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CVE-2026-123524— Vikunja 0.23.0 before 2.7.1 Information Disclosure via Webhook related_tasks Payload

Quick assessment

Affected

go-vikunja vikunja

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.

Vikunja 0.23.0 至 2.7.1（不含 2.7.1）版本存在信息泄露漏洞。拥有写入权限的项目协作者可通过注册 Webhook，读取无法访问的项目中的任务。由于 Webhook 载荷是根据触发用户的权限构建的，当其他用户修改关联任务时，攻击者将收到来自私有项目的关联任务标题、描述及元数据。

CVSS 5.7 · Medium Updated Nov 08, 2026

Possible ATT&CK Techniques 2 AI

T1070 · Indicator Removal T1190 · Exploit Public-Facing Application

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Vulnerability Information

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Vulnerability Title

Vikunja 0.23.0 before 2.7.1 Information Disclosure via Webhook related_tasks Payload

Source: CVE Program / CVE List V5

Vulnerability Description

Vikunja from 0.23.0 before 2.7.1 contains an information disclosure vulnerability that allows project collaborators with write access to read tasks from inaccessible projects by registering webhooks. Because webhook payloads are built with the triggering user's permissions, attackers receive related_tasks titles, descriptions and metadata from private projects whenever another user modifies a linked task.

Source: CVE Program / CVE List V5

CVSS Information

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N

Source: CVE Program / CVE List V5

Vulnerability Type

授权机制不正确

Source: CVE Program / CVE List V5

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
go-vikunja	vikunja	0.23.0 ~ 2.7.1	-

II. Public POCs for CVE-2026-123524

#	POC Description	Source Link	Shenlong Link

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III. Intelligence Information for CVE-2026-123524

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Other References for CVE-2026-123524 (2)

https://github.com/go-vikunja/vikunja/security/advisories/GHSA-66cq-j6rw-pjch vendor-advisory
https://www.vulncheck.com/advisories/vikunja-0.23.0-before-2.7.1-information-disclosure-via-webhook-related-tasks-payload third-party-advisory

https://www.cve.org/CVERecord?id=CVE-2026-123524

Same Patch Batch · go-vikunja · 2026-11-08 · 39 CVEs total

CVE-2026-123531	8.8 HIGH	Vikunja 1.0.0 before 2.7.1 Pagination Limit Bypass via page=0 Parameter
CVE-2026-123522	7.1 HIGH	Vikunja before 2.7.1 Task Information Disclosure via Kanban Bucket Move Webhook
CVE-2026-123520	7.1 HIGH	Vikunja 0.18.0 before 2.7.1 Privilege Escalation via Account Deletion
CVE-2026-123497	6.8 MEDIUM	Vikunja veans before 2.7.1 HTTPS to HTTP Downgrade in Server Discovery
CVE-2026-123528	6.8 MEDIUM	Vikunja before 2.7.1 Insufficient Session Expiration via HTTP Token Middleware
CVE-2026-123513	6.8 MEDIUM	Vikunja before 2.7.1 Auth Token Leak via API URL Change
CVE-2026-123523	6.5 MEDIUM	Vikunja before 2.7.1 Memory Exhaustion via Unbounded Avatar Size Cache
CVE-2026-123525	6.5 MEDIUM	Vikunja before 2.7.1 Memory Exhaustion DoS via Trello, Todoist and Microsoft To Do Migrati
CVE-2026-123519	6.5 MEDIUM	Vikunja before 2.7.1 Memory Exhaustion DoS via WeKan and Vikunja-File Imports
CVE-2026-123501	6.5 MEDIUM	Vikunja before 2.7.1 Memory Exhaustion DoS via Unbounded Image Decodes
CVE-2026-123500	6.2 MEDIUM	Vikunja before 2.7.1 Insecure Permissions on Dump Archive via vikunja dump
CVE-2026-123512	6.1 MEDIUM	Vikunja before 2.7.1 Sensitive Token Exposure via URL Query in Access Logs
CVE-2026-123499	5.9 MEDIUM	Vikunja veans before 2.7.1 Credential Leak via Repo-Controlled .veans.yml Server
CVE-2026-123530	5.9 MEDIUM	Vikunja before 2.7.1 Missing Step-Up Authentication via TOTP Enrollment Endpoints
CVE-2026-123521	5.9 MEDIUM	Vikunja before 2.7.1 Password Brute-Force via TOTP Disable Endpoint
CVE-2026-123505	5.5 MEDIUM	Vikunja before 2.7.1 World-Readable Local File Storage and SQLite Database
CVE-2026-123506	5.4 MEDIUM	Vikunja 2.2.0 before 2.7.1 Token Scope Bypass via Project Webhook Endpoints
CVE-2026-123493	5.4 MEDIUM	Vikunja from 2.4.0 before 2.7.1 Authentication Bypass via Bot API Tokens
CVE-2026-123526	5.4 MEDIUM	Vikunja before 2.7.1 Mass Assignment via Team external_id Field
CVE-2026-123503	5.4 MEDIUM	Vikunja before 2.7.1 Improper Authorization in Kanban Bucket Deletion

Showing top 20 of 39 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: vikunja

Same vendor: go-vikunja

Same weakness: CWE-863