CVE-2021-47873

VestaCP versions prior to 0.9.8-25 contain a cross-site scripting vulnerability in the IP interface configuration that allows attackers to inject malicious scripts. Attackers can exploit the 'v_interface' parameter by sending a crafted POST request to the add/ip/ endpoint with a stored XSS payload.

CVSS v4.0

5.1 MEDIUMCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS v3.1

7.2 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

EPSS

0.20% chance of exploitation in the next 30 days, 10th percentile

Published

2026-01-21

Updated

2026-03-05

Proof-of-concept exploits (1)

• https://www.exploit-db.com/exploits/49662

References

• CVE Record
• NVD entry

Related

• CVE-2021-47872
• CVE-2021-47874
• CVE-2021-47871
• CVE-2021-47875
• CVE-2021-47870
• CVE-2021-47876