CVE-2022-22760

Name: CVE-2022-22760
Creator: NVD / NIST
Published: 2022-12-22T20:15:19.773+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 0.76%

Last modified Jun 17, 2026

CVE-2022-22760 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. When importing resources using Web Workers, error messages would distinguish the difference between <code>application/javascript</code> responses and non-script responses. This could have been abused to learn information cross-origin. EPSS estimates a 0.76% chance of exploitation in the next 30 days.

Description

When importing resources using Web Workers, error messages would distinguish the difference between <code>application/javascript</code> responses and non-script responses. This could have been abused to learn information cross-origin. This vulnerability affects Firefox < 97, Thunderbird < 91.6, and Firefox ESR < 91.6.

Metrics

CVSS 3.1

6.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

EPSS Probability

0.76%

50.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Mozilla	Firefox	< 97.0
Mozilla	Firefox Esr	< 91.6
Mozilla	Thunderbird	< 91.6

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1740985Issue Tracking, Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1748503Issue Tracking, Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2022-04/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2022-05/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2022-06/Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1740985Issue Tracking, Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1748503Issue Tracking, Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2022-04/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2022-05/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2022-06/Vendor Advisory

Timeline

Published: Dec 22, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-22760?

How severe is CVE-2022-22760?

CVE-2022-22760 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 0.76% probability of exploitation in the next 30 days.

How do I fix CVE-2022-22760?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-22760?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST