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.

CVSS v3.1

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

CVSS v2.0

4.9 MEDIUMAV:N/AC:M/Au:S/C:P/I:P/A:N

EPSS

0.66% chance of exploitation in the next 30 days, 49th percentile

Published

2021-11-30

Updated

2024-08-04

Proof-of-concept exploits (1)

• https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2021-057.txt

References

• CVE Record
• NVD entry

Related

• CVE-2021-42562
• CVE-2021-42565
• CVE-2021-42561
• CVE-2021-42566
• CVE-2021-42560
• CVE-2021-42567