CVE-2020-27509
Persistent XSS in Galaxkey Secure Mail Client in Galaxkey up to 5.6.11.5 allows an attacker to...
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- Required
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2020-27509- CVSS 3.1
- 5.4 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N - CVSS 2.0
- 3.5 Low
AV:N/AC:M/Au:S/C:N/I:P/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2020-27509- Updated
- 2026-11-02
EUVDEUVD-2020-20019 No score
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.
- Record
EUVD-2020-20019- Updated
- 2026-11-02
GitHub AdvisoriesGHSA-7g3q-7795-xgcj
Persistent XSS in Galaxkey Secure Mail Client in Galaxkey up to 5.6.11.5 allows an attacker to...
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.
- Record
GHSA-7g3q-7795-xgcj- CVSS 3.1
- 5.4 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2020-27509 is a medium vulnerability (CVSS 5.4) in Galaxkey, published June 26, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.58%, the 47th percentile. No source names a fixed version.
References
medium.com/@tomhulme_74888/persistent-cross-site-scripting-leading-to-full-account-takeover-on-galaxkey-v5-6-11-4-8bf96be35b54
nvd.nist.gov/vuln/detail/CVE-2020-27509
galaxkey.com
github.com/advisories/GHSA-7g3q-7795-xgcj