [,158.0.1)
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-FIREFOX-21280615
- published20 Oct 2026
- disclosed20 Oct 2026
- creditUnknown
Introduced: 20 Oct 2026
NewCVE-2026-113470 (opens in a new tab)How to fix?
Upgrade Firefox to version 158.0.1 or higher.
Overview
Affected versions of this package are vulnerable to Improper Certificate Validation due to improper validation in the process responsible for distributing and enforcing certificate block-lists. An attacker can bypass certificate revocation protections by leveraging compromised intermediate certificates if the updated block-list is not properly applied.