What’s Vulnerable › Vulnerabilities

CVE-2017-15878

• Severity: medium (CVSS 6.1 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 3.4% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2017-10-24 · updated 2026-06-17
• Weakness: CWE-79

Description

A cross-site scripting (XSS) vulnerability exists in fields/types/markdown/MarkdownType.js in KeystoneJS before 4.0.0-beta.7 via the Contact Us feature.

Affected products

• keystonejs keystone: before 4.0.0 — fixed in 4.0.0

How to fix

Upgrade to a fixed version: keystonejs keystone 4.0.0. Check the vendor advisory for mitigations.

References

• http://blog.securelayer7.net/keystonejs-open-source-penetration-testing-report/
• http://www.securityfocus.com/bid/101541
• https://github.com/keystonejs/keystone/pull/4478
• https://packetstormsecurity.com/files/144756/KeystoneJS-4.0.0-beta.5-Unauthenticated-Stored-Cross-Site-Scripting.html
• https://www.exploit-db.com/exploits/43054/
• http://blog.securelayer7.net/keystonejs-open-source-penetration-testing-report/
• http://www.securityfocus.com/bid/101541
• https://github.com/keystonejs/keystone/pull/4478
• https://packetstormsecurity.com/files/144756/KeystoneJS-4.0.0-beta.5-Unauthenticated-Stored-Cross-Site-Scripting.html
• https://www.exploit-db.com/exploits/43054/

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