AUGUST 14, 2026
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Case File

CVE-2026-73509

HIGH · CVSS 7.6 EPSS 0.37% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-08-13 · Last synced 2026-08-14

CyberRota Analysis

AI-Generated

The vulnerability affects the OpenList file list program prior to version 4.2.4, specifically in the authenticated /api/fs/batch_rename handler, where it improperly validates user-supplied source names. This oversight allows an attacker with rename permissions to exploit path traversal, potentially leading to unauthorized access to files outside the intended directory, resulting in cross-user file integrity loss and possible file disclosure. Organizations using affected versions should prioritize this update to mitigate the risk of data exposure and integrity issues.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-73509
Severity
HIGH
CVSS
7.6
EPSS
0.37%

Original NVD Description

OpenList a file list program that supports multiple storage. Prior to 4.2.4, the authenticated /api/fs/batch_rename handler in server/handles/fsbatch.go authorizes only the source directory produced by user.JoinPath(req.SrcDir) and validates renameObject.NewName with checkRelativePath, but does not validate attacker-controlled renameObject.SrcName, supplied as src_name, before concatenating it with the authorized path and passing the result to fs.Rename. A user with rename permission can use traversal segments in src_name to make path normalization select a file outside the authorized directory and configured base path, resulting in cross-user file integrity loss, limited availability impact, and file-existence disclosure through success or error responses. This issue is fixed in version 4.2.4.