An overly permissive CORS policy in Devolutions Server before 2021.1 and Devolutions…
Priority LOW 30CWE-346Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-346.
Summary
An overly permissive CORS policy in Devolutions Server before 2021.1 and Devolutions Server LTS before 2020.3.18 allows a remote attacker to leak cross-origin data via a crafted HTML page.
Why it matters now
EPSS 0.00587 48th 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 |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 2
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:devolutions:devolutions_server:*:*:*:*:lts:*:*:* | before 2020.3.18 | Vulnerable | Devolutions |
| cpe:2.3:a:devolutions:devolutions_server:*:*:*:*:-:*:*:* | before 2021.1 | Vulnerable | Devolutions |
- cpe:2.3:a:devolutions:devolutions_server:*:*:*:*:lts:*:*:* Versions before 2020.3.18 Vulnerable ·Devolutions
- cpe:2.3:a:devolutions:devolutions_server:*:*:*:*:-:*:*:* Versions before 2021.1 Vulnerable ·Devolutions
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-28048
- 2026-10-03 Alias added: GHSA-hcjf-gxg6-hwvr
References
More Devolutions Server vulnerabilities
- TI-2026-02787 Improper authentication in Devolutions Server CVSS 3.1CRITICAL 9.8
- TI-2026-02768 Improper input validation in Devolutions Server CVSS 3.1CRITICAL 9.8
- TI-2024-02729 Missing authentication in Devolutions Server CVSS 3.1CRITICAL 9.8
- TI-2026-02702 Improper Enforcement of Behavioral Controls in Devolutions Server 2025.3.15 and earlier… CVSS 3.1CRITICAL 9.8
- TI-2026-00411 SQL injection in Devolutions Server CVSS 3.1CRITICAL 9.8
- TI-2023-00904 SQL injection in Devolutions Server CVSS 3.1HIGH 8.8
Sources
- CVE-2021-28048 · CVE Program
- CVE-2021-28048 · NVD
- FIRST EPSS
- GHSA-hcjf-gxg6-hwvr · 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