MediumGHSA-3vmm-7h4j-69rmBIT-typo3-2023-47127CVE-2023-47127

TYPO3 vulnerable to Weak Authentication in Session Handling

Published 14 Nov 2023 · Updated 10 Sept 2026

Affected packages

typo3/cms-coreComposer
Affected
>=8.0.0 <8.7.55
Fixed in
8.7.55
Update to the fixed version for your release line, for example:composer require typo3/cms-core:^8.7.55
typo3/cms-coreComposer
Affected
>=9.0.0 <9.5.44
Fixed in
9.5.44
Update to the fixed version for your release line, for example:composer require typo3/cms-core:^9.5.44
typo3/cms-coreComposer
Affected
>=10.0.0 <10.4.41
Fixed in
10.4.41
Update to the fixed version for your release line, for example:composer require typo3/cms-core:^10.4.41
typo3/cms-coreComposer
Affected
>=11.0.0 <11.5.33
Fixed in
11.5.33
Update to the fixed version for your release line, for example:composer require typo3/cms-core:^11.5.33
typo3/cms-coreComposer
Affected
>=12.0.0 <12.4.8
Fixed in
12.4.8
Update to the fixed version for your release line, for example:composer require typo3/cms-core:^12.4.8

Details

> ### 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

Is GHSA-3vmm-7h4j-69rm in any of your client repos?

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References

Advisory data from OSV.dev (opens OSV.dev in a new tab), refreshed daily.