VulnerabilityAnalyzed

CVE-2025-50735

Directory traversal vulnerability in NextChat thru 2.16.0 due to the WebDAV proxy failing to canonicalize or reject dot path segments in its catch-all route, allowing attackers to gain sensitive information via authenticated or anonymous WebDAV endpoints.

HIGH 7.5EPSS 0.85%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.85%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

CVSS 3.1: 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
EPSS: 0.85% probability · 56th percentile
CISA KEV: Not listed
Weakness: CWE-22
Affected: nextchat/nextchat
Source: cve@mitre.org

References

https://github.com/ChatGPTNextWeb/NextChat/blob/main/app/api/webdav/%5B...path%5D/route.tsProduct
https://github.com/ChatGPTNextWeb/NextChat/blob/main/app/utils/cloud/webdav.tsProduct
https://github.com/fai1424/Vulnerability-Research/tree/main/CVE-2025-50735Exploit, Third Party Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.