CVE-2017-15878

MEDIUM

KeystoneJS < 4.0.0 - Stored Cross-Site Scripting via Contact Us Feature

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2017-15878. PoCs published by Ishaq Mohammed.

AI-analyzed exploit summary This exploit demonstrates an unauthenticated stored XSS vulnerability in KeystoneJS 4.0.0-beta.5 via the Contact Us feature. The payload is injected into the message field and triggers when an admin views the record.

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.

Exploits (1)

exploitdb WORKING POC
by Ishaq Mohammed · textwebappsnodejs
https://www.exploit-db.com/exploits/43054

This exploit demonstrates an unauthenticated stored XSS vulnerability in KeystoneJS 4.0.0-beta.5 via the Contact Us feature. The payload is injected into the message field and triggers when an admin views the record.

Classification
Working Poc 100%
Attack Type
Xss
Complexity
Trivial
Reliability
Reliable
Target: KeystoneJS before 4.0.0-beta.7
No auth needed
Prerequisites: Access to the Contact Us page
MITRE ATT&CK
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (5)

Core 5
Core References
Issue Tracking, Patch, Third Party Advisory x_refsource_confirm
https://github.com/keystonejs/keystone/pull/4478
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/101541
Exploit, Issue Tracking, Patch, Third Party Advisory, VDB Entry exploit x_refsource_exploit-db
https://www.exploit-db.com/exploits/43054/
Issue Tracking, Third Party Advisory x_refsource_misc
http://blog.securelayer7.net/keystonejs-open-source-penetration-testing-report/
Exploit, Issue Tracking, Patch, Third Party Advisory, VDB Entry x_refsource_misc
https://packetstormsecurity.com/files/144756/KeystoneJS-4.0.0-beta.5-Unauthenticated-Stored-Cross-Site-Scripting.html

Scores

CVSS v3 6.1
EPSS 0.0360
EPSS Percentile 88.1%
Attack Vector NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Details

CWE
CWE-79
Status published
Products (2)
keystonejs/keystone < 4.0.0
npm/keystone 0 - 4.0.0npm
Published Oct 24, 2017
Tracked Since Feb 18, 2026