Directory traversal vulnerability in DuxCMS 2.1 allows attackers to delete arbitrary files via /admin/AdminBackup/del.
Priority HIGH 70CWE-22Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA.
Summary
Directory traversal vulnerability in DuxCMS 2.1 allows attackers to delete arbitrary files via /admin/AdminBackup/del.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00962 61st percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:duxcms_project:duxcms:2.1:*:*:*:*:*:*:* | 2.1 | Vulnerable | Duxcms Project |
- cpe:2.3:a:duxcms_project:duxcms:2.1:*:*:*:*:*:*:* Versions 2.1 Vulnerable ·Duxcms Project
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2020-21862
- 2026-10-03 Alias added: GHSA-vhjr-xhj8-wrqr
References
More Duxcms Project Duxcms vulnerabilities
- TI-2020-14194 File upload vulnerability in DuxCMS 2.1 allows attackers to execute arbitrary php code via duxcms/AdminUpload/upload. CVSS 3.1HIGH 8.8
- TI-2020-18808 annyshow DuxCMS cross-site request forgery CVSS 3.1HIGH 8.0
- TI-2020-14197 Cross Site Request Forgery (CSRF) vulnerability in admin.php in DuxCMS 2.1 allows remote… CVSS 3.1MEDIUM 6.5
- TI-2020-18932 Cross Site Scripting (XSS) vulnerability in DuxCMS 2.1 allows remote attackers to run… CVSS 3.1MEDIUM 5.4
- TI-2020-18807 annyshow DuxCMS Article edit cross site scripting CVSS 3.1MEDIUM 5.4
- TI-2021-02282 DuxCMS v3.1.3 was discovered to contain a SQL injection vulnerability via the component s/tools/SendTpl/index?keyword=. CVSS 3.1CRITICAL 9.8
Sources
- CVE-2020-21862 · CVE Program
- CVE-2020-21862 · NVD
- FIRST EPSS
- GHSA-vhjr-xhj8-wrqr · 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