CVE-2025-13019
HIGHCVSS 8.1/10EPSS 0.22%
Last modified
CVE-2025-13019 is a high-severity vulnerability rated 8.1/10 on the CVSS scale. Same-origin policy bypass in the DOM: Workers component. This vulnerability was fixed in Firefox 145, Firefox ESR 140.5, Thunderbird 145, and Thunderbird 140.5.. EPSS estimates a 0.22% chance of exploitation in the next 30 days.
Description
Same-origin policy bypass in the DOM: Workers component. This vulnerability was fixed in Firefox 145, Firefox ESR 140.5, Thunderbird 145, and Thunderbird 140.5.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox | < 140.5.0 |
| Mozilla | Firefox | < 145.0 |
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1988412Permissions Required
- https://www.mozilla.org/security/advisories/mfsa2025-87/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2025-88/Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2025-13019?
Same-origin policy bypass in the DOM: Workers component. This vulnerability was fixed in Firefox 145, Firefox ESR 140.5, Thunderbird 145, and Thunderbird 140.5.
How severe is CVE-2025-13019?
CVE-2025-13019 has a CVSS score of 8.1/10 (HIGH severity). The EPSS model estimates a 0.22% probability of exploitation in the next 30 days.
How do I fix CVE-2025-13019?
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-2025-13019?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST