CVE-2021-24245

The Stop Spammers WordPress plugin before 2021.9 did not escape user input when blocking requests (such as matching a spam word), outputting it in an attribute after sanitising it to remove HTML tags, which is not sufficient and lead to a reflected Cross-Site Scripting issue.

CVSS v3.1

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

CVSS v2.0

4.3 MEDIUMAV:N/AC:M/Au:N/C:N/I:P/A:N

EPSS

5.72% chance of exploitation in the next 30 days, 92th percentile

Nuclei

medium · CWE-79

Published

2021-05-05

Updated

2024-08-03

Proof-of-concept exploits (2)

• http://packetstormsecurity.com/files/162623/WordPress-Stop-Spammers-2021.8-Cross-Site-Scr…
• https://wpscan.com/vulnerability/5e7accd6-08dc-4c6e-9d19-73e2d7e97735

Nuclei templates (1)

• projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-24245.yaml

ExploitDB entries (1)

• https://www.exploit-db.com/exploits/49880

References

• CVE Record
• NVD entry

Related

• CVE-2021-24244
• CVE-2021-24246
• CVE-2021-24243
• CVE-2021-24247
• CVE-2021-24242
• CVE-2021-24248