CVE-2026-48099 json
WsgiDAV encoded dot segments can escape filesystem share roots
published 2026-06-11 4 mo ago modified 2026-09-09 1 mo ago also GHSA-wxq4-cc2q-338q , PYSEC-2026-3428 , EUVD-2026-58224
- cvss
- 7.1
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 26%
- public exploits
- 0
- none known
Summary
WsgiDAV 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.
Patch / fix
Vendor advisories
What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
red hat product security vex CVE-2026-48099 updated cvss 7.1
wsgidav: WsgiDAV: Filesystem path traversal via encoded dot segments
-
Red Hat All currently supported Red Hat productsnot affected: vulnerable code not present
Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 2 mo ago
Exploit prediction
0.33% chance of exploitation in the next 30 days, higher than 26% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.1 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L |
| OSV | 3.1 | 7.1 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L |
| GitHub | 3.1 | 7.1 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| pypi | wsgidav | <4.3.4 |
4.3.4 |
Affected products
- mar10 wsgidav
Classification
- Weakness
-
- CWE-22 Improper Limitation of a Pathname to a Restricted Directory
References
-
github.com
/mar10/wsgidav/commit/f894ed8656d7bdd7438ab8148c5a02546cb15183
web
-
github.com
/mar10/wsgidav/security/advisories/GHSA-wxq4-cc2q-338q
web
- github.com /pypa/advisory-database/tree/main/vulns/wsgidav/PYSEC-2026-3428.yaml
-
github.com
/mar10/wsgidav
package
-
pypi.org
/project/wsgidav
package
-
github.com
/advisories/GHSA-wxq4-cc2q-338q
advisory
-
nvd.nist.gov
/vuln/detail/CVE-2026-48099
advisory
Sources
- CVE List CVE-2026-48099
- GitHub Advisory GHSA-wxq4-cc2q-338q
- NVD CVE-2026-48099
- OSV PYSEC-2026-3428
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.