CVE-2020-15241: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

October 8, 2020 (updated November 19, 2021)

TYPO3 Fluid Engine (package typo3fluid/fluid) before versions 2.0.5, 2.1.4, 2.2.1, 2.3.5, 2.4.1, 2.5.5 or 2.6.1 is vulnerable to cross-site scripting when making use of the ternary conditional operator in templates like {showFullName ? fullName : defaultValue}. Updated versions of this package are bundled in following TYPO3 (typo3/cms-core) versions as well: TYPO3 v8.7.25 (using typo3fluid/fluid v2.5.4) and TYPO3 v9.5.6 (using typo3fluid/fluid v2.6.1).

References

github.com/TYPO3/Fluid/commit/9ef6a8ffff2e812025fc0701b4ce72eea6911a3d
github.com/TYPO3/Fluid/security/advisories/GHSA-7733-hjv6-4h47
github.com/advisories/GHSA-7733-hjv6-4h47
nvd.nist.gov/vuln/detail/CVE-2020-15241
typo3.org/security/advisory/typo3-core-sa-2019-013

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