CVE-2017-15878
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.
Does this matter?
A public exploit is published in Exploit-DB, so the technical barrier is gone even though the severity is medium and EPSS is 3.4%. Treat it as high on anything reachable from the internet.
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.
- CVSS 3.0
- 6.1 MEDIUMCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- EPSS
- 3.42% probability · 89th percentile
- Public exploits
- 1 in Exploit-DB · first 25 October 2017
- CISA KEV
- Not listed
- Weakness
- CWE-79
- Affected
- keystonejs/keystone
- Source
- cve@mitre.org
EPSS 3.4% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
Public exploits (1)
Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.
References
- http://blog.securelayer7.net/keystonejs-open-source-penetration-testing-report/Issue Tracking, Third Party Advisory
- http://www.securityfocus.com/bid/101541Third Party Advisory, VDB Entry
- https://github.com/keystonejs/keystone/pull/4478Issue Tracking, Patch, Third Party Advisory
- https://packetstormsecurity.com/files/144756/KeystoneJS-4.0.0-beta.5-Unauthenticated-Stored-Cross-Site-Scripting.htmlExploit, Issue Tracking, Patch, Third Party Advisory, VDB Entry
- https://www.exploit-db.com/exploits/43054/Exploit, Issue Tracking, Patch, Third Party Advisory, VDB Entry
- http://blog.securelayer7.net/keystonejs-open-source-penetration-testing-report/Issue Tracking, Third Party Advisory
- http://www.securityfocus.com/bid/101541Third Party Advisory, VDB Entry
- https://github.com/keystonejs/keystone/pull/4478Issue Tracking, Patch, Third Party Advisory
- https://packetstormsecurity.com/files/144756/KeystoneJS-4.0.0-beta.5-Unauthenticated-Stored-Cross-Site-Scripting.htmlExploit, Issue Tracking, Patch, Third Party Advisory, VDB Entry
- https://www.exploit-db.com/exploits/43054/Exploit, Issue Tracking, Patch, Third Party Advisory, VDB Entry
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.