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MEDIUM severity

TYPO3 CMS Stored Cross-Site Scripting via FileDumpControllerGHSA-9c6w-55cp-5w25

MEDIUMFix: TYPO3/typo3@5462084

GHSA-9c6w-55cp-5w25 is a medium-severity (CVSS 5.4) Cross-site Scripting (XSS) vulnerability in typo3/cms-core. A fix is available for typo3/cms-core — see the affected versions and patch details below.

Also known asBIT-typo3-2022-36107CVE-2022-36107
Published
Updated
Affected
7 pkgs
Patched
7 / 7
Exploits
None indexed
Exploitation data as of Nov 12, 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-9c6w-55cp-5w25.

EPSS Exploitation Probability

via FIRST.org ↗
1.0%probability of exploitation in next 30 days
Lower Risk+0.02%
Lower risk than most CVEs62th percentile — riskier than 62% of all scored CVEsHighest risk
0.19%0.61%1.03%1.45%0.7%1.0%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

7 pkgs affected
🐘typo3/cms-core🐘typo3/cms-core🐘typo3/cms-core🐘typo3/cms-core🐘typo3/cms-core🐘typo3/cms🐘typo3/cms

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

Meta

  • CVSS: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N/E:F/RL:O/RC:C (5.0)

Problem

It has been discovered that the FileDumpController (backend and frontend context) is vulnerable to cross-site scripting when malicious files are displayed using this component. A valid backend user account is needed to exploit this vulnerability.

Solution

Update to TYPO3 version 7.6.58 ELTS, 8.7.48 ELTS, 9.5.37 ELTS, 10.4.32 or 11.5.16 that fix the problem described above.

Credits

Thanks to Vautia who reported this issue and to TYPO3 core & security team member Oliver Hader who fixed the issue.

References

Affected Packages

7 total 7 fixed
EcosystemPackageVulnerable rangeFix
🐘Packagisttypo3/cms-core≥ 7.0.0&&< 7.6.587.6.58composer require typo3/cms-core:^7.6.58
🐘Packagisttypo3/cms-core≥ 8.0.0&&< 8.7.488.7.48composer require typo3/cms-core:^8.7.48
🐘Packagisttypo3/cms-core≥ 9.0.0&&< 9.5.379.5.37composer require typo3/cms-core:^9.5.37
🐘Packagisttypo3/cms-core≥ 10.0.0&&< 10.4.3210.4.32composer require typo3/cms-core:^10.4.32
🐘Packagisttypo3/cms-core≥ 11.0.0&&< 11.5.1611.5.16composer require typo3/cms-core:^11.5.16
🐘Packagisttypo3/cms≥ 10.0.0&&< 10.4.3210.4.32composer require typo3/cms:^10.4.32

Affected Products

1 product · 5 configurations
Application
typo3typo3
≥ 11.0.0 && ≤ 11.5.15
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-core, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update typo3/cms-core to 7.6.58 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-9c6w-55cp-5w25 is resolved across your whole dependency graph.

  3. Workarounds

    Escape or sanitise the affected output on the server side rather than relying on client-side filtering, and add a Content-Security-Policy that blocks inline script execution so injected markup cannot run even if it reaches the page.

Frequently Asked Questions

> ### Meta > * CVSS: `CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N/E:F/RL:O/RC:C` (5.0) ### Problem It has been discovered that the `FileDumpController` (backend and frontend context) is vulnerable to cross-site scripting when malicious files are displayed using this component. A valid backend user account is needed to exploit this vulnerability. ### Solution Update to TYPO3 version 7.6.58 ELTS, 8.7.48 ELTS, 9.5.37 ELTS, 10.4.32 or 11.5.16 that fix the problem described above. ### Credits Thanks to Vautia who reported this issue and to TYPO3 core & security team member Oliver Hader who fixe
O3 Security · Impact-Aware SCA

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