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CVE-2020-27509

MEDIUM
5.4
CVSS Score
Published: June 26, 2022 at 12:33 PM UTC
Updated: July 9, 2026 at 01:16 AM UTC
1 product affected across 1 vendorGalaxkey

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Severity
MEDIUM5.4
Exploit prediction
EPSS 0.6%

Description

Persistent XSS in Galaxkey Secure Mail Client in Galaxkey up to 5.6.11.5 allows an attacker to perform an account takeover by intercepting the HTTP Post request when sending an email and injecting a specially crafted XSS payload in the 'subject' field. The payload executes when the recipient logs into their mailbox.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Galaxkey· Galaxkey
95%
v < 5.6.11.5
Affected range stops below 5.6.11.5, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (3)

Source: [email protected]
http://galaxkey.com
Source: [email protected]
https://medium.com/%40tomhulme_74888/persistent-cross-site-scripting-leading-to-full-account-takeover-on-galaxkey-v5-6-11-4-8bf96be35b54
Source: cverecord
https://medium.com/@tomhulme_74888/persistent-cross-site-scripting-leading-to-full-account-takeover-on-galaxkey-v5-6-11-4-8bf96be35b54

CVSS

5.4MEDIUM[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-79

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