299Ko's public contact form (plugin/contact/controllers/ContactController.php, home()) sets raw POST field values (name, firstname, email, message) into the page template with no sanitization. The template engine's variable output function (common/Template.php, _show_var()) echoes values with no htmlspecialchars() call, and the sink template (contact.tpl) outputs these values unescaped into an HTML attribute and a textarea. An unauthenticated attacker can submit a payload such as name="><script>alert(document.domain)</script> to achieve reflected XSS against any visitor who submits or is tricked into auto-submitting the form, including a targeted administrator, enabling session token theft.
Metrics
Affected Vendors & Products
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OpenCVE Enrichment is a feature of OpenCVE that uses AI to automatically link vendors and products to CVEs. Learn more on GitHub.
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References
| Link | Providers |
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| https://github.com/search?q=299ko&type=repositories |
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History
Wed, 05 Aug 2026 14:30:00 +0000
| Type | Values Removed | Values Added |
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| Metrics |
ssvc
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Wed, 05 Aug 2026 11:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | 299Ko's public contact form (plugin/contact/controllers/ContactController.php, home()) sets raw POST field values (name, firstname, email, message) into the page template with no sanitization. The template engine's variable output function (common/Template.php, _show_var()) echoes values with no htmlspecialchars() call, and the sink template (contact.tpl) outputs these values unescaped into an HTML attribute and a textarea. An unauthenticated attacker can submit a payload such as name="><script>alert(document.domain)</script> to achieve reflected XSS against any visitor who submits or is tricked into auto-submitting the form, including a targeted administrator, enabling session token theft. | |
| Title | 299Ko: Unauthenticated Reflected XSS in Public Contact Form | |
| Weaknesses | CWE-79 | |
| References |
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| Metrics |
cvssV3_1
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MITRE
Status: PUBLISHED
Assigner: TuranSec
Published:
Updated: 2026-08-05T13:38:12.986Z
Reserved: 2026-08-05T10:53:53.177Z
Link: CVE-2026-71249
Vulnrichment
Updated: 2026-08-05T13:37:40.752Z
NVD
No data.
Redhat
No data.
OpenCVE Enrichment
Updated: 2026-08-05T12:30:12Z