Cyber Resilience

CVE-2025-50735

HighPublic PoC

Published: 03 November 2025

Published
03 November 2025
Modified
05 November 2025
KEV Added
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Patch
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CVSS Score v3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
EPSS Score 0.0033 56.5th percentile
Risk Priority 15 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2025-50735 is a high-severity Path Traversal (CWE-22) vulnerability in Nextchat Nextchat. Its CVSS base score is 7.5 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked in the top 43.5% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

EU & UK References

Vulnerability details

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.

CWE(s)
CWE-22

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
T1083 File and Directory Discovery Discovery
Adversaries may enumerate files and directories or may search in specific locations of a host or network share for certain information within a file system.
attack.mitre.org →
T1005 Data from Local System Collection
Adversaries may search local system sources, such as file systems, configuration files, local databases, virtual machine files, or process memory, to find files of interest and sensitive data prior to Exfiltration.
attack.mitre.org →
Why these techniques?

Directory traversal vulnerability in WebDAV proxy of public-facing NextChat application enables exploitation (T1190), file and directory discovery via path traversal (T1083), and collection of sensitive data from the local system (T1005).

Affected Assets

nextchat
nextchat
≤ 2.16.0

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.

SI-10 Information Input Validation
addresses: CWE-22

Validates pathnames and filenames to prevent traversal outside intended directories.

References