CVE-2009-4102

Sage 1.4.3 and earlier extension for Firefox performs certain operations with chrome privileges, which allows remote attackers to execute arbitrary commands and perform cross-domain scripting attacks via the description tag of an RSS feed.

Published: 2009-11-29 Last update: 2026-04-23 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2009-4102 is rated Moderate Risk (63.2/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 1.46%). 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-2009-4102

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 3.08% 1.46% -1.62%
2 2025-03-29 1.46% 3.08% +1.62%
3 2025-03-17 — 1.46% —

Full EPSS history (5 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2009-4102

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.3 2.0 HIGH
AV:N/AC:M/Au:N/C:C/I:C/A:C 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:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 8.6 10.0 [email protected]

Weakness enumeration for CVE-2009-4102

OS Trackers for CVE-2009-4102

vendor priority summary link
ubuntu medium CVE-2009-4102 medium priority: Ubuntu including 1 source packages (firefox-sage), 10 status rows across 10 suites (dapper, hardy, intrepid, jaunty, karmic, lucid, maverick, natty, oneiric, upstream): DNE 5, ignored 4, needs-triage 1. https://ubuntu.com/security/CVE-2009-4102

NVD evaluator notes for CVE-2009-4102

Impact: Per info from the following advisory: http://www.net-security.org/secworld.php?id=8527 Scored this CVE CIA:complete

Affected software / configurations for CVE-2009-4102

Vendor Product Version Raw CPE
sage.mozdev sage <= 1.4.3 cpe:2.3:a:sage.mozdev:sage:*:*:*:*:*:*:*:*
sage.mozdev sage 1.3.8 cpe:2.3:a:sage.mozdev:sage:1.3.8:*:*:*:*:*:*:*
mozilla firefox — cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*

References for CVE-2009-4102

cvelogic Threat Intelligence