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CVE-2009-4102

25
FAUCET Score

CVE-2009-4102 describes a critical vulnerability in Sage 1.4.3 and earlier, a Firefox extension, where it improperly handles RSS feed descriptions with chrome privileges. This flaw allows remote attackers to execute arbitrary commands and conduct cross-domain scripting attacks. With a CVSS score of 9.3, this vulnerability is highly severe, indicating a network-based attack with medium complexity that could lead to complete compromise of confidentiality, integrity, and availability. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.4.3CPE matchmatch criteria
cpe:2.3:a:sage.mozdev:sage:*:*:*:*:*:*:*:*
1.3.8CPE matchmatch criteria
cpe:2.3:a:sage.mozdev:sage:1.3.8:*:*:*:*:*:*:*
All Versions ImpactedCPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

9.3HIGH

AV:N/AC:M/Au:N/C:C/I:C/A:C

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
10.0
CvssVersion
2.0

Exploit Intelligence

EPSS Score
3.39%
Probability of exploitation in next 30 days
EPSS Percentile
87.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0339 is in the 47th percentile among its peer group of 8,914 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

forums.mozillazine.org / viewtopic.php
jvndb.jvn.jp / jvndb/JVNDB-2011-000070
jvn.jp / en/jp/JVN99203127/index.html
secunia.com / advisories/37466
Vendor Advisory
exchange.xforce.ibmcloud.com / vulnerabilities/54396
debian.org / security/2009/dsa-1951
net-security.org / secworld.php
securityfocus.com / bid/37120
vupen.com / english/advisories/2009/3324
Vendor Advisory