CVE-2026-7819
Severity CVSS v4.0:
HIGH
Type:
Unavailable / Other
Publication date:
11/05/2026
Last modified:
13/05/2026
Description
Symbolic-link path traversal (CWE-61, CWE-22) in pgAdmin 4 File Manager.<br />
<br />
check_access_permission used os.path.abspath, which resolves &#39;..&#39; but does not resolve symbolic links, while the subsequent kernel write follows symlinks. An authenticated user could plant a symbolic link inside their own storage directory pointing outside it and induce pgAdmin to write to any path reachable by the pgAdmin process.<br />
<br />
Fix switches the access check to os.path.realpath for both source and destination, and adds an _open_upload_target helper that opens the target with O_NOFOLLOW (mode 0o600) to close the leaf-component TOCTOU between the access check and the open. File mode is hardened from 0o644 to 0o600.<br />
<br />
This issue affects pgAdmin 4: before 9.15.
Impact
Base Score 4.0
7.20
Severity 4.0
HIGH
Base Score 3.x
8.10
Severity 3.x
HIGH