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Fencer Vulns
medium 4.7

CVE-2020-15241 json

Cross-Site Scripting in TYPO3 Fluid Engine

published 2020-10-08 6 y ago modified 2026-09-10 1 mo ago also BIT-typo3-2020-15241 , EUVD-2020-1418 , GHSA-7733-hjv6-4h47

cvss
4.7
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.0%
EPSS 1.0% chance of exploitation in 30 days, percentile 61%
public exploits
0
none known

Summary

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).

Patch / fix

  • packagist typo3fluid/fluid 2.0.5, 2.1.4, 2.2.1, 2.3.5, 2.4.1, 2.5.5, 2.6.1
  • packagist typo3/cms-core 8.7.25, 9.5.6
  • packagist typo3/cms 8.7.25, 9.5.6
  • typo3 fluid_engine 2.0.5, 2.1.4, 2.2.1, 2.3.5, 2.4.1, 2.5.5, 2.6.1

Exploit prediction

0.97% chance of exploitation in the next 30 days, higher than 61% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/TYPO3/Fluid/security/advisories/GHSA-7733-hjv6-4h47 referenced PoC, tagged "exploit" by a source, unverified
  • typo3.org https://typo3.org/security/advisory/typo3-core-sa-2019-013 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 4.7 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N
GitHub 3.1 4.7 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N
NVD 3.1 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:P/A:N
OSV 3.1 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected packages

ecosystem package affected fixed in
packagist typo3fluid/fluid
>=2.0.0, <2.0.5
>=2.1.0, <2.1.4
>=2.2.0, <2.2.1
>=2.3.0, <2.3.5
>=2.4.0, <2.4.1
>=2.5.0, <2.5.5
>=2.6.0, <2.6.1
2.0.5
2.1.4
2.2.1
2.3.5
2.4.1
2.5.5
2.6.1
packagist typo3/cms-core
>=8.0.0, <8.7.25
>=9.0.0, <9.5.6
8.7.25
9.5.6
packagist typo3/cms
>=8.0.0, <8.7.25
>=9.0.0, <9.5.6
8.7.25
9.5.6
bitnami typo3
>=8.7.25, <=8.7.25
>=9.5.6, <=9.5.6
 no fix listed

Affected products

  • TYPO3 Fluid

Classification

Weakness
  • CWE-601 URL Redirection to Untrusted Site
  • CWE-79 Improper Neutralization of Input During Web Page Generation

References

Sources

Fencer Vulns 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.