---
id: CVE-2026-115574
title: >-
  Zulip: Custom profile fields can be read by logged-out visitors in
  organization with web-public channels
summary: >-
  Zulip is an open-source team collaboration tool. From 11.0 until 12.2,
  organizations with web-public channels enabled exposed the GET /json/users
  endpoint to logged-out spectators, and a missing access-control check allowed
  include_custo…
severity: medium
cvss: 5.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N'
cvssSource: cna
cwe:
  - CWE-862
vendor: zulip
product: zulip
affected:
  - 'zulip >= 11.0, < 12.2'
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-11-05T19:19:18.762425Z'
exploitAvailable: true
published: '2026-11-04'
updated: '2026-11-05'
sourceUpdated: '2026-11-05T19:19:30.152Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-115574'
references:
  - url: 'https://github.com/zulip/zulip/security/advisories/GHSA-3m37-hwq6-jrj8'
    label: 'https://github.com/zulip/zulip/security/advisories/GHSA-3m37-hwq6-jrj8'
  - url: 'https://github.com/zulip/zulip/pull/39913'
    label: 'https://github.com/zulip/zulip/pull/39913'
  - url: >-
      https://github.com/zulip/zulip/commit/6f33a8fa345ba776039a3f46131c253599a3ba15
    label: >-
      https://github.com/zulip/zulip/commit/6f33a8fa345ba776039a3f46131c253599a3ba15
  - url: >-
      https://github.com/zulip/zulip/commit/774d4c7b12755178fa406f0c0f3b2cafdbbec32c
    label: >-
      https://github.com/zulip/zulip/commit/774d4c7b12755178fa406f0c0f3b2cafdbbec32c
  - url: 'https://github.com/zulip/zulip/releases/tag/12.2'
    label: 'https://github.com/zulip/zulip/releases/tag/12.2'
  - url: >-
      https://zulip.readthedocs.io/en/latest/overview/changelog.html#zulip-server-12-2
    label: >-
      https://zulip.readthedocs.io/en/latest/overview/changelog.html#zulip-server-12-2
tags:
  - cve.org
  - exploit-available
epss: 0.00705
epssPercentile: 0.53599
exploits:
  nuclei:
    - CVE-2026-115574
  checkedAt: '2026-11-07T18:05:45.928Z'
ingestedAt: '2026-11-05T22:38:31.521Z'
---

## Overview

Zulip is an open-source team collaboration tool. From 11.0 until 12.2, organizations with web-public channels enabled exposed the GET /json/users endpoint to logged-out spectators, and a missing access-control check allowed include_custom_profile_fields=true to return every user's custom profile field values in addition to the documented limited directory data. This exposed those custom profile field values to unauthenticated visitors. This issue is fixed in version 12.2.

## Affected

- `zulip >= 11.0, < 12.2`

## Remediation

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