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Fencer Intel
medium —

GHSA-hww5-6x85-mc24 json

Typo3 Arbitrary Code Execution and Cross-Site Scripting in Backend API

published 2y ago modified last yr.

cvss
—
not scored
cisa kev
Not listed
not in CISA's catalog
epss
—
no score, EPSS covers CVEs only
public exploits
0
none known

Summary

Backend API configuration using Page TSconfig is vulnerable to arbitrary code execution and cross-site scripting. TSconfig fields of page properties in backend forms can be used to inject malicious sequences. Field tsconfig_includes is vulnerable to directory traversal leading to same scenarios as having direct access to TSconfig settings.

A valid backend user account having access to modify values for fields pages.TSconfig and pages.tsconfig_includes is needed in order to exploit this vulnerability.

Patch / fix

  • packagist typo3/cms 8.7.27, 9.5.8

Is GHSA-hww5-6x85-mc24 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Affected packages

ecosystem package affected fixed in
packagist typo3/cms
>=8.0.0, <8.7.27
>=9.0.0, <9.5.8
8.7.27
9.5.8

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.