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CVE-2009-4151

17
FAUCET Score

CVE-2009-4151 describes a session fixation vulnerability in Best Practical Solutions RT versions 3.0.0 through 3.6.9 and 3.8.x through 3.8.5. This flaw allows remote attackers to hijack web sessions by manipulating the session identifier through HTTP access to the RT server. The vulnerability has a CVSS score of 5.8, indicating a medium severity, with a network attack vector, medium attack complexity, and potential for partial confidentiality and integrity impact. 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
3.0.1CPE matchmatch criteria
cpe:2.3:a:bestpractical:rt:3.0.1:*:*:*:*:*:*:*
3.0.2CPE matchmatch criteria
cpe:2.3:a:bestpractical:rt:3.0.2:*:*:*:*:*:*:*
3.0.3CPE matchmatch criteria
cpe:2.3:a:bestpractical:rt:3.0.3:*:*:*:*:*:*:*
3.0.4CPE matchmatch criteria
cpe:2.3:a:bestpractical:rt:3.0.4:*:*:*:*:*:*:*
3.0.5CPE matchmatch criteria
cpe:2.3:a:bestpractical:rt:3.0.5:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.8MEDIUM

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

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
NONE
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
4.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
1.84%
Probability of exploitation in next 30 days
EPSS Percentile
76.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0184 is in the 57th 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-2009-4151Low

rt3: web sessions hijack

Nov 20, 2009

References

bestpractical.typepad.com / files/rt-3.0.0-session_fixation.v3.patch
Patch
bestpractical.typepad.com / files/rt-3.0.1-3.0.6-session_fixation.v3.patch
Patch
bestpractical.typepad.com / files/rt-3.0.7-3.6.1-session_fixation.v3.patch
Patch
bestpractical.typepad.com / files/rt-3.6.2-3.6.3-session_fixation.v3.patch
Patch
bestpractical.typepad.com / files/rt-3.6.4-3.6.9-session_fixation.v2.patch
Patch
bestpractical.typepad.com / files/rt-3.8-session_fixation.patch
Patch
blog.bestpractical.com / 2009/11/session-fixation-vulnerability.html
Patch
lists.bestpractical.com / pipermail/rt-announce/2009-November/000176.html
Patch
lists.bestpractical.com / pipermail/rt-announce/2009-November/000177.html
Patch
secunia.com / advisories/37546
Vendor Advisory
secunia.com / advisories/37728
exchange.xforce.ibmcloud.com / vulnerabilities/54472
redhat.com / archives/fedora-package-announce/2009-December/msg00761.html
redhat.com / archives/fedora-package-announce/2009-December/msg00794.html
redhat.com / archives/fedora-package-announce/2009-December/msg00832.html
securityfocus.com / bid/37162
Patch