CVE-2019-8953

MEDIUM

netgate/haproxy < 0.59_16 - Cross-Site Scripting via Description or ACL Parameter

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2019-8953. PoCs published by Gionathan Reale.

AI-analyzed exploit summary This exploit demonstrates a stored XSS vulnerability in pfSense's HAProxy package. The payload is injected via the 'Description' parameter in the HAProxy listener edit page, triggering a JavaScript alert.

Description

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.

Exploits (1)

exploitdb WORKING POC
by Gionathan Reale · textwebappsphp
https://www.exploit-db.com/exploits/46538

This exploit demonstrates a stored XSS vulnerability in pfSense's HAProxy package. The payload is injected via the 'Description' parameter in the HAProxy listener edit page, triggering a JavaScript alert.

Classification
Working Poc 90%
Attack Type
Xss
Complexity
Trivial
Reliability
Reliable
Target: pfSense 2.4.4-p1 with HAProxy Package 0.59_14
Auth required
Prerequisites: Access to the HAProxy listener edit page · Valid authentication credentials
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (5)

Core 5
Core References
Patch, Third Party Advisory x_refsource_misc
https://redmine.pfsense.org/issues/9335
Exploit, Third Party Advisory x_refsource_misc
https://cxsecurity.com/issue/WLB-2019020153
Exploit, Third Party Advisory, VDB Entry exploit x_refsource_exploit-db
https://www.exploit-db.com/exploits/46538/

Scores

CVSS v3 6.1
EPSS 0.7172
EPSS Percentile 98.8%
Attack Vector NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Details

CWE
CWE-79
Status published
Products (1)
netgate/haproxy < 0.59_16
Published Feb 20, 2019
Tracked Since Feb 18, 2026