EUVD-2026-28849

Postiz is an AI social media scheduling tool. Prior to commit da44801, a "Pwn Request" vulnerability in the Build and Publish PR Docker Image workflow .github/workflows/pr-docker-build.yml allows any unauthenticated user to execute arbitrary code during the Docker build process and exfiltrate a...

CVE-2026-42298

CVE-2026-42298 affects Postiz (AI social media scheduling tool). The issue arises in the Build and Publish PR Docker Image workflow (.github/workflows/pr-docker-build.yml), where an unauthenticated user can cause arbitrary code execution during Docker image build by submitting a fork with a malic...

CVE-2026-42298 Postiz: Arbitrary Code Execution and Token Exfiltration in pr-docker-build.yml via untrusted Dockerfile.dev

Postiz is an AI social media scheduling tool. Prior to commit da44801, a "Pwn Request" vulnerability in the Build and Publish PR Docker Image workflow .github/workflows/pr-docker-build.yml allows any unauthenticated user to execute arbitrary code during the Docker build process and exfiltrate a...

CVE-2026-42298 Postiz: Arbitrary Code Execution and Token Exfiltration in pr-docker-build.yml via untrusted Dockerfile.dev

Postiz is an AI social media scheduling tool. Prior to commit da44801, a "Pwn Request" vulnerability in the Build and Publish PR Docker Image workflow .github/workflows/pr-docker-build.yml allows any unauthenticated user to execute arbitrary code during the Docker build process and exfiltrate a...

CVE-2026-42556: Improper Neutralization of Input During Web Page Generation

Postiz is an AI social media scheduling tool. From version 2.21.6 to before version 2.21.7, any authenticated user who can create a post can store arbitrary HTML in post content by tampering their own save request and send the public preview link /p/ ?share=true to another user. The preview page...

Gitroom Postiz 跨站脚本漏洞

Gitroom Postiz is an open-source social media scheduling tool developed by Gitroom. Versions of Gitroom Postiz from 2.21.6 to 2.21.7 contained a cross-site scripting vulnerability. This vulnerability allowed any authenticated user to store arbitrary HTML in post content by manipulating saved...

Gitroom Postiz 代码问题漏洞

Gitroom Postiz is an open-source social media scheduling tool developed by Gitroom. Versions of Gitroom Postiz from 2.16.6 to 2.21.7 contained code vulnerabilities. These vulnerabilities were caused by a TOCTOU vulnerability in the SSRF protection mechanism, which could allow attackers to redirec...

PT-2026-39214

Name of the Vulnerable Software and Affected Versions Postiz versions 2.16.6 through 2.21.6 Description Postiz is an AI social media scheduling tool. A Time-of-Check-Time-of-Use TOCTOU issue exists where the isSafePublicHttpsUrl function resolves DNS to validate the target IP, but subsequent fetc...

CVE-2026-42346: Server-Side Request Forgery (SSRF)

Postiz is an AI social media scheduling tool. From version 2.16.6 to before version 2.21.7, all SSRF protections added in v2.21.4–v2.21.6 share a fundamental TOCTOU Time-of-Check-Time-of-Use vulnerability: isSafePublicHttpsUrl resolves DNS to validate the target IP, but subsequent fetch calls...

CVE-2026-42298: Improper Control of Generation of Code

Postiz is an AI social media scheduling tool. Prior to commit da44801, a "Pwn Request" vulnerability in the Build and Publish PR Docker Image workflow .github/workflows/pr-docker-build.yml allows any unauthenticated user to execute arbitrary code during the Docker build process and exfiltrate a...

Gitroom Postiz 代码注入漏洞

Gitroom Postiz is an open-source social media scheduling tool developed by Gitroom. Previous versions of Gitroom Postiz had a code injection vulnerability. This vulnerability stemmed from a Pwn Request vulnerability present in the workflow for building and publishing PR Docker images, which could...

CVE-2026-40487 Postiz Has Unrestricted File Upload via MIME Type Spoofing that Leads to Stored XSS

Postiz is an AI social media scheduling tool. Prior to version 2.21.6, a file upload validation bypass allows any authenticated user to upload arbitrary HTML, SVG, or other executable file types to the server by spoofing the Content-Type header. The uploaded files are then served by nginx with a...

CVE-2026-40487 Postiz Has Unrestricted File Upload via MIME Type Spoofing that Leads to Stored XSS

Postiz is an AI social media scheduling tool. Prior to version 2.21.6, a file upload validation bypass allows any authenticated user to upload arbitrary HTML, SVG, or other executable file types to the server by spoofing the Content-Type header. The uploaded files are then served by nginx with a...

CVE-2026-40487 Postiz Has Unrestricted File Upload via MIME Type Spoofing that Leads to Stored XSS

Postiz is an AI social media scheduling tool. Prior to version 2.21.6, a file upload validation bypass allows any authenticated user to upload arbitrary HTML, SVG, or other executable file types to the server by spoofing the Content-Type header. The uploaded files are then served by nginx with a...

CVE-2026-40487

Postiz is an AI social media scheduling tool. Before version 2.21.6, a file upload validation bypass lets any authenticated user upload HTML/SVG or other executable types by spoofing Content-Type, after which nginx serves them with a Content-Type derived from the original extension (text/html, im...

CVE-2026-40487: Improper Neutralization of Input During Web Page Generation

Postiz is an AI social media scheduling tool. Prior to version 2.21.6, a file upload validation bypass allows any authenticated user to upload arbitrary HTML, SVG, or other executable file types to the server by spoofing the Content-Type header. The uploaded files are then served by nginx with a...

Gitroom Postiz 安全漏洞

Gitroom Postiz is an open-source social media scheduling tool developed by Gitroom. Versions of Gitroom Postiz prior to 2.21.6 contained security vulnerabilities. These vulnerabilities were caused by a bypass in file upload validation, which could lead to storage-side cross-site scripting attacks...

CVE-2026-40168

Postiz is an AI social media scheduling tool. Prior to 2.21.5, the /api/public/stream endpoint is vulnerable to SSRF. Although the application validates the initially supplied URL and blocks direct private/internal hosts, it does not re-validate the final destination after HTTP redirects. As a...

CVE-2026-40168

Postiz is an AI social media scheduling tool. Prior to 2.21.5, the /api/public/stream endpoint is vulnerable to SSRF. Although the application validates the initially supplied URL and blocks direct private/internal hosts, it does not re-validate the final destination after HTTP redirects. As a...

CVE-2026-40168

Postiz is affected by a Server-Side Request Forgery (SSRF) in the /api/public/stream endpoint prior to version 2.21.5. The vulnerability arises because the app validates the initially supplied URL and blocks direct private/internal hosts, but does not re-validate the final destination after HTTP ...