CVE-2017-15881

Cross-Site Scripting vulnerability in KeystoneJS before 4.0.0-beta.7 allows remote authenticated administrators to inject arbitrary web script or HTML via the "content brief" or "content extended" field, a different vulnerability than CVE-2017-15878.

Published: 2017-10-24 Last update: 2026-05-13 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2017-15881 is rated Moderate Risk (40.8/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 0.47%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2017-15881

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-03-30 0.38% 0.47% +0.08%
2 2025-03-29 0.47% 0.38% -0.08%
3 2025-03-17 — 0.47% —

Full EPSS history (7 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2017-15881

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
4.8 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:H)
They need powerful rights—admin, root, or similar—before this pays off.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:N)
Service keeps running; no real outage angle.
 1.7 2.7 [email protected]
3.5 2.0 LOW
AV:N/AC:M/Au:S/C:N/I:P/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:S)
A single authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:N)
No availability impact.
 6.8 2.9 [email protected]

Weakness enumeration for CVE-2017-15881

GitHub Security Advisory for CVE-2017-15881

GHSA-7cv6-gvx3-m54m · Severity: medium · Ecosystem: npm — Cross-Site Scripting in keystone

Affected software / configurations for CVE-2017-15881

Vendor Product Version Raw CPE
keystonejs keystone <= 0.3.22 cpe:2.3:a:keystonejs:keystone:*:*:*:*:*:node.js:*:*
keystonejs keystone 4.0.0 cpe:2.3:a:keystonejs:keystone:4.0.0:-:*:*:*:node.js:*:*
keystonejs keystone 4.0.0 cpe:2.3:a:keystonejs:keystone:4.0.0:beta1:*:*:*:node.js:*:*
keystonejs keystone 4.0.0 cpe:2.3:a:keystonejs:keystone:4.0.0:beta2:*:*:*:node.js:*:*
keystonejs keystone 4.0.0 cpe:2.3:a:keystonejs:keystone:4.0.0:beta3:*:*:*:node.js:*:*
keystonejs keystone 4.0.0 cpe:2.3:a:keystonejs:keystone:4.0.0:beta4:*:*:*:node.js:*:*
keystonejs keystone 4.0.0 cpe:2.3:a:keystonejs:keystone:4.0.0:beta5:*:*:*:node.js:*:*

References for CVE-2017-15881

URL Tags
http://blog.securelayer7.net/keystonejs-open-source-penetration-testing-report/ Issue Tracking Third Party Advisory
http://www.securityfocus.com/bid/101541 Third Party Advisory VDB Entry
https://github.com/keystonejs/keystone/issues/4437 Issue Tracking Third Party Advisory
https://github.com/keystonejs/keystone/pull/4478 Issue Tracking Patch Third Party Advisory
cvelogic Threat Intelligence