CVE-2023-35840
Published: 19 June 2023
Summary
CVE-2023-35840 is a medium-severity Path Traversal (CWE-22) vulnerability in Std42 Elfinder. Its CVSS base score is 6.5 (Medium).
Operationally, ranked in the top 8.9% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Deeper analysis
CVE-2023-35840 is a path traversal vulnerability (CWE-22) in the _joinPath function within elFinderVolumeLocalFileSystem.class.php of the PHP LocalVolumeDriver connector. It affects elFinder versions prior to 2.1.62 and carries a CVSS 3.1 base score of 6.5.
An attacker with low-privileged network access and no user interaction required can exploit the flaw to perform unauthorized file modifications on the server, resulting in high integrity impact without affecting confidentiality or availability.
The referenced GitHub security advisory and the commit bb9aaa7b096a1b83f2f85657c43f12131ece2891 indicate that the issue is resolved by upgrading to elFinder 2.1.62 or later; public proof-of-concept repositories further document the path traversal vector in the LocalVolumeDriver.
EPSS remains flat at 0.0626 with no material increase after disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-1903
Vulnerability details
_joinPath in elFinderVolumeLocalFileSystem.class.php in elFinder before 2.1.62 allows path traversal in the PHP LocalVolumeDriver connector.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Validates pathnames and filenames to prevent traversal outside intended directories.