CVE-2021-27520

A cross-site scripting (XSS) issue in FUDForum 3.1.0 allows remote attackers to inject JavaScript via index.php in the "author" parameter.

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

6.40% chance of exploitation in the next 30 days, 93th percentile

Nuclei

medium · CWE-79

Published

2021-03-19

Updated

2024-08-03

Proof-of-concept exploits (2)

• http://packetstormsecurity.com/files/162942/FUDForum-3.1.0-Cross-Site-Scripting.html
• fudforum/FUDforum/issues/2

Nuclei templates (1)

• projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-27520.yaml

ExploitDB entries (1)

• https://www.exploit-db.com/exploits/49943

References

• CVE Record
• NVD entry

Related

• CVE-2021-27519
• CVE-2022-30860
• CVE-2022-30861
• CVE-2022-30863
• CVE-2021-27526
• CVE-2021-27514