What’s Vulnerable › Vulnerabilities

CVE-2022-45410

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-12-22 · updated 2026-06-17
• Weakness: CWE-862

Description

When a ServiceWorker intercepted a request with <code>FetchEvent</code>, the origin of the request was lost after the ServiceWorker took ownership of it. This had the effect of negating SameSite cookie protections. This was addressed in the spec and then in browsers. This vulnerability affects Firefox ESR < 102.5, Thunderbird < 102.5, and Firefox < 107.

Affected products

• Mozilla Firefox: before 107.0 — fixed in 107.0
• Mozilla Firefox ESR: before 102.5 — fixed in 102.5
• Mozilla Thunderbird: before 102.5 — fixed in 102.5

How to fix

Upgrade to a fixed version: Mozilla Firefox 107.0; Mozilla Firefox ESR 102.5; Mozilla Thunderbird 102.5. Check the vendor advisory for mitigations.

References

• https://bugzilla.mozilla.org/show_bug.cgi?id=1658869
• https://www.mozilla.org/security/advisories/mfsa2022-47/
• https://www.mozilla.org/security/advisories/mfsa2022-48/
• https://www.mozilla.org/security/advisories/mfsa2022-49/
• https://bugzilla.mozilla.org/show_bug.cgi?id=1658869
• https://www.mozilla.org/security/advisories/mfsa2022-47/
• https://www.mozilla.org/security/advisories/mfsa2022-48/
• https://www.mozilla.org/security/advisories/mfsa2022-49/

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