What’s Vulnerable › Vulnerabilities

CVE-2026-35046: Tandoor has a Stored CSS Injection via <style> Tag in Recipe Instructions (API-Level)

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-04-06 · updated 2026-10-24
• Weakness: CWE-79

Description

Tandoor Recipes is an application for managing recipes, planning meals, and building shopping lists. Prior to 2.6.4, Tandoor Recipes allows authenticated users to inject arbitrary <style> tags into recipe step instructions. The bleach.clean() sanitizer explicitly whitelists the <style> tag, causing the backend to persist and serve unsanitized CSS payloads via the API. Any client consuming instructions_markdown from the API and rendering it as HTML without additional sanitization will execute attacker-controlled CSS — enabling UI redressing, phishing overlays, visual defacement, and CSS-based data exfiltration. This vulnerability is fixed in 2.6.4.

Affected products

• TandoorRecipes recipes: before 2.6.4 — fixed in 2.6.4

How to fix

Upgrade to a fixed version: TandoorRecipes recipes 2.6.4. Check the vendor advisory for mitigations.

References

• https://github.com/TandoorRecipes/recipes/releases/tag/2.6.4
• https://github.com/TandoorRecipes/recipes/security/advisories/GHSA-9hhh-g2fc-r8x2
• https://github.com/TandoorRecipes/recipes/security/advisories/GHSA-9hhh-g2fc-r8x2

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