How severe is CVE-2019-8953?

CVE-2019-8953 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2019-8953 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 52% (99th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-8953?

CVE-2019-8953 affects Netgate Haproxy. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-8953?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2019-8953 published?

CVE-2019-8953 was published on 2019-02-20 and last updated on 2026-06-17.

CVE-2019-8953

CVE-2019-8953 is a medium-severity vulnerability in Netgate Haproxy with a CVSS 3.x base score of 6.1. Its EPSS exploit-prediction score of 52% places it in the 99th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
CVSS v2: 4.3
EPSS exploit prediction: 52% (99th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Netgate Haproxy
Published: 2019-02-20
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2019-8953?: 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.
How severe is CVE-2019-8953?: CVE-2019-8953 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2019-8953 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 52% (99th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-8953?: CVE-2019-8953 affects Netgate Haproxy. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-8953?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2019-8953 published?: CVE-2019-8953 was published on 2019-02-20 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:netgate:haproxy:*:*:*:*:*:pfsense:*:*

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