Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-115931— Arbitrary file read and backend crash through unrestricted provider method calls

Quick assessment

Affected
GitroomHQ postiz-app
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.

Postiz 允许已登录用户请求后端在其已连接的频道上运行某个函数。由于后端未对可请求的函数进行限制，用户可以调用本不应通过 Web 界面访问的内部辅助函数。 其中一个辅助函数会从服务器磁盘读取文件。若用户连接了一个其存储的令牌为文件路径的频道，则后端将返回该用户可读取的任何文件内容，包括环境变量文件。该文件中包含用于签署登录会话的密钥、数据库地址以及已连接服务的凭据。另一个辅助函数则允许通过单次请求使后端进程退出。此外，系统默认开启自助注册功能，因此无需现有账户，也无需其他用户参与即可触发此漏洞。

CVSS 9.9 · Critical EPSS 0.65% · P51
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-115931

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Arbitrary file read and backend crash through unrestricted provider method calls
Source: CVE Program / CVE List V5
Vulnerability Description
Postiz lets a signed-in user ask the backend to run a function on one of their connected channels. The backend did not restrict which functions can be requested, so a user could call internal helper functions that were never meant to be reachable from the web interface. One of those helpers reads a file from the server's disk. A user who connects a channel whose stored token is a file path can have the backend return the contents of any file it can read, including its environment, which holds the secret used to sign login sessions, the database address and the credentials of connected services. Another helper makes the backend process exit with a single request. Self-registration is open by default, so no existing account and no action by another user is needed.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
使用外部可控制的输入来选择类或代码(不安全的反射)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
GitroomHQ postiz-app 2.23.0 ~ 2.25.2 -

II. Public POCs for CVE-2026-115931

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-115931

请登录查看更多情报信息。

Patches & Fixes for CVE-2026-115931 (1)

Vendor Advisories for CVE-2026-115931 (1)

Other References for CVE-2026-115931 (1)

Other References for CVE-2026-115931 (1)

IV. Related Vulnerabilities

Same product: postiz-app
Same vendor: GitroomHQ
Same weakness: CWE-470

V. Comments for CVE-2026-115931

No comments yet

Leave a comment