---
id: "CVE-2026-102603"
kind: "vulnerability"
aliases: ["CVE-2026-102603", "GHSA-3hcj-9m7p-wwm9", "GO-2026-6772"]
title: "Gotify: Insufficiently Protected Password Change endpoint in github.com/gotify/server"
severity: "medium"
cvss: 5.3
epss: 0.00335
exploited: false
status: "open"
category: "package"
products: [{"name": "github.com/gotify/server", "fixed": [], "affected": "all versions", "ecosystem": "go"}, {"name": "github.com/gotify/server/v2", "fixed": [], "affected": "all versions", "ecosystem": "go"}, {"name": "github.com/gotify/server/v3", "fixed": ["3.0.0"], "affected": "< 3.0.0", "ecosystem": "go"}]
ecosystems: ["go"]
tags: ["go", "gotify", "package", "self-hosted"]
not_affected_if: ["gotify-below-not-used", "managed-hosting"]
published_at: "2026-10-13T15:17:30+00:00"
first_seen_at: "2026-10-23T19:13:08+00:00"
updated_at: "2026-10-23T20:03:10+00:00"
sources: [{"source": "govuln", "url": "https://pkg.go.dev/vuln/GO-2026-6772", "first_seen_at": "2026-10-23T19:13:08+00:00"}, {"source": "epss", "url": "https://api.first.org/data/v1/epss?cve=CVE-2026-102603", "first_seen_at": "2026-10-23T19:13:43+00:00"}, {"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-102603", "first_seen_at": "2026-10-23T19:35:23+00:00"}]
---

# Gotify: Insufficiently Protected Password Change endpoint in github.com/gotify/server

Gotify server, a self-hosted push-message server, lets anyone holding a client token change the account password without knowing the current password. An attacker with a stolen client token can take over the user's password login.

_Summary, check and fix written by a model from the sources; labelled as such._

## Affected

- go:github.com/gotify/server affected all versions fixed ?
- go:github.com/gotify/server/v2 affected all versions fixed ?
- go:github.com/gotify/server/v3 affected < 3.0.0 fixed 3.0.0

## How to check

Check the Gotify server version (the module github.com/gotify/server/v3 below 3.0.0 is affected); the sources do not give a command for the running binary.

## Fix

Upgrade github.com/gotify/server/v3 to 3.0.0 or later.
Rotate client tokens and reset user passwords if a token may have leaked before the upgrade.

## Timeline

- 2026-10-23T19:13:08+00:00 govuln https://pkg.go.dev/vuln/GO-2026-6772
- 2026-10-23T19:13:43+00:00 epss https://api.first.org/data/v1/epss?cve=CVE-2026-102603
- 2026-10-23T19:35:23+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-102603

## From the sources

Gotify server is a simple server for sending and receiving messages in real-time per WebSocket. Prior to 3.0.0, the password change endpoint (POST /current/user/password) accepts a valid client token without requiring the account's current password or another elevated authentication step. An attacker who obtains a client token can set a new password for the associated user, taking control of password authentication and forcing account recovery through an administrator or direct database access. This issue is fixed in version 3.0.0.

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_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_