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Not in CISA KEV
LOW severity

Information Disclosure in typo3/cms-install toolGHSA-p2jh-95jg-2w55

LOWFix: TYPO3/typo3@1a735da

GHSA-p2jh-95jg-2w55 is a low-severity (CVSS 3.7) Information Exposure vulnerability in typo3/cms-install. A fix is available for typo3/cms-install — see the affected versions and patch details below.

Also known asBIT-typo3-2023-47126CVE-2023-47126
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Nov 11, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

No confirmed exploitation observed yet

  • CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.

Exploitation and automatability from CISA’s SSVC triage for GHSA-p2jh-95jg-2w55.

EPSS Exploitation Probability

via FIRST.org ↗
0.7%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs52th percentile — riskier than 52% of all scored CVEsHighest risk
0.00%0.39%0.77%1.16%0.2%0.7%May 26Sep 26Nov 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

1 pkg affected
🐘typo3/cms-install

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Packagist packages — download data is not available via public APIs for these ecosystems.

Description

CVSS: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N/E:F/RL:O/RC:C (3.5)

Problem

The login screen of the standalone install tool discloses the full path of the transient data directory (e.g. /var/www/html/var/transient/). This applies to composer-based scenarios only - “classic” non-composer installations are not affected.

Solution

Update to TYPO3 version 12.4.8 that fixes the problem described above.

Credits

Thanks to Markus Klein who reported and fixed the issue.

References

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🐘Packagisttypo3/cms-install≥ 12.2.0&&< 12.4.812.4.8composer require typo3/cms-install:^12.4.8

Affected Products

1 product · 1 configurations
Application
typo3typo3
≥ 12.2.0 && < 12.4.8
range

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for typo3/cms-install, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update typo3/cms-install to 12.4.8 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-p2jh-95jg-2w55 is resolved across your whole dependency graph.

  3. Workarounds

    Assume what was exposed is already known: rotate any credential, token or key that the affected component could return, restrict the endpoint to callers that genuinely need it, and strip sensitive fields from responses and error output at the boundary rather than relying on the client not to read them.

Frequently Asked Questions

> ### CVSS: `CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N/E:F/RL:O/RC:C` (3.5) ### Problem The login screen of the standalone install tool discloses the full path of the transient data directory (e.g. _/var/www/html/var/transient/_). This applies to composer-based scenarios only - “classic” non-composer installations are not affected. ### Solution Update to TYPO3 version 12.4.8 that fixes the problem described above. ### Credits Thanks to Markus Klein who reported and fixed the issue. ### References * [TYPO3-CORE-SA-2023-005](https://typo3.org/security/advisory/typo3-core-sa-2023-005)
O3 Security · Impact-Aware SCA

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Information Disclosure in typo3/cms-install tool (Low 3.7)