WsgiDAV encoded dot segments can escape filesystem share roots

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-48099
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-13 20:17:22 UTC
Updated2026-08-14 17:18:19 UTC
DescriptionWsgiDAV is a generic and extendable WebDAV server based on WSGI. WsgiDAV 4.3.3 and prior can allow a WebDAV request path containing an encoded parent-directory segment to escape the configured filesystem share root in a specific path layout. The issue is fixed with version 4.3.4.

Risk And Classification

Primary CVSS: v3.1 7.1 HIGH from [email protected]

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L

EPSS: 0.003310000 probability, percentile 0.260430000 (date 2026-08-16)

Problem Types: CWE-22 | CWE-22 CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary7.1HIGHCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L
3.1CNADECLARED7.1HIGHCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
Low

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Mar10 Wsgidav affected < 4.3.4 Not specified

References

ReferenceSourceLinkTags
github.com/mar10/wsgidav/security/advisories/GHSA-wxq4-cc2q-338q [email protected] github.com
github.com/mar10/wsgidav/commit/f894ed8656d7bdd7438ab8148c5a02546cb15183 [email protected] github.com
github.com/pypa/advisory-database/tree/main/vulns/wsgidav/PYSEC-2026-342... [email protected] github.com
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