Dashboard / CVE-2026-115574

CVE-2026-115574

MEDIUM
MEDIUM Priority: 0.04 BB Relevance: 71/100
Published: 2026-11-04 Modified: 2026-11-06 First seen: 2026-11-04 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: None
S: Unchanged
C: Low
I: None
A: None

Description

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.

Weakness Classification (1)

Affected Software (2)

VendorProductVersion
zulip zulip >= 11.0, < 12.2
zulip zulip >= 11.0, < 12.2

References & Advisories (6)

Bug Bounty Relevance

71 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

5.3 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

EPSS — Exploitation Probability

0.70%
Raw Score 0.007050
Percentile 53.9%
Date 2026-11-14

EPSS Trend

2026-11-14
0.00705
2026-11-13
0.00705
2026-11-12
0.00705
2026-11-10
0.00705
2026-11-09
0.00705
2026-11-08
0.00705
2026-11-07
0.00705
2026-11-06
0.00705
2026-11-05
0.00349

Intelligence Sources

mitre ref →
nvd ref →

External Links