CVE-2021-28048

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-04-14 · updated 2026-06-17
Weakness: CWE-346

Description

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.

Affected products

Devolutions Server: before 2020.3.18; before 2021.1 — fixed in 2020.3.18, 2021.1

How to fix

Upgrade to a fixed version: Devolutions Server 2020.3.18, 2021.1. Check the vendor advisory for mitigations.

References

https://devolutions.net/security/advisories/DEVO-2021-0004
https://devolutions.net/security/advisories/DEVO-2021-0004

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