CVE-2013-6853

Cross-site scripting (XSS) vulnerability in clickstream.js in Y! Toolbar plugin for FireFox 3.1.0.20130813024103 for Mac, and 2.5.9.2013418100420 for Windows, allows remote attackers to inject arbitrary web script or HTML via a crafted URL that is stored by the victim.

Published: 2014-01-26 Last update: 2026-04-29 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2013-6853 is rated Low Risk (37.8/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 0.25%). 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-2013-6853

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 2023-03-07 1.21% 0.25% -0.96%
2 2022-02-04 — 1.21% —

Full EPSS history (2 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2013-6853

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
4.3 2.0 MEDIUM
AV:N/AC:M/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:M)
Exploitation needs some favorable conditions, but not exceptional ones.
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.
 8.6 2.9 [email protected]

Weakness enumeration for CVE-2013-6853

Affected software / configurations for CVE-2013-6853

Vendor Product Version Raw CPE
yahoo toolbar 3.1.0.20130813024103 cpe:2.3:a:yahoo:toolbar:3.1.0.20130813024103:*:*:*:*:*:*:*
yahoo toolbar 2.5.9.2013418100420 cpe:2.3:a:yahoo:toolbar:2.5.9.2013418100420:*:*:*:*:*:*:*

References for CVE-2013-6853

cvelogic Threat Intelligence