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CVE-2026-109118— Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') in rdiffweb

Quick assessment

Affected
ikus-soft rdiffweb
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.

ikus060 的 rdiffweb 7.1.1 版本中存在路径包含检查不当的漏洞。该漏洞允许已认证用户通过在请求路径中使用百分号编码的目录穿越序列（%2e%2e），使浏览、恢复、历史记录和删除等操作解析到目标仓库之外的路径。其根本原因在于：路径包含检查采用了字符串前缀比较（startswith），而非基于文件系统路径边界的正确检查。 触发此漏洞需要满足以下条件：目标路径必须是与仓库路径同级的兄弟路径，且其名称以仓库路径开头，同时攻击者已拥有对该路径的访问权限。该漏洞可能误导用户在未察觉的情况下，对非当前显示仓库的

CVSS 4.6 · Medium EPSS 0.23% · P13

Affected Version Matrix 1

VendorProduct Version RangeStatus
ikus-soft rdiffweb < 7.1.1 affected
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I. Basic Information for CVE-2026-109118

Vulnerability Information
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Vulnerability Title
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') in rdiffweb
Source: CVE Program / CVE List V5
Vulnerability Description
Improper path containment check in ikus060 rdiffweb 7.1.1 allows an authenticated user to cause the browse, restore, history and delete operations to resolve to a path outside the repository being operated on, via a percent-encoded traversal sequence (%2e%2e) in the request path, because the containment check uses a string prefix comparison (startswith) instead of a filesystem path boundary check. The target must be a sibling path whose name begins with the repository path, and the user already hold permissions on it; the issue can mislead a user into operating on, or deleting, data other than the repository displayed
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/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
ikus-soft rdiffweb 0 ~ 7.1.1 -

II. Public POCs for CVE-2026-109118

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III. Intelligence Information for CVE-2026-109118

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Other References for CVE-2026-109118 (4)

IV. Related Vulnerabilities

Same product: rdiffweb
Same vendor: ikus-soft
Same weakness: CWE-22

V. Comments for CVE-2026-109118

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