---
id: "CVE-2026-125758"
page: "https://infrastack.ai/live/CVE-2026-125758"
kind: "vulnerability"
aliases: ["CVE-2026-125758"]
title: "Aptabase: forged sign-in links let attackers take over any account"
severity: "critical"
cvss: 9.1
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["analytics", "aptabase", "package", "self-hosted"]
not_affected_if: ["managed-hosting", "unique-auth-secret"]
published_at: "2026-11-10T16:17:23+00:00"
first_seen_at: "2026-11-10T16:22:35+00:00"
updated_at: "2026-11-10T16:23:20+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-125758", "first_seen_at": "2026-11-10T16:22:35+00:00"}]
exploit_sources: []
---

# Aptabase: forged sign-in links let attackers take over any account

Link for people: https://infrastack.ai/live/CVE-2026-125758 (this .md is for agents)

Aptabase before commit 61d4c01 accepts sign-in tokens signed with the publicly known example AUTH_SECRET, so anyone can forge login links. An attacker can impersonate users, export analytics data and transfer app ownership.

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

## How to check

- Check whether the deployed `AUTH_SECRET` is still the example value from the project's sample configuration.
- Check the deployed commit against `61d4c01`; anything older is listed as affected.

## Fix

- Move to a commit at or after `61d4c01` (the fixed commit named in the description).
- Replace the example `AUTH_SECRET` with a newly generated secret.

## Timeline

- 2026-11-10T16:22:35+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-125758

## Documents

- [advisory] Vendor advisory: github.com https://github.com/aptabase/aptabase/security/advisories/GHSA-gc76-cqm4-vqcf
- [advisory] Third-party advisory: www.vulncheck.com https://www.vulncheck.com/advisories/aptabase-before-commit-61d4c01-authentication-bypass-via-known-example-auth-secret
- [fix] Patch: github.com https://github.com/aptabase/aptabase/commit/61d4c01298a706d575265461ac07bb956ca7b8d2
- [fix] Patch: github.com https://github.com/aptabase/self-hosting/commit/b79a472419ff17e485d0bd5b4adf1b1ef2b9953c

## From the sources

Aptabase before commit 61d4c01 contains an authentication bypass vulnerability that allows unauthenticated attackers to forge sign-in links by using the publicly known example AUTH_SECRET. Attackers can enumerate registered e-mails via /api/_auth/signin, forge HS256 JWTs redeemed by /api/_auth/continue, impersonate users, export analytics data, and transfer app ownership.

---

_Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai_