CVE-2025-5263 - CVE House
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Status published Unknown CVE-2025-5263

Error handling for script execution was incorrectly isolated from web content

Vulnerability Description

Error handling for script execution was incorrectly isolated from web content, which could have allowed cross-origin leak attacks. This vulnerability was fixed in Firefox 139, Firefox ESR 115.24, Firefox ESR 128.11, Thunderbird 139, and Thunderbird 128.11.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • terjanq

References

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Affected Vendor

Affected Software

Firefox, Thunderbird
Vulnerable Versions:
115.24, 128.11, 139

Timeline

Official Publish: May 27th, 2025
Last Modified: April 13th, 2026
Added to House: July 22nd, 2026

CVSS Vectors

No vector data available

Weaknesses (CWE)

No CWE data available

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.