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Fencer Vulns
medium 6.1

CVE-2019-12347 json

In pfSense 2.4.4-p3, a stored XSS vulnerability occurs when attackers inject a payload into the Name or Description field via an acme_accou…

published 2019-05-29 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-3982

cvss
6.1
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
58.6%
EPSS 58.6% chance of exploitation in 30 days, percentile 99.1%
public exploits
1
Exploit-DB

Summary

In pfSense 2.4.4-p3, a stored XSS vulnerability occurs when attackers inject a payload into the Name or Description field via an acme_accountkeys_edit.php action. The vulnerability occurs due to input validation errors.

Patch / fix

Timeline

  1. First public exploit (EDB-46936)
  2. Published

Exploit prediction

58.58% chance of exploitation in the next 30 days, higher than 99.1% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-46936 pfSense 2.4.4-p3 (ACME Package 0.59_14) - Persistent Cross-Site Scripting webapps, 2019-05-29
  • ctrsec.io https://ctrsec.io/index.php/2019/05/28/stored-xss-acme-pfsense-2-4-4-p3/ referenced PoC, tagged "exploit" by a source, unverified
  • redmine.pfsense.org https://redmine.pfsense.org/issues/9554#change-40729 referenced PoC, tagged "exploit" by a source, unverified
  • packetstormsecurity.com http://packetstormsecurity.com/files/153112/pfSense-2.4.4-p3-Cross-Site-Scripting.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.0 6.1 CVSS:3.0/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

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.