Contao: Cross-site scripting in the comments bundle (contao contao)
En bref
- Source
- NVD
- EPSS
- EPSS 0.28 % · centile 20 ()
- État
- PUBLISHED
- Publiée
- Mise à jour
- Attribuée par
- GitHub_M
- Statut NVD
- Deferred
Description
Contao is an Open Source CMS. From version 4.0.0 until 5.3.50 and 5.7.12, an unauthenticated visitor can submit a comment whose email or website metadata is rendered without sufficient attribute and URL encoding by listComments() in comments-bundle/contao/dca/tl_comments.php. When a backend user opens the Comments module, attacker-controlled script can execute in the Contao backend origin under that user's session. Unpublished comments remain visible to moderators, so moderation does not prevent exposure. This issue is fixed in versions 5.3.50 and 5.7.12.
Faiblesses (CWE)
- CWE-79 — Injection de code indirecte (XSS)
- CWE-116 — Encodage ou échappement incorrect de la sortie
Références
Scores
| Version | Score | Vecteur | Évalué par |
|---|---|---|---|
| CVSS 3.1 | CRITICAL 9.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N | GitHub_M |
| CVSS 3.1 | CRITICAL 9.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N | NVD · security-advisories@github.com (Secondary) |
Avis
- GHSA-628f-v4f6-p37r — Contao: Cross-site scripting in the comments bundle
Références européennes
- ENISA EUVD · EUVD-2026-95975
- GCVE · GCVE-0-2026-107845
Produits affectés
| Produit | Versions |
|---|---|
| contao · contao | affected >= 4.0.0, < 5.3.50 ; affected >= 5.4.0-RC1, < 5.7.12 |
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 |