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CVE-2025-53641— Postiz allows header mutation in middleware facilitates resulting in SSRF

Quick assessment

Affected
gitroomhq postiz-app
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Gitroom Postiz是Gitroom开源的一个社交媒体日程安排工具。 Gitroom Postiz 1.45.1至1.62.3版本存在代码问题漏洞，该漏洞源于HTTP头注入，可能导致服务端请求伪造。

CVSS 8.2 · High EPSS 0.25% · P16

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2025-53641

Vulnerability Information
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Vulnerability Title
Postiz allows header mutation in middleware facilitates resulting in SSRF
Source: CVE Program / CVE List V5
Vulnerability Description
Postiz is an AI social media scheduling tool. From 1.45.1 to 1.62.3, the Postiz frontend application allows an attacker to inject arbitrary HTTP headers into the middleware pipeline. This flaw enables a server-side request forgery (SSRF) condition, which can be exploited to initiate unauthorized outbound requests from the server hosting the Postiz application. This vulnerability is fixed in 1.62.3.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
服务端请求伪造(SSRF)
Source: CVE Program / CVE List V5
Vulnerability Title
Gitroom Postiz 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Gitroom Postiz是Gitroom开源的一个社交媒体日程安排工具。 Gitroom Postiz 1.45.1至1.62.3版本存在代码问题漏洞，该漏洞源于HTTP头注入，可能导致服务端请求伪造。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
gitroomhq postiz-app >= 1.45.1, < 1.62.3 -

II. Public POCs for CVE-2025-53641

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 7359 chars
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III. Intelligence Information for CVE-2025-53641

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IV. Related Vulnerabilities

Same product: postiz-app
Same vendor: gitroomhq
Same weakness: CWE-918

V. Comments for CVE-2025-53641

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