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CVE-2007-6321

23
FAUCET Score

CVE-2007-6321 describes a cross-site scripting (XSS) vulnerability in RoundCube webmail versions 0.1rc2 and earlier, specifically when accessed via Internet Explorer. This flaw allows remote attackers to inject arbitrary web script or HTML by crafting malicious style sheets containing expression commands. The vulnerability has a CVSS score of 4.3, indicating a medium attack complexity and potential for partial integrity impact, with no authentication required. While there is no evidence of active exploitation or inclusion in the KEV catalog, an ExploitDB entry exists, and the CVE has received minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 0.1CPE matchmatch criteria
cpe:2.3:a:roundcube:webmail:*:rc2:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

4.3MEDIUM

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

Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
5.44%
Probability of exploitation in next 30 days
EPSS Percentile
91.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
ExploitDB: EDB-30877 · Nov 10, 2007
This CVE's current EPSS score of 0.0544 is in the 90th percentile among its peer group of 19,958 CVEs.

Social Chatter

No social media mentions found for this CVE.

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

Remediation

Vendor Advisories (1)

redhatCVE-2007-6321Moderate

roundcubemail: XSS vulnerability

Dec 9, 2007

References

openmya.hacker.jp / hasegawa/security/expression.txt
Exploit
secunia.com / advisories/30734
securityreason.com / securityalert/3435
Exploit
exchange.xforce.ibmcloud.com / vulnerabilities/38981
trac.roundcube.net / ticket/1484701
Exploit
securityfocus.com / archive/1/484802/100/0/threaded
securityfocus.com / bid/26800
Exploit