Vulnerability Intelligence Report
YesWiki before 4.7.0 Stored XSS via filtertags Action Parameters
CVE-2026-116203
YesWiki before 4.7.0 contains a stored cross-site scripting vulnerability in the filtertags action, which echoes attacker-controlled token values without output encoding. Anonymous attackers can inject markup via action-attribute parameters that bypasses the allow_raw_html gate, executing JavaScript for every page viewer.
Cross-Site Scripting (XSS)
No Active Exploit Signals
CVSS Base Score
5.3
MEDIUM
EPSS Probability:0.17%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
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Authentication
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Weaponization
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SSVC Action
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Weaknesses (CWE)
CWE-79 ↗Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| YesWiki | yeswiki | 0 < 4.7.0 (affected), 4.7.0 (unaffected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | VulnCheck · Bug Bounty Provider · USA |
| Reserved | 2026-10-25T12:27:58 |
| Published | 2026-10-25T13:20:34 |
| Patch Date | 2026-10-09 |
| Last Updated | 2026-10-26T16:41:41 |
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