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Fencer Vulns
medium 6.1

CVE-2019-8953 json

The HAProxy package before 0.59_16 for pfSense has XSS via the desc (aka Description) or table_actionsaclN parameter, related to haproxy_li…

published 2019-02-20 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-18340

cvss
6.1
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
52.2%
EPSS 52.2% chance of exploitation in 30 days, percentile 98%
public exploits
1
Exploit-DB

Summary

The HAProxy package before 0.59_16 for pfSense has XSS via the desc (aka Description) or table_actionsaclN parameter, related to haproxy_listeners.php and haproxy_listeners_edit.php.

Patch / fix

  • netgate haproxy 0.59_16

Timeline

  1. Published
  2. First public exploit (EDB-46538)

Exploit prediction

52.24% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-46538 pfSense 2.4.4-p1 (HAProxy Package 0.59_14) - Persistent Cross-Site Scripting webapps, 2019-03-13
  • cxsecurity.com https://cxsecurity.com/issue/WLB-2019020153 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.