---
id: CVE-2026-121728
title: >-
  SourceHut meta.sr.ht 0.56.11 before 0.89.0 Registration Authorization Bypass
  via /register/step2
summary: >-
  SourceHut meta.sr.ht 0.56.11 before 0.89.0 contains an authorization bypass
  vulnerability that allows unauthenticated attackers to register accounts when
  public registration is disabled. Attackers can obtain a CSRF token from /login
  and …
severity: medium
cvss: 5.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N'
cvssSource: cna
cwe:
  - CWE-862
vendor: SourceHut
product: meta.sr.ht
affected:
  - meta.sr.ht >= 0.56.11 < 0.89.0
published: '2026-11-03'
updated: '2026-11-03'
sourceUpdated: '2026-11-03T22:55:34.601Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-121728'
references:
  - url: >-
      https://git.sr.ht/~sircmpwn/meta.sr.ht/commit/e471ffe75bb6ef11366e46c3b721dd0278f746b5
  - url: >-
      https://git.sr.ht/~sircmpwn/meta.sr.ht/commit/1ea24685a76f6456245d0bc7fe6accf6231c4044
  - url: >-
      https://git.sr.ht/~sircmpwn/meta.sr.ht/tree/0.88.9/item/metasrht/blueprints/auth.py#L121
  - url: 'https://git.sr.ht/~sircmpwn/meta.sr.ht/refs/0.89.0'
    label: meta.sr.ht 0.89.0 Release Notes
  - url: 'https://blog.arusekk.pl/posts/srht-disabled-registration-bypass/'
  - url: >-
      https://www.vulncheck.com/advisories/sourcehut-meta-sr-ht-0.56.11-before-0.89.0-registration-authorization-bypass-via-register-step2
    label: >-
      VulnCheck Advisory: SourceHut meta.sr.ht 0.56.11 before 0.89.0
      Registration Authorization Bypass via /register/step2
tags:
  - cve.org
epss: 0.0026
epssPercentile: 0.17867
ingestedAt: '2026-11-05T20:33:06.608Z'
---

## Overview

SourceHut meta.sr.ht 0.56.11 before 0.89.0 contains an authorization bypass vulnerability that allows unauthenticated attackers to register accounts when public registration is disabled. Attackers can obtain a CSRF token from /login and POST credentials to /register/step2, which invokes the unchecked GraphQL RegisterAccount mutation to create accounts.

## Affected

- `meta.sr.ht >= 0.56.11 < 0.89.0`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.