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Fencer Vulns
medium 6.1

CVE-2021-26247 json

As an unauthenticated remote user, visit "http://<CACTI_SERVER>/auth_changepassword.php?ref=<script>alert(1)</script>" to successfully exec…

published 2022-01-19 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-13064

cvss
6.1
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
7.1%
EPSS 7.1% chance of exploitation in 30 days, percentile 94%
public exploits
0
none known, plus a Nuclei check

Summary

As an unauthenticated remote user, visit "http://<CACTI_SERVER>/auth_changepassword.php?ref=<script>alert(1)</script>" to successfully execute the JavaScript payload present in the "ref" URL parameter.

Patch / fix

  • cacti Debian 14, Debian 13, Debian 12 0.8.7i-1

debian advisories DEBIAN-CVE-2021-26247

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2021-26247 updated cvss 5.5

cacti: XSS allows an unauthenticated remote attackers to perform HTML injection

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

7.12% chance of exploitation in the next 30 days, higher than 94% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

CVSS scores

assigned by version score vector
NVD 3.1 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:P/A:N

Affected products

  • n/a Cacti

Classification

Weakness
  • CWE-79 Improper Neutralization of Input During Web Page Generation

References

Sources

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.