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CVE-2009-0256

20
FAUCET Score

CVE-2009-0256 describes a session fixation vulnerability in TYPO3 versions 4.0.0-4.0.9, 4.1.0-4.1.7, and 4.2.0-4.2.3, affecting both frontend and backend authentication. With a CVSS score of 7.5, this vulnerability is considered highly severe, allowing remote attackers to hijack web sessions with low attack complexity and potential impacts on confidentiality, integrity, and availability. There is no evidence of active exploitation, nor are there publicly available exploit modules or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
4.0CPE matchmatch criteria
cpe:2.3:a:typo3:typo3:4.0:*:*:*:*:*:*:*
4.0.1CPE matchmatch criteria
cpe:2.3:a:typo3:typo3:4.0.1:*:*:*:*:*:*:*
4.0.2CPE matchmatch criteria
cpe:2.3:a:typo3:typo3:4.0.2:*:*:*:*:*:*:*
4.0.3CPE matchmatch criteria
cpe:2.3:a:typo3:typo3:4.0.3:*:*:*:*:*:*:*
4.0.4CPE matchmatch criteria
cpe:2.3:a:typo3:typo3:4.0.4:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.5HIGH

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

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
1.79%
Probability of exploitation in next 30 days
EPSS Percentile
76.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0179 is in the 59th percentile among its peer group of 51,553 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, 0.1 Bluesky, 0.1 Mastodon, and 0.4 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

Patch Available

Vendor Patches (3)

composerpatch availablevia ghsa
Product: typo3/cmsFixed in: 4.0.10
composerpatch availablevia ghsa
Product: typo3/cmsFixed in: 4.1.8
composerpatch availablevia ghsa
Product: typo3/cmsFixed in: 4.2.4

Vendor Advisories (1)

composerGHSA-q45q-5233-229phigh

Authentication library in TYPO3 vulnerable to session fixation

May 2, 2022

References

secunia.com / advisories/33617
Vendor Advisory
secunia.com / advisories/33679
exchange.xforce.ibmcloud.com / vulnerabilities/48133
typo3.org / teams/security/security-bulletins/typo3-sa-2009-001
Vendor Advisory
debian.org / security/2009/dsa-1711
securityfocus.com / bid/33376