Arbitrary File Write via Archive Extraction (Zip Slip)
Priority MEDIUM 45CWE-22Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub.
Summary
This affects all versions of package elFinder.NetCore. The ExtractAsync function within the FileSystem is vulnerable to arbitrary extraction due to insufficient validation.
Why it matters now
EPSS 0.01431 73rd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | elFinder.NetCore | all versions | — | No fix listed | CNA |
| — | elFinder.NetCore (NuGet) | up to 1.3.5 | — | No fix listed | GHSA-wmpm-fq7r-jq56 |
- elFinder.NetCore Vendor— Affected all versions Fixed in — No fix listed CNA
- elFinder.NetCore (NuGet) Vendor— Affected up to 1.3.5 Fixed in — No fix listed GHSA-wmpm-fq7r-jq56
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:elfinder.netcore_project:elfinder.netcore:*:*:*:*:*:*:*:* | all versions | Vulnerable | Elfinder.netcore Project |
- cpe:2.3:a:elfinder.netcore_project:elfinder.netcore:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Elfinder.netcore Project
Remediation
No fixed version listed by the sources yet.
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
elFinder.NetCore unspecified
2 records Highest priority Priority MEDIUM 2 MEDIUM
Other records, highest priority first
- TI-2021-06120 Directory traversal in elFinder.NetCorePriority MEDIUM 45
Timeline
- 2026-10-02 Threatist record created from CVE-2021-23427
- 2026-10-03 Alias added: GHSA-wmpm-fq7r-jq56
References
Other 3
- https://github.com/gordon-matt/elFinder.NetCore/blob/633da9a4d7d5c9baefd1730ee51bf7af54889600/elFinder.NetCore/Drivers/FileSystem/FileSystemDriver.cs%23L226
- https://github.com/gordon-matt/elFinder.NetCore
- https://github.com/gordon-matt/elFinder.NetCore/blob/633da9a4d7d5c9baefd1730ee51bf7af54889600/elFinder.NetCore/Drivers/FileSystem/FileSystemDriver.cs#L226
More Elfinder.netcore Project Elfinder.netcore vulnerabilities
- TI-2021-06120 Directory traversal in elFinder.NetCore CVSS 3.1CRITICAL 9.8
Sources
- CVE-2021-23427 · CVE Program
- CVE-2021-23427 · NVD
- FIRST EPSS
- GHSA-wmpm-fq7r-jq56 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences