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CVE-2026-59966— Tandoor Recipes: ReDoS (Regular Expression Denial of Service) via User-Controlled Automation Regex Patterns

Quick assessment

Affected
TandoorRecipes recipes
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Tandoor Recipes 是一款用于管理食谱、规划膳食以及生成购物清单的应用程序。在 2.6.10 版本之前，当已认证用户在某个“空间（Space）”中存储了一个会导致灾难性回溯的正则表达式（regex），且同一空间内的任意用户导入匹配该模式的食谱时，系统会使用 Python 的 函数执行由用户控制的自动化正则表达式模式，且未进行复杂度验证或设置执行超时。请求处理涉及 、 、 以及 接口。该攻击之所以可行，是因为共享空间的自动化引擎在导入食谱时会评估恶意模式，从而可能长期占用 Gunicorn 工作进程，直至

CVSS 5.7 · Medium

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
TandoorRecipes recipes < 2.6.10 affected
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I. Basic Information for CVE-2026-59966

Vulnerability Information
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Vulnerability Title
Tandoor Recipes: ReDoS (Regular Expression Denial of Service) via User-Controlled Automation Regex Patterns
Source: CVE Program / CVE List V5
Vulnerability Description
Tandoor Recipes is an application for managing recipes, planning meals, and building shopping lists. Prior to 2.6.10, executes user-controlled Automation regular-expression patterns with Python re.sub() without complexity validation or an execution timeout when an authenticated user stores a catastrophic-backtracking regex and any user in the same Space imports a matching recipe. Request processing uses Automation.param_2, apply_regex_replace_automation, sub, api/recipe-from-source/. The attack works because the shared-Space automation engine evaluates the malicious pattern during recipe import and can occupy a Gunicorn worker until its request timeout. This can exhaust application worker slots and make the service unavailable to users. This issue is fixed in version 2.6.10.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
CWE-1333
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
TandoorRecipes recipes < 2.6.10 -

II. Public POCs for CVE-2026-59966

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III. Intelligence Information for CVE-2026-59966

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Vendor Advisories for CVE-2026-59966 (1)

Vendor Pages for CVE-2026-59966 (1)

Same Patch Batch · TandoorRecipes · 2026-10-16 · 6 CVEs total

CVE-2026-61726 8.1 HIGH Tandoor Recipes: Private recipe authorization bypass via /api/step/ - read and modify anot
CVE-2026-59970 7.7 HIGH Tandoor Recipes: Blind SSRF via AI provider URL (api_base)
CVE-2026-59963 7.1 HIGH Tandoor Recipes: Private recipe file and share-link authorization bypass in recipe utility
CVE-2026-59962 6.5 MEDIUM Tandoor Recipes: ORM ORDER BY Injection via FK Traversal in Tandoor Recipes
CVE-2026-59967 5.4 MEDIUM Tandoor Recipes: Cross-user IDOR in /api/recipe-from-source/ bookmarklet import — read and

IV. Related Vulnerabilities

Same product: recipes
Same vendor: TandoorRecipes
Same weakness: CWE-1333

V. Comments for CVE-2026-59966

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