Vulnerability · Published Jun 24, 2026 · Assigned by GitHub_M
CVE-2026-39900Cacti: Reflected XSS via tab parameter in auth_profile.php JavaScript context
Medium 5.3
In plain English
A medium-severity cross-site scripting in cacti from Cacti. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 18% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 4.0)5.3Medium
Exploit odds (30 days)0.3%top 81.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Cacti is an open source performance and fault management framework. Versions 1.2.30 and prior are vulnerable to Reflected XSS via tab parameter in the auth_profile.php JavaScript context. This issue has been fixed in version 1.2.31.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | cacti | no fix listed | DEBIAN-CVE-2026-39900 |
| Debian:13 | cacti | no fix listed | DEBIAN-CVE-2026-39900 |
| Debian:14 | cacti | 1.2.31+ds1-1 | DEBIAN-CVE-2026-39900 |
| Ubuntu:24.04:LTS | cacti | no fix listed | UBUNTU-CVE-2026-39900 |
| Ubuntu:25.10 | cacti | no fix listed | UBUNTU-CVE-2026-39900 |
| Ubuntu:26.04:LTS | cacti | no fix listed | UBUNTU-CVE-2026-39900 |
| Ubuntu:26.10 | cacti | no fix listed | UBUNTU-CVE-2026-39900 |
Affected products (as reported)
Weakness: CWE-79 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
References
- https://github.com/Cacti/cacti/security/advisories/GHSA-34rf-frc3-v48r x_refsource_CONFIRM
- https://github.com/Cacti/cacti/commit/891344a5c10b8687a3d2a5d26e6de20f13069e2a x_refsource_MISC