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CVE-2026-48070— Docmost: Avatar URL path traversal in avatar cleanup leads to arbitrary local file deletion

Quick assessment

Affected
docmost docmost
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.

Docmost 是一款开源的协作式维基和文档管理软件。在 0.80.1 版本之前，经过身份验证的用户可以存储由攻击者控制的 值，这些值在后续执行头像清理操作时会被重新使用，而在本地存储部署中，该清理过程缺乏对目标目录的限制，导致越权访问本地文件系统的风险。低权限用户可利用此漏洞删除 Docmost 服务账户可访问的任意本地文件或目录。该问题已在 0.80.1 版本中得到修复。

CVSS 7.1 · High EPSS 0.37% · P28

Possible ATT&CK Techniques 1 AI

T1565.001 · Stored Data Manipulation

Affected Version Matrix 1

VendorProduct Version RangeStatus
docmost docmost < 0.80.1 affected
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I. Basic Information for CVE-2026-48070

Vulnerability Information
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Vulnerability Title
Docmost: Avatar URL path traversal in avatar cleanup leads to arbitrary local file deletion
Source: CVE Program / CVE List V5
Vulnerability Description
Docmost is open-source collaborative wiki and documentation software. Prior to 0.80.1, authenticated users can store attacker-controlled avatarUrl values that are later reused by avatar cleanup without confinement to the intended directory on local-storage deployments. A low-privileged user can cause deletion of arbitrary local files or directories reachable by the Docmost service account. This issue is fixed in version 0.80.1.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
docmost docmost < 0.80.1 -

II. Public POCs for CVE-2026-48070

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III. Intelligence Information for CVE-2026-48070

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Patches & Fixes for CVE-2026-48070 (1)

Vendor Advisories for CVE-2026-48070 (1)

Vendor Pages for CVE-2026-48070 (1)

Same Patch Batch · docmost · 2026-09-24 · 6 CVEs total

CVE-2026-65827 6.5 MEDIUM Docmost: Unbounded ZIP decompression (zip-bomb) in page import allows denial of service
CVE-2026-48072 5.3 MEDIUM Docmost: Public image fileName path traversal leads to unauthorized local file read
CVE-2026-52853 5.2 MEDIUM Docmost: Privilege Escalation - ADMIN Can Invite Users as OWNER
CVE-2026-52850 4.3 MEDIUM Docmost: Broken access control in transclusion lookup API leaks sync-block content across
CVE-2026-48073 4.3 MEDIUM Docmost: Page export can include restricted same-space attachments through forged attachme

IV. Related Vulnerabilities

Same product: docmost
Same vendor: docmost
Same weakness: CWE-22

V. Comments for CVE-2026-48070

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