CVE-2020-15655

MediumCVSS 6.5/10Last modified Jun 17, 2026

Description

A redirected HTTP request which is observed or modified through a web extension could bypass existing CORS checks, leading to potential disclosure of cross-origin information. This vulnerability affects Firefox ESR < 78.1, Firefox < 79, and Thunderbird < 78.1.

Metrics

CVSS 3.1 6.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Affected software

No affected versions have been published.

Timeline

Published
Aug 10, 2020
Last modified
Jun 17, 2026
NVD status
Modified

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CVE-2020-15655: Medium severity, CVSS 6.5 | Vulnix