CVE-2011-4628
Typo3 Authentication Bypass
TYPO3 before 4.3.12, 4.4.x before 4.4.9, and 4.5.x before 4.5.4 allows remote attackers to bypass authentication mechanisms in the backend through a crafted request.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
TYPO3 before 4.3.12, 4.4.x before 4.4.9, and 4.5.x before 4.5.4 allows remote attackers to bypass authentication mechanisms in the backend through a crafted request.
- Record
CVE-2011-4628- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 7.5 High
AV:N/AC:L/Au:N/C:P/I:P/A:P - Weakness
- CWE-287
- Updated
- 2026-11-02
CVE List No score
TYPO3 before 4.3.12, 4.4.x before 4.4.9, and 4.5.x before 4.5.4 allows remote attackers to bypass authentication mechanisms in the backend through a crafted request.
- Record
CVE-2011-4628- Updated
- 2026-11-02
EUVDEUVD-2022-1663 No score
TYPO3 before 4.3.12, 4.4.x before 4.4.9, and 4.5.x before 4.5.4 allows remote attackers to bypass authentication mechanisms in the backend through a crafted request.
- Record
EUVD-2022-1663- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-79gv-5cgx-x6rx
Typo3 Authentication Bypass
TYPO3 before 4.3.12, 4.4.x before 4.4.9, and 4.5.x before 4.5.4 allows remote attackers to bypass authentication mechanisms in the backend through a crafted request.
- Record
GHSA-79gv-5cgx-x6rx- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-287
- Updated
- 2026-11-02
OSVGHSA-79gv-5cgx-x6rx
Typo3 Authentication Bypass
TYPO3 before 4.3.12, 4.4.x before 4.4.9, and 4.5.x before 4.5.4 allows remote attackers to bypass authentication mechanisms in the backend through a crafted request.
- Record
GHSA-79gv-5cgx-x6rx- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-287
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
typo3/cmsPackagist |
before 4.3.12 | 4.3.12 |
typo3/cmsPackagist |
4.4.0 up to 4.4.9 | 4.4.9 |
typo3/cmsPackagist |
4.5.0 up to 4.5.4 | 4.5.4 |
typo3-srcDebian:5.0 From an advisory covering 12 CVEs |
before 4.2.5-1+lenny8, plus listed versions 4.2.5-14.2.5-1+lenny14.2.5-1+lenny24.2.5-1+lenny34.2.5-1+lenny44.2.5-1+lenny54.2.5-1+lenny6 |
4.2.5-1+lenny8 |
typo3-srcDebian:6.0 From an advisory covering 12 CVEs |
before 4.3.9+dfsg1-1+squeeze1, plus listed versions 4.3.9+dfsg1-1 |
4.3.9+dfsg1-1+squeeze1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, facts | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2011-4628 is a critical vulnerability (CVSS 9.8) in Typo3, published August 7, 2011. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.65%, the 76th percentile. Fixed in typo3/cms 4.3.12.