CVE-2021-42564

MediumCVSS 5.4/10Last modified Jun 17, 2026

Description

An open redirect through HTML injection in confidential messages in Cryptshare before 5.1.0 allows remote attackers (with permission to provide confidential messages via Cryptshare) to redirect targeted victims to any URL via the '<meta http-equiv="refresh"' substring in the editor parameter.

Metrics

CVSS 3.1 5.4/10CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Weakness enumeration

Affected software

No affected versions have been published.

Timeline

Published
Nov 30, 2021
Last modified
Jun 17, 2026
NVD status
Modified

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CVE-2021-42564: Medium severity, CVSS 5.4 | Vulnix