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Vulnerability record · CVE-2017-15878 · published 24 October 2017

CVE-2017-15878: Keystonejs keystone cross-site scripting vulnerability

Keystonejs · Keystone

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.

6.1 CVSS 3.0 Medium EPSS 3.4% · top 11.5% CWE-79 · Cross-site scripting
6.1CVSS 3.0 base score, v2 4.3
3.4%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
10References, 4 tagged exploit
17 Jun 2026Last modified by NVD

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/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://blog.securelayer7.net/keystonejs-open-source-penetration-testing-report/ Issue TrackingThird Party Advisory
http://www.securityfocus.com/bid/101541 Third Party AdvisoryVDB Entry
https://github.com/keystonejs/keystone/pull/4478 Issue TrackingPatchThird Party Advisory
https://packetstormsecurity.com/files/144756/KeystoneJS-4.0.0-beta.5-Unauthenticated-Stored-Cross-Site-Scripting.html ExploitIssue TrackingPatchThird Party AdvisoryVDB Entry
https://www.exploit-db.com/exploits/43054/ ExploitIssue TrackingPatchThird Party AdvisoryVDB Entry
http://blog.securelayer7.net/keystonejs-open-source-penetration-testing-report/ Issue TrackingThird Party Advisory
http://www.securityfocus.com/bid/101541 Third Party AdvisoryVDB Entry
https://github.com/keystonejs/keystone/pull/4478 Issue TrackingPatchThird Party Advisory
https://packetstormsecurity.com/files/144756/KeystoneJS-4.0.0-beta.5-Unauthenticated-Stored-Cross-Site-Scripting.html ExploitIssue TrackingPatchThird Party AdvisoryVDB Entry
https://www.exploit-db.com/exploits/43054/ ExploitIssue TrackingPatchThird Party AdvisoryVDB Entry

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2017-15878), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.