Home/CVE/Contao is an open source content management system. Starting in version 4.0.0 and prior to version 4.13.40 and 5.3.4, it
CVE

CVE-2024-28191

Contao is an open source content management system. Starting in version 4.0.0 and prior to version 4.13.40 and 5.3.4, it

Contao is an open source content management system. Starting in version 4.0.0 and prior to version 4.13.40 and 5.3.4, it is possible to inject insert tags in frontend forms if the output is structured in a very specific way. Contao versions 4.13.40 and 5.3.4 have a patch for this issue.

As a workaround, do not output user data from frontend forms next to each other, always separate them by at least one character.

LOW · CVSS 3.1 EPSS 0.00988
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
▤

Affected Products & Versions

2
contao>= 4.0.0 and < 4.13.40
contao>= 5.0.0 and < 5.3.4
▤

Affected Packages

1
Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
Packagist contao/core-bundle LOW fixed in 4.13.40
▣

Scoring & Timeline

3.1
LOW · CVSS v3.1 · security-advisories@github.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD09 Apr 2024 · 02:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
🔗

References & Sources

4
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://contao.org/en/security-advisories/insert-tag-injection-via-the-form-generatorVendor Advisory
https://github.com/contao/contao/commit/388859dcf110ca70e0fae68a2a5579ab6a702919Patch
https://github.com/contao/contao/commit/474a2fc25f1d84d786aba8c6d234af99e64d016bPatch
https://github.com/contao/contao/security/advisories/GHSA-747v-52c4-8vj8Vendor Advisory
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