Cacti has a Reflected XSS Vulnerability via html_auth_footer

published 2026-06-24 4 mo ago modified 2026-06-25 4 mo ago also EUVD-2026-39133

cvss: 6.1; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 0.3%; EPSS 0.3% chance of exploitation in 30 days, percentile 18%
public exploits: 0; none known

Cacti is an open source performance and fault management framework. Versions 1.2.30 and below contain a Reflected XSS vulnerability in the html_auth_footer. This issue has been fixed in version 1.2.31.

Patch / fix

fixed in 1 distros 1 links 1

cacti cacti 1.2.31

cacti Debian 14 1.2.31+ds1-1

debian advisories DEBIAN-CVE-2026-39897

github.com/Cacti/cacti@7c544ea commit

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 4 mo ago (2026-06-25)

Exploit prediction

0.26% chance of exploitation in the next 30 days, higher than 18% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	4.0	5.3	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
CNA	4.0	5.3	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/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
NVD	3.1	6.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected products

Cacti cacti

Classification

Weakness

CWE-79 Improper Neutralization of Input During Web Page Generation

References

github.com /Cacti/cacti/commit/7c544ea0b45de627f206eefe93005433c2c3864d
patch
github.com /Cacti/cacti/security/advisories/GHSA-2j98-xfjq-gw39
vendor-advisory

Sources

CVE List CVE-2026-39897
NVD CVE-2026-39897

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary