CVE-2021-23953

MediumCVSS 4.3/10Last modified Jun 17, 2026

Description

If a user clicked into a specifically crafted PDF, the PDF reader could be confused into leaking cross-origin information, when said information is served as chunked data. This vulnerability affects Firefox < 85, Thunderbird < 78.7, and Firefox ESR < 78.7.

Metrics

CVSS 3.1 4.3/10CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

Affected software

No affected versions have been published.

Timeline

Published
Feb 26, 2021
Last modified
Jun 17, 2026
NVD status
Modified

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