Which products and versions are affected by CVE-2019-8953?

Affected: Haproxy (Netgate). The full list is in the CVE brief.

Is CVE-2019-8953 being exploited in the wild?

It is not listed in any known-exploited vulnerabilities catalog.

Is CVE-2019-8953 in the CISA KEV catalog?

No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.

Is there a public exploit for CVE-2019-8953?

Public exploit code is available.

Is there a fix for CVE-2019-8953?

Fixed versions are available, including Haproxy 0.59_16.

How urgently should CVE-2019-8953 be patched?

Brandefense priority: patch immediately, because it is very likely to be exploited soon.

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Vulnerability Intelligence

CVE-2019-8953

MediumPublic exploit

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.

Published Feb 20, 2019 · Updated Jul 8, 2026

Key Facts

Patch immediately

CVE-2019-8953 is a medium-severity vulnerability (CVSS 6.1 v3.1) affecting Haproxy (Netgate).
It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
EPSS estimates a 52% probability of exploitation in the next 30 days.
Fixed versions are available, including Haproxy 0.59_16.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.

CVSS v3.1

6.1

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS (30-day exploit likelihood)

52%

Higher than 98.9% of all scored CVEs

Exploited in the wild

No known

Not in a known-exploited catalog

Public exploit code

Available

Proof-of-concept or weaponized module

Get the full CVE-2019-8953 brief as a PDF

Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.

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.

Affected Products

1 affected entries in total

Product	Affected versions	Fixed in
HaproxyNetgate	See advisory	0.59_16

Patched Releases

Haproxy

0.59_16

Timeline

Publicly disclosed
Feb 20, 2019
Last updated
Jul 8, 2026

Weakness Type

CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

References

1 more references in the full CVE brief

FAQ

Common Questions.

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.
Affected: Haproxy (Netgate). The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
Fixed versions are available, including Haproxy 0.59_16.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.

Is CVE-2019-8953 Running On Your Attack Surface?

Brandefense maps vulnerabilities like this one to your internet-facing assets and tells you exactly where to patch.