Reflected XSS Vulnerability in Cacti Performance Management Framework
CVE-2026-39900

5.3MEDIUM

Key Information:

Vendor

Cacti

Status
Cacti
Vendor
CVE Published:
24 June 2026

What is CVE-2026-39900?

An identified vulnerability in Cacti, an open source performance and fault management framework, allows for reflected XSS attacks through the 'tab' parameter in the auth_profile.php JavaScript context. This flaw, present in versions 1.2.30 and earlier, can be exploited by malicious actors to execute arbitrary scripts in the context of the victim's browser. Users are advised to upgrade to version 1.2.31, where this issue has been resolved, to safeguard their applications from potential exploits.

Affected Version(s)

cacti < 1.2.31

References

https://github.com/Cacti/cacti/security/advisories/GHSA-3...
x_refsource_CONFIRM
https://github.com/Cacti/cacti/commit/891344a5c10b8687a3d...
x_refsource_MISC

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.