Contao has insufficient BBCode sanitizer (contao contao)

CVE-2024-28234

MEDIUM 4.3

At a glance

Source: NVD
EPSS: EPSS 0.57 % · percentile 47 (2026-11-01)
State: PUBLISHED
Published: 2024-04-09 13:59 UTC
Updated: 2024-08-02 00:48 UTC
Assigner: GitHub_M
NVD status: Analyzed

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Description

Contao is an open source content management system. Starting in version 2.0.0 and prior to versions 4.13.40 and 5.3.4, it is possible to inject CSS styles via BBCode in comments. Installations are only affected if BBCode is enabled. Contao versions 4.13.40 and 5.3.4 have a patch for this issue. As a workaround, disable BBCode for comments.

Weaknesses (CWE)

CWE-74 — Improper Neutralization of Special Elements in Output Used by a Downstream Component

References

Scores

Version	Score	Vector	Scored by
CVSS 3.1	MEDIUM 4.3	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N	GitHub_M
CVSS 3.1	MEDIUM 4.3	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N	NVD · security-advisories@github.com (Secondary)
CVSS 3.1	MEDIUM 4.7	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N	NVD · nvd@nist.gov (Primary)

Advisories

GHSA-j55w-hjpj-825g — Contao: Insufficient BBCode sanitizer

European references

ENISA EUVD · EUVD-2024-1227
GCVE · GCVE-0-2024-28234

Affected configurations (NVD CPE)

cpe:2.3:a:contao:contao:*:*:*:*:*:*:*:* ≥ 2.0 < 4.13.40
cpe:2.3:a:contao:contao:*:*:*:*:*:*:*:* ≥ 5.0.0 < 5.3.4

Affected products

Product	Versions
contao · contao	affected >= 2.0.0, < 4.13.40 ; affected >= 5.0.0, < 5.3.4

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD

🟡 Contao has insufficient BBCode sanitizer (contao contao)