CVEvulnerability

CVE-2019-16215

6.5 MEDIUM Published 2019-09-18 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2019-09-18
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
6.5 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0 ([email protected])
4.0 MEDIUM — AV:N/AC:L/Au:S/C:N/I:N/A:P
Weaknesses
CWE-1333

Description

The Markdown parser in Zulip server before 2.0.5 used a regular expression vulnerable to exponential backtracking. A user who is logged into the server could send a crafted message causing the server to spend an effectively arbitrary amount of CPU time and stall the processing of future messages.

Affected configurations

• zulip zulip server (< 2.0.5)

Related

Weakness · CWE (1)

  • CWE-1333 Inefficient Regular Expression Complexity weakness

Referenced by CWE · observed example (1)

  • CWE-1333 Inefficient Regular Expression Complexity weakness

References