PT-2026-39212 · Postiz · Postiz

Smiotani-Aeyesec · Published 2026-05-08 · Updated 2026-05-13 · CVE-2026-42298

Positive Technologies (AI Summary)

CVSS v3.1

10

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Postiz versions prior to commit da44801

Description A Pwn Request issue in the Build and Publish PR Docker Image workflow located in '.github/workflows/pr-docker-build.yml' allows unauthenticated users to execute arbitrary code during the Docker build process. This occurs when a Pull Request is opened from a fork containing a maliciously modified Dockerfile.dev, which can lead to the exfiltration of a highly privileged GITHUB TOKEN with write-all permissions.

Recommendations Update to the version containing commit da44801.

Fix

Code Injection

Weakness Enumeration

CWE-94

Related Identifiers

CVE-2026-42298

Affected Products

Postiz

References · 10

• https://github.com/gitroomhq/postiz-app/security/advisories/GHSA-v975-9h5p-xhm4 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-42298 · Security Note
• https://github.com/gitroomhq/postiz-app/commit/da448012dd87e94944cbe83a38e7fd023269ec46 · Note
• https://t.me/CVEtracker/53164 · Telegram Post
• https://twitter.com/lyrie_ai/status/2054416236407148870 · Twitter Post
• https://twitter.com/KaitanSecurity/status/2052893821185233276 · Twitter Post
• https://twitter.com/VulmonFeeds/status/2052955236218658845 · Twitter Post
• https://twitter.com/NewsNerdie/status/2053113408409481563 · Twitter Post
• https://twitter.com/CVEnew/status/2053131418121933116 · Twitter Post
• https://t.me/cveNotify/163336 · Telegram Post