gitroom postiz
Published Atomicorp research notes for CVEs affecting gitroom postiz where WAF protections were observed during testing or engineering review.
These notes are not intended to represent the full set of vulnerabilities mitigated by Atomicorp products and should not be interpreted as a coverage matrix, certification list, or census of protected CVEs.
Atomicorp WAF protections are primarily designed around attack techniques and exploit behaviors rather than individual vulnerability identifiers. A published research note documents a positive research finding related to that CVE. If a CVE is absent from these notes, no conclusion should be drawn about protection status.
| CVE | Vulnerability | CVSS | Severity | Rules Observed |
|---|---|---|---|---|
| CVE-2026-42556 | Postiz stored XSS in public preview page | 9.0 (v3.1) | Critical | 333140 , 333141 , 340087 , 340095 , 340099 , 340147 , 340148 , 341099 , 341256 , 341266 , 342259 , 346755 , 350147 , 350148 |
| CVE-2026-34577 | Postiz: Unauthenticated Full-Read SSRF via /public/stream Endpoint with Trivially Bypassable Extension Check | 8.6 (v3.1) | High | 337109 , 337110 , 340165 , 344360 , 347009 , 390722 , 398021 , 398022 |
| CVE-2026-34576 | Postiz: SSRF in upload-from-url endpoint allows fetching internal resources and cloud metadata | 8.3 (v4.0) | High | 337109 , 337110 , 344360 , 398021 , 398022 |
| CVE-2026-34590 | Postiz: SSRF via Webhook Creation Endpoint Missing URL Safety Validation | 5.4 (v3.1) | Medium | 337109 , 337110 , 344360 , 398021 , 398022 |