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CVE-2011-2904

17
FAUCET Score

CVE-2011-2904 describes a cross-site scripting (XSS) vulnerability in Zabbix versions prior to 1.8.6, specifically within the acknow.php component. An unauthenticated remote attacker could inject arbitrary web script or HTML via the 'backurl' parameter. This vulnerability has a CVSS score of 4.3, indicating a medium attack complexity and a partial impact on integrity, with no impact on confidentiality or availability. There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.8.5CPE matchmatch criteria
cpe:2.3:a:zabbix:zabbix:*:*:*:*:*:*:*:*
1.1CPE matchmatch criteria
cpe:2.3:a:zabbix:zabbix:1.1:*:*:*:*:*:*:*
1.1CPE matchmatch criteria
cpe:2.3:a:zabbix:zabbix:1.1:beta10:*:*:*:*:*:*
1.1CPE matchmatch criteria
cpe:2.3:a:zabbix:zabbix:1.1:beta11:*:*:*:*:*:*
1.1CPE matchmatch criteria
cpe:2.3:a:zabbix:zabbix:1.1:beta12:*:*:*:*:*:*

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
1.96%
Probability of exploitation in next 30 days
EPSS Percentile
78.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0196 is in the 62nd 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

Remediation records are not available for this CVE.

References

lists.fedoraproject.org / pipermail/package-announce/2011-August/063884.html
lists.fedoraproject.org / pipermail/package-announce/2011-August/063904.html
bugzilla.redhat.com / show_bug.cgi
secunia.com / advisories/45502
Vendor Advisory
secunia.com / advisories/45677
Vendor Advisory
exchange.xforce.ibmcloud.com / vulnerabilities/69025
support.zabbix.com / browse/ZBX-3835
Exploit
openwall.com / lists/oss-security/2011/08/08/2
openwall.com / lists/oss-security/2011/08/09/5
securityfocus.com / bid/49016
zabbix.com / rn1.8.6.php
Patch