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CVE-2026-104059— Lektor 3.3.14 CSRF via Admin API Endpoints

Quick assessment

Affected
lektor lektor
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.

Lektor 3.3.14 和 3.4.0b15 版本的管理 API 蓝图存在跨站请求伪造（CSRF）漏洞。该漏洞允许未经身份验证的攻击者通过发送缺少 CSRF 令牌、Origin/Referer 校验、CORS 配置或 Host 白名单验证的跨域请求，执行状态变更操作。攻击者可利用恶意网页调用 newattachment、deleterecord、build、clean 和 publish 等接口，从而写入任意文件、删除页面、清除构建输出、触发部署发布；此外，通过 DNS 重绑定技术还可访问读取类接口以泄露数据。

CVSS 8.1 · High
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I. Basic Information for CVE-2026-104059

Vulnerability Information
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Vulnerability Title
Lektor 3.3.14 CSRF via Admin API Endpoints
Source: CVE Program / CVE List V5
Vulnerability Description
Lektor 3.3.14 and 3.4.0b15 contains a cross-site request forgery vulnerability in the admin API blueprint that allows unauthenticated attackers to perform state-changing actions by sending cross-origin requests without CSRF tokens, Origin/Referer validation, CORS configuration, or Host allowlisting. Attackers can exploit the newattachment, deleterecord, build, clean, and publish endpoints from a malicious web page to write arbitrary files, delete pages, wipe build output, trigger deployment publication, and via DNS rebinding reach read endpoints to disclose data.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
跨站请求伪造(CSRF)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
lektor lektor 0 ~ 3.3.14 -

II. Public POCs for CVE-2026-104059

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-104059

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Vendor Advisories for CVE-2026-104059 (1)

Proof of Concept for CVE-2026-104059 (1)

IV. Related Vulnerabilities

Same weakness: CWE-352

V. Comments for CVE-2026-104059

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