CVE-2026-48099 json
WsgiDAV encoded dot segments can escape filesystem share roots
published 5mo ago modified 2mo ago also EUVD-2026-58224 , GHSA-wxq4-cc2q-338q , PYSEC-2026-3428
- 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
Is CVE-2026-48099 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerVendor 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
- 2mo ago
Exploit prediction
0.33% chance of exploitation in the next 30 days, higher than 26% of all scored CVEs (FIRST EPSS, 2026-11-11).
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 |
| GitHub | 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 |
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 Intel 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.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.