Canadian Centre for Cyber Security cyber.gc.ca

Mozilla security advisory (AV26-976)

Imported from official source

September 29, 2026 19:17

Cybersecurity Classified by Officially

Serial number: AV26-976
Date: September 29, 2026

As of September 29, 2026, Mozilla is affected by vulnerabilities in the following products:

Firefox ESR
- Versions prior to 153.4
- Versions prior to 140.17
- Versions prior to 115.42
Firefox
- Versions prior to 157

The Cyber Centre encourages users and administrators to review the provided web links and apply any necessary updates as they become available.

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Read the original at the source: https://cyber.gc.ca/en/alerts-advisories/mozilla-security-advisory-av26-976

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Provenance

Organization: Canadian Centre for Cyber Security — imported from official source
Official source: https://www.cyber.gc.ca/api/cccs/rss/v1/get?feed=alerts_advisories&lang=en ATOM
Imported: September 29, 2026 20:00
Versions: 1 recorded
Identity: https://cyber.gc.ca/en/alerts-advisories/mozilla-security-advisory-av26-976