CVE-2015-6921

Cross-site scripting (XSS) vulnerability in the Zendesk Feedback Tab module 7.x-1.x before 7.x-1.1 for Drupal allows remote administrators with the "Configure Zendesk Feedback Tab" permission to inject arbitrary web script or HTML via unspecified vectors.

Published: 2015-09-11 Last update: 2026-05-06 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2015-6921 is rated Low Risk (28.3/100): CVSS Low severity, with low exploitation likelihood (EPSS 0.75%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

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-2015-6921

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 2026-06-15 0.32% 0.75% +0.43%
2 2025-03-19 0.38% 0.32% -0.06%
3 2025-03-17 — 0.38% —

Full EPSS history (5 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2015-6921

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
2.6 2.0 LOW
AV:N/AC:H/Au:N/C:N/I:P/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:H)
Exploitation requires uncommon or highly specific conditions.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:N)
No availability impact.
 4.9 2.9 [email protected]

Weakness enumeration for CVE-2015-6921

Affected software / configurations for CVE-2015-6921

Vendor Product Version Raw CPE
zendesk zendesk_feedback_tab 7.x-1.x cpe:2.3:a:zendesk:zendesk_feedback_tab:7.x-1.x:dev:*:*:*:drupal:*:*

References for CVE-2015-6921

cvelogic Threat Intelligence