EUVD-2026-71609
GHSA-3pq2-4qp4-w69m
Severity by source
AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Network vector as dashboard is web-accessible; PR:L because attacker must hold authenticated pfSense access to configure the widget; UI:R for victim dashboard load; S:C for browser context crossing; no availability impact.
Primary rating from Vendor (mitre).
CVSS VectorVendor: mitre
Lifecycle Timeline
5DescriptionCVE.org
Cross-Site Scripting (XSS) vulnerability in the RSS Widget of Netgate pfSense Plus (versions 26.03, 25.11.1) and pfSense CE (version 2.8.1) allows remote authenticated attackers to inject arbitrary JavaScript via malicious content in an RSS feed title. The injected script executes in the browser of any authenticated user who views the dashboard, due to insufficient sanitization of feed title data before rendering in the widget.
AnalysisAI
Stored cross-site scripting in the pfSense dashboard RSS Widget allows an authenticated attacker to inject arbitrary JavaScript into the browsers of all authenticated users who view the dashboard. The attacker configures the RSS widget to point to an attacker-controlled feed whose title element contains a malicious payload; because pfSense previously rendered the feed title via <?=$item->get_title()?> without sanitization, the script executes in any victim session that loads the dashboard. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the attacker to hold an authenticated pfSense account with sufficient privileges to access and configure the RSS dashboard widget - this is typically any account with web GUI access, not a read-only or restricted role. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 score of 5.4 (AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N) is well-calibrated for this issue. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Upgrade to a pfSense Plus or pfSense CE release that includes the fix from commit 9363ac5b, which applies `htmlspecialchars(strip_tags())` to the RSS feed title before rendering. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-79 – Cross-site Scripting (XSS)
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External POC / Exploit Code
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