CVE-2026-34212— Docmost page content has stored XSS via unsanitized attachment URLs
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I. Basic Information for CVE-2026-34212
Vulnerability Information
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Vulnerability Title
Docmost page content has stored XSS via unsanitized attachment URLs
Source: NVD (National Vulnerability Database)
Vulnerability Description
Docmost is open-source collaborative wiki and documentation software. In versions prior to 0.71.0, improper neutralization of attachment URLs in Docmost allows a low-privileged authenticated user to store a malicious `javascript:` URL inside an attachment node in page content. When another user views the page and activates the attachment link/icon, attacker-controlled JavaScript executes in the context of the Docmost origin. Version 0.71.0 patches the issue.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Source: NVD (National Vulnerability Database)
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: NVD (National Vulnerability Database)
Vulnerability Title
Docmost 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Docmost是Docmost开源的一个开协作维基和文档软件。 Docmost 0.71.0之前版本存在跨站脚本漏洞，该漏洞源于附件URL中和不当，可能导致低权限认证用户在页面内容中存储恶意javascript:URL并执行攻击者控制的JavaScript。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2026-34212
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Advisory · 1
Same Patch Batch · docmost · 2026-04-14 · 4 CVEs total
| CVE-2026-34213 | 5.4 MEDIUM | Docmost has cross-page attachment overwrite via flawed attachmentId overwrite validation |
| CVE-2026-33193 | 4.6 MEDIUM | Docmost vulnerable to stored XSS via MIME type spoofing |
| CVE-2026-33146 | 4.3 MEDIUM | Docmost's Public Share Search Exposes Metadata of Restricted Children |
IV. Related Vulnerabilities
Same product: docmost
- CVE-2026-40927
Docmost: XSS in Comments with JavaScript URI - CVE-2026-34213
Docmost has cross-page attachment overwrite via flawed attac - CVE-2026-33193
Docmost vulnerable to stored XSS via MIME type spoofing - CVE-2026-33146
Docmost's Public Share Search Exposes Metadata of Restricted - CVE-2026-24045
Docmost Affected by Stored XSS in Public Share Page
Same vendor: docmost
- CVE-2026-40927
Docmost: XSS in Comments with JavaScript URI - CVE-2026-34213
Docmost has cross-page attachment overwrite via flawed attac - CVE-2026-33193
Docmost vulnerable to stored XSS via MIME type spoofing - CVE-2026-33146
Docmost's Public Share Search Exposes Metadata of Restricted - CVE-2026-24045
Docmost Affected by Stored XSS in Public Share Page
Same weakness: CWE-79
- CVE-2026-2955
AI Chatbot & Workflow Automation by AIWU <= 1.4.14 - Unauthe - CVE-2026-7460
mailcow-dockerized 2026-03b - Stored XSS in Queue Manager vi - CVE-2026-6549
Logo Manager For Enamad <= 0.7.4 - Authenticated (Contributo - CVE-2026-8038
Faces of Users <= 0.0.3 - Authenticated (Contributor+) Store - CVE-2026-6399
General Options <= 1.1.0 - Authenticated (Administrator+) St
V. Comments for CVE-2026-34212
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