CVE-2026-116203— YesWiki before 4.7.0 Stored XSS via filtertags Action Parameters

Quick assessment

Affected

YesWiki yeswiki

Exploitation

No confirmed in-the-wild exploitation; assess based on exposure

Recommended action

Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

YesWiki 4.7.0 之前的版本在操作中存在存储型跨站脚本（Stored XSS）漏洞。该漏洞会直接回显攻击者可控的令牌值，且未进行输出编码。匿名攻击者可通过属性参数注入标记内容，从而绕过安全限制，导致所有页面访问者执行恶意 JavaScript 代码。

CVSS 6.1 · Medium Updated Oct 25, 2026

Possible ATT&CK Techniques 2 AI

T1055.002 · Portable Executable Injection T1059.007 · JavaScript

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Vulnerability Information

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Vulnerability Title

YesWiki before 4.7.0 Stored XSS via filtertags Action Parameters

Source: CVE Program / CVE List V5

Vulnerability Description

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.

Source: CVE Program / CVE List V5

CVSS Information

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Source: CVE Program / CVE List V5

Vulnerability Type

在Web页面生成时对输入的转义处理不恰当(跨站脚本)

Source: CVE Program / CVE List V5

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
YesWiki	yeswiki	0 ~ 4.7.0	-

II. Public POCs for CVE-2026-116203

#	POC Description	Source Link	Shenlong Link

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III. Intelligence Information for CVE-2026-116203

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Other References for CVE-2026-116203 (2)

https://www.cve.org/CVERecord?id=CVE-2026-116203

Same Patch Batch · YesWiki · 2026-10-25 · 8 CVEs total

CVE-2026-116207	9.1 CRITICAL	YesWiki 4.6.0 before 4.7.0 SQL Injection via Bazar Entries Search API
CVE-2026-116211	8.2 HIGH	YesWiki 4.5.0 before 4.7.0 SQL Injection via date_maj_fiche in Bazar entry create
CVE-2026-116208	8.1 HIGH	YesWiki 4.6.2 before 4.7.0 Missing Authorization in ActivityPub syncActorPosts
CVE-2026-116204	8.1 HIGH	YesWiki before 4.7.0 CSRF via despam Admin Action
CVE-2026-116206	6.4 MEDIUM	YesWiki 4.2.0 before 4.7.0 Stored XSS via Comment Raw-HTML Syntax
CVE-2026-116202	5.4 MEDIUM	YesWiki before 4.7.0 Stored XSS via ImageField SVG Upload
CVE-2026-116205	5.3 MEDIUM	YesWiki before 4.7.0 Unauthenticated SSRF via [[\|URL]] Raw-Inclusion Syntax

IV. Related Vulnerabilities

Same product: yeswiki

Same vendor: YesWiki

Same weakness: CWE-79