How severe is CVE-2019-18636?

CVE-2019-18636 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2019-18636 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-18636?

CVE-2019-18636 affects Jitbit .net Forum. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-18636?

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

When was CVE-2019-18636 published?

CVE-2019-18636 was published on 2019-11-01 and last updated on 2026-06-17.

CVE-2019-18636

CVE-2019-18636 is a medium-severity vulnerability in Jitbit .net Forum with a CVSS 3.x base score of 5.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 5.4)
CVSS v2: 3.5
EPSS exploit prediction: 1% (49th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Jitbit .net Forum
Published: 2019-11-01
Last modified: 2026-06-17

Description

A cross-site scripting (XSS) vulnerability in Jitbit .NET Forum (aka ASP.NET forum) 8.3.8 allows remote attackers to inject arbitrary web script or HTML via the gravatar URL parameter.

Frequently asked questions

What is CVE-2019-18636?: A cross-site scripting (XSS) vulnerability in Jitbit .NET Forum (aka ASP.NET forum) 8.3.8 allows remote attackers to inject arbitrary web script or HTML via the gravatar URL parameter.
How severe is CVE-2019-18636?: CVE-2019-18636 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2019-18636 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-18636?: CVE-2019-18636 affects Jitbit .net Forum. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-18636?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2019-18636 published?: CVE-2019-18636 was published on 2019-11-01 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:jitbit:.net_forum:8.3.8:*:*:*:*:*:*:*

Other CWE-79 (Cross-site Scripting (XSS)) vulnerabilities

CVE-2026-106102 — Critical (CVSS 10.0): Quasar Framework is a framework for building high-performance Vue.js user interfaces. Prior to 2.22.0, the SSR-only…
CVE-2026-59167 — Critical (CVSS 10.0): SunEditor is a lightweight and powerful WYSIWYG editor in vanilla JavaScript with no dependencies. Prior to 2.47.11,…
CVE-2026-85061 — Critical (CVSS 10.0): MapLibre GL JS is an interactive vector tile map library for web browsers. Prior to 6.4.1, DOM.sanitize() in…
CVE-2025-49410 — Critical (CVSS 10.0): Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Imran Emu TC…
CVE-2024-47875 — Critical (CVSS 10.0): DOMPurify is a DOM-only, super-fast, uber-tolerant XSS sanitizer for HTML, MathML and SVG. DOMpurify was vulnerable to…
CVE-2024-6886 — Critical (CVSS 10.0): Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Gitea…

Browse all CWE-79 (Cross-site Scripting (XSS)) vulnerabilities →