CVE-2018-25349

userSpice 4.3.24 contains a cross-site scripting vulnerability that allows attackers to inject malicious scripts through the X-Forwarded-For HTTP header. Attackers can send crafted requests to the backup.php endpoint with XSS payloads in the X-Forwarded-For header that execute when administrators visit the audit log page.

CVSS v4.0

5.1 MEDIUMCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/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

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

EPSS

0.15% chance of exploitation in the next 30 days, 5th percentile

Published

2026-05-23

Updated

2026-05-27

Proof-of-concept exploits (1)

• https://www.exploit-db.com/exploits/44871

References

• CVE Record
• NVD entry

Related

• CVE-2018-25348
• CVE-2018-25350
• CVE-2018-25347
• CVE-2018-25351
• CVE-2018-25346
• CVE-2018-25352