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CVE-2012-5566

18
FAUCET Score

CVE-2012-5566 describes multiple cross-site scripting (XSS) vulnerabilities in Horde Kronolith Calendar Application H4 before version 3.0.17 and Horde Groupware Webmail Edition before 4.0.8. These flaws allow remote attackers to inject malicious web scripts or HTML, specifically through the tasks or search views. The vulnerability has a CVSS score of 4.3 (medium severity), indicating a network-based attack with medium complexity and a potential impact of partial information disclosure. There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 3.0.16CPE matchmatch criteria
cpe:2.3:a:horde:kronolith_h4:*:*:*:*:*:*:*:*
3.0CPE matchmatch criteria
cpe:2.3:a:horde:kronolith_h4:3.0:*:*:*:*:*:*:*
3.0CPE matchmatch criteria
cpe:2.3:a:horde:kronolith_h4:3.0:alpha1:*:*:*:*:*:*
3.0CPE matchmatch criteria
cpe:2.3:a:horde:kronolith_h4:3.0:beta1:*:*:*:*:*:*
3.0CPE matchmatch criteria
cpe:2.3:a:horde:kronolith_h4:3.0:rc1:*:*:*:*:*:*

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
2.46%
Probability of exploitation in next 30 days
EPSS Percentile
82.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0246 is in the 73rd percentile among its peer group of 19,956 CVEs.

Social Chatter

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 Patches (1)

github_advisoryvendor investigatingvia nvd_reference
View patch

References

bugs.horde.org / ticket/11189
git.horde.org / horde-git/-/commit/1228a6825a8dab3333d0a8c8986fc10d1f3d11b2
lists.horde.org / archives/announce/2012/000773.html
Vendor Advisory
lists.opensuse.org / opensuse-updates/2012-12/msg00019.html
secunia.com / advisories/51469
Vendor Advisory
securitytracker.com / id
github.com / horde/horde/blob/master/kronolith/docs/CHANGES
Vendor Advisory
openwall.com / lists/oss-security/2012/11/23/3
openwall.com / lists/oss-security/2012/11/23/7
osvdb.org / 82371
osvdb.org / 82382
securityfocus.com / bid/56541