CVE-2023-47127
Weak Authentication in Session Handling in typo3/cms-core
TYPO3 is an open source PHP based web content management system released under the GNU GPL. In typo3 installations there are always at least two different sites. Eg. first.example.org and second.example.com. In affected versions a session cookie generated for the first site can be reused on the second site without requiring additional authentication. This vulnerability has been addressed in versions 8.7.55, 9.5.44, 10.4.41, 11.5.33, and 12.4.8. Users are advised to upgrade. There are no known workarounds for this vulnerability.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
Weak Authentication in Session Handling in typo3/cms-core
TYPO3 is an open source PHP based web content management system released under the GNU GPL. In typo3 installations there are always at least two different sites. Eg. first.example.org and second.example.com. In affected versions a session cookie generated for the first site can be reused on the second site without requiring additional authentication. This vulnerability has been addressed in versions 8.7.55, 9.5.44, 10.4.41, 11.5.33, and 12.4.8. Users are advised to upgrade. There are no known workarounds for this vulnerability.
- Record
CVE-2023-47127- CVSS 3.1
- 4.2 Medium
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N - Weakness
- CWE-302
- Updated
- 2026-11-02
EUVDEUVD-2023-2865
TYPO3 is an open source PHP based web content management system released under the GNU GPL. In typo3 installations there are always at least two different sites. Eg. first.example.org and second.example.com. In affected versions a session cookie generated for the first site can be reused on the second site without requiring additional authentication. This vulnerability has been addressed in versions 8.7.55, 9.5.44, 10.4.41, 11.5.33, and 12.4.8. Users are advised to upgrade. There are no known workarounds for this vulnerability.
- Record
EUVD-2023-2865- CVSS 3.1
- 4.2 Medium
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-3vmm-7h4j-69rm
TYPO3 vulnerable to Weak Authentication in Session Handling
CVSS:
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N/E:X/RL:O/RC:C(4.0)
Problem
Given that there are at least two different sites in the same TYPO3 installation - for instance first.example.org and second.example.com - then a session cookie generated for the first site can be reused on the second site without requiring additional authentication.
This vulnerability primarily affects the frontend of the website. It's important to note that exploiting this vulnerability requires a valid user account.
Solution
Update to TYPO3 versions 8.7.55 ELTS, 9.5.44 ELTS, 10.4.41 ELTS, 11.5.33, 12.4.8 that fix the problem described above.
Credits
Thanks to Rémy Daniel who reported this issue, and to TYPO3 core & security team member Benjamin Franzke who fixed the issue.
References
- Record
GHSA-3vmm-7h4j-69rm- CVSS 3.1
- 4.2 Medium
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N - Weakness
- CWE-287, CWE-302
- Updated
- 2026-11-02
NVD
TYPO3 is an open source PHP based web content management system released under the GNU GPL. In typo3 installations there are always at least two different sites. Eg. first.example.org and second.example.com. In affected versions a session cookie generated for the first site can be reused on the second site without requiring additional authentication. This vulnerability has been addressed in versions 8.7.55, 9.5.44, 10.4.41, 11.5.33, and 12.4.8. Users are advised to upgrade. There are no known workarounds for this vulnerability.
- Record
CVE-2023-47127- CVSS 3.1
- 4.2 Medium
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N - CVSS 3.1
- 5.4 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N - Weakness
- CWE-302, CWE-287
- Updated
- 2026-11-02
OSV
Weak Authentication in Session Handling in typo3/cms-core
TYPO3 is an open source PHP based web content management system released under the GNU GPL. In typo3 installations there are always at least two different sites. Eg. first.example.org and second.example.com. In affected versions a session cookie generated for the first site can be reused on the second site without requiring additional authentication. This vulnerability has been addressed in versions 8.7.55, 9.5.44, 10.4.41, 11.5.33, and 12.4.8. Users are advised to upgrade. There are no known workarounds for this vulnerability.
- Record
CVE-2023-47127- CVSS 3.1
- 4.2 Medium
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N - Weakness
- CWE-302
- Updated
- 2026-11-02
OSVGHSA-3vmm-7h4j-69rm
TYPO3 vulnerable to Weak Authentication in Session Handling
CVSS:
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N/E:X/RL:O/RC:C(4.0)
Problem
Given that there are at least two different sites in the same TYPO3 installation - for instance first.example.org and second.example.com - then a session cookie generated for the first site can be reused on the second site without requiring additional authentication.
This vulnerability primarily affects the frontend of the website. It's important to note that exploiting this vulnerability requires a valid user account.
Solution
Update to TYPO3 versions 8.7.55 ELTS, 9.5.44 ELTS, 10.4.41 ELTS, 11.5.33, 12.4.8 that fix the problem described above.
Credits
Thanks to Rémy Daniel who reported this issue, and to TYPO3 core & security team member Benjamin Franzke who fixed the issue.
References
- Record
GHSA-3vmm-7h4j-69rm- CVSS 3.1
- 4.2 Medium
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N - Weakness
- CWE-287, CWE-302
- Updated
- 2026-11-02
OSVBIT-typo3-2023-47127 No score
TYPO3 is an open source PHP based web content management system released under the GNU GPL. In typo3 installations there are always at least two different sites. Eg. first.example.org and second.example.com. In affected versions a session cookie generated for the first site can be reused on the second site without requiring additional authentication. This vulnerability has been addressed in versions 8.7.55, 9.5.44, 10.4.41, 11.5.33, and 12.4.8. Users are advised to upgrade. There are no known workarounds for this vulnerability.
- Record
BIT-typo3-2023-47127- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
typo3/cms-corePackagist |
8.0.0 to 8.7.54 | 8.7.55 |
typo3/cms-corePackagist |
9.0.0 to 9.5.43 | 9.5.44 |
typo3/cms-corePackagist |
10.0.0 to 10.4.40 | 10.4.41 |
typo3/cms-corePackagist |
11.0.0 to 11.5.32 | 11.5.33 |
typo3/cms-corePackagist |
12.0.0 to 12.4.7 | 12.4.8 |
typo3Bitnami |
8.0.0 up to 8.7.55, 9.0.0 up to 9.5.44, 10.0.0 up to 10.4.41, 11.0.0 up to 11.5.33, 12.0.0 up to 12.4.8 | 8.7.559.5.4410.4.4111.5.3312.4.8 |
typo3/cms-corePackagist |
8.0.0 up to 8.7.55, plus listed versions v8.7.10v8.7.11v8.7.12v8.7.13v8.7.14 Show 21 moreShow lessv8.7.15v8.7.16v8.7.17v8.7.18v8.7.19v8.7.20v8.7.21v8.7.22v8.7.23v8.7.24v8.7.25v8.7.26v8.7.27v8.7.28v8.7.29v8.7.30v8.7.31v8.7.32v8.7.7v8.7.8v8.7.9 |
8.7.55 |
typo3/cms-corePackagist |
9.0.0 up to 9.5.44, plus listed versions v9.0.0v9.1.0v9.2.0v9.2.1v9.3.0 Show 36 moreShow lessv9.3.1v9.3.2v9.3.3v9.4.0v9.5.0v9.5.1v9.5.10v9.5.11v9.5.12v9.5.13v9.5.14v9.5.15v9.5.16v9.5.17v9.5.18v9.5.19v9.5.2v9.5.20v9.5.21v9.5.22v9.5.23v9.5.24v9.5.25v9.5.26v9.5.27v9.5.28v9.5.29v9.5.3v9.5.30v9.5.31v9.5.4v9.5.5v9.5.6v9.5.7v9.5.8v9.5.9 |
9.5.44 |
typo3/cms-corePackagist |
10.0.0 up to 10.4.41, plus listed versions v10.0.0v10.1.0v10.2.0v10.2.1v10.2.2 Show 38 moreShow lessv10.3.0v10.4.0v10.4.1v10.4.10v10.4.11v10.4.12v10.4.13v10.4.14v10.4.15v10.4.16v10.4.17v10.4.18v10.4.19v10.4.2v10.4.20v10.4.21v10.4.22v10.4.23v10.4.24v10.4.25v10.4.26v10.4.27v10.4.28v10.4.29v10.4.3v10.4.30v10.4.31v10.4.32v10.4.33v10.4.34v10.4.36v10.4.37v10.4.4v10.4.5v10.4.6v10.4.7v10.4.8v10.4.9 |
10.4.41 |
typo3/cms-corePackagist |
11.0.0 up to 11.5.33, plus listed versions v11.0.0v11.1.0v11.1.1v11.2.0v11.3.0 Show 37 moreShow lessv11.3.1v11.3.2v11.3.3v11.4.0v11.5.0v11.5.1v11.5.10v11.5.11v11.5.12v11.5.13v11.5.14v11.5.15v11.5.16v11.5.17v11.5.18v11.5.19v11.5.2v11.5.20v11.5.21v11.5.22v11.5.23v11.5.24v11.5.25v11.5.26v11.5.27v11.5.28v11.5.29v11.5.3v11.5.30v11.5.31v11.5.32v11.5.4v11.5.5v11.5.6v11.5.7v11.5.8v11.5.9 |
11.5.33 |
typo3/cms-corePackagist |
12.0.0 up to 12.4.8, plus listed versions v12.0.0v12.1.0v12.1.1v12.1.2v12.1.3 Show 10 moreShow lessv12.2.0v12.3.0v12.4.0v12.4.1v12.4.2v12.4.3v12.4.4v12.4.5v12.4.6v12.4.7 |
12.4.8 |
History
| Recorded | Changed | Sources |
|---|---|---|
| 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-2023-47127 is a medium vulnerability (CVSS 4.2) in Typo3, published November 14, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.56%, the 46th percentile. Fixed in typo3/cms-core 8.7.55.
References
github.com/TYPO3/typo3/security/advisories/GHSA-3vmm-7h4j-69rm
typo3.org/security/advisory/typo3-core-sa-2023-006
nvd.nist.gov/vuln/detail/CVE-2023-47127