# CVE-2026-115933 — GitroomHQ postiz-app

> As of 2026-10-24, CVE-2026-115933 is a CRITICAL-severity vulnerability in GitroomHQ postiz-app, CVSS v3.1 9.9, EPSS 0.2% (16.1th percentile). No Threadlinqs-tracked threat campaign has been attributed to CVE-2026-115933 as of 2026-10-24; the identifier is re-checked against the Threadlinqs threat corpus on every daily ingest.

**Last updated:** 2026-10-24

## What is CVE-2026-115933?

Postiz signs its session, invitation and password reset tokens with one shared secret and without any marker of what a token is for. A route that refreshes the credentials of a browser-extension channel signed data taken from the request itself and stored the result where the requesting user can read it back. A user could therefore obtain a validly signed token containing any claims they choose, which the application accepts as a session, as an organization invitation with a chosen role, as a password reset or as an enterprise provisioning token. A second, narrower route that creates team invitations signs extra fields from the request body in the same way.

The record classifies CVE-2026-115933 under weakness classes [CWE-290](https://intel.threadlinqs.com/cwe/CWE-290), [CWE-345](https://intel.threadlinqs.com/cwe/CWE-345), [CWE-915](https://intel.threadlinqs.com/cwe/CWE-915). Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs low-privilege credentials, needs no user interaction, and has high impact on confidentiality, integrity, availability. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 4 days ago.

## Severity and exploitation probability

- **CVSS v3.1 base score:** 9.9 — CRITICAL (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H`)
- **EPSS (FIRST):** 0.2% probability of exploitation in the next 30 days, higher than 16.1% of all scored CVEs
- **CISA KEV:** Not listed in the CISA Known Exploited Vulnerabilities catalog
- **Threadlinqs priority:** 5.6/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- **Published:** 2026-10-24

## Is CVE-2026-115933 being exploited?

It currently carries a trending score of 34 in the Threadlinqs vulnerability feed.

## Affected products and versions

- **GitroomHQ**: postiz-app

## How to fix CVE-2026-115933

No vendor patch reference has been recorded for CVE-2026-115933 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.

## Threat activity tracking CVE-2026-115933

No threat campaign in the Threadlinqs corpus currently references CVE-2026-115933, in its CVE list or as an indicator. The linkage is recomputed from the live corpus on every daily ingest, so this section fills in as soon as a tracked campaign cites the identifier.

## Sources

Enriched from CVE.org, NVD, FIRST EPSS, GitHub Security Advisories. Last verified by Threadlinqs on 2026-10-25. This product uses the NVD API but is not endorsed or certified by the NVD.

**Vendor advisory and patch**

- [github.com — release notes](https://github.com/gitroomhq/postiz-app/releases/tag/v2.25.3)
- [github.com — patch](https://github.com/gitroomhq/postiz-app/commit/a5affe62c74e39c1e7ac960d50d8418b807d532c)
- [gadvisory.org — vendor advisory](https://gadvisory.org/advisories/PSA-2026-YT2HMH)

**Issue tracking and product pages**

- [github.com — product](https://github.com/gitroomhq/postiz-app)

Canonical: https://intel.threadlinqs.com/cve/CVE-2026-115933
Full detection coverage and IOCs for threats exploiting CVE-2026-115933 via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp