What is CVE-2021-42564?

CVE-2021-42564 is a medium-severity vulnerability in Cryptshare Server, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 5.4/10. Published 2021-11-30.

How severe is CVE-2021-42564?

Medium severity. CVSS v3 base score is 5.4 out of 10.

Open Redirect in Cryptshare Server

CVE-2021-42564

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.

Vulnerability class: Open Redirect

EPSS: 0.007 (48.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

Affected products

Cryptshare Cryptshare_server
N/a — versions n/a

Weakness classification (CWE)

CWE-601 — URL Redirection to Untrusted Site (Open Redirect)

References

cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2021-42564?: CVE-2021-42564 is a medium-severity vulnerability in Cryptshare Server, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 5.4/10. Published 2021-11-30.
How severe is CVE-2021-42564?: Medium severity. CVSS v3 base score is 5.4 out of 10.