CVE-2022-31017CWE-571CWE-670

Expression Always True vulnerability in Zulip Server

Low · published June 25, 2022

CVSS v3.1
2.0
EPSS
1%
Percentile
44.2
In the wild
Unconfirmed
What it is

Zulip is an open-source team collaboration tool. Versions 2.1.0 through and including 5.2 are vulnerable to a logic error. A stream configured as private with protected history, where new subscribers should not be allowed to see messages sent before they were subscribed, when edited causes the server to incorrectly send an API event that includes the edited message to all of the stream’s current subscribers. This API event is ignored by official clients, but can be observed by using a modified client or the browser’s developer tools. This bug will be fixed in Zulip Server 5.3. There are no known workarounds.

The record
Technical detail
CVSS v3.1
2.0 · LOW
Vector
CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:L/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00553 · 44.2th percentile
Weaknesses
CWE-571 · Expression is Always True; CWE-670 · Always-Incorrect Control Flow Implementation
Published
2022-06-25T08:15Z
EPSS history
Timeline
  • 25 JUN 08:15Z
    Expression Always True vulnerability in Zulip Server
    cvelistv5