CVE-2023-23621CWE-1333

Discourse vulnerable to ReDoS in user agent parsing

High · published January 27, 2023

CVSS v3.1
8.6
EPSS
1%
Percentile
58.3
In the wild
Unconfirmed
What it is

Discourse is an open-source discussion platform. Prior to version 3.0.1 on the `stable` branch and version 3.1.0.beta2 on the `beta` and `tests-passed` branches, a malicious user can cause a regular expression denial of service using a carefully crafted user agent. This issue is patched in version 3.0.1 on the `stable` branch and version 3.1.0.beta2 on the `beta` and `tests-passed` branches. There are no known workarounds.

The record
Technical detail
CVSS v3.1
8.6 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00868 · 58.3th percentile
Weakness
CWE-1333 · Inefficient Regular Expression Complexity
Published
2023-01-27T23:31Z
EPSS history
Timeline
  • 27 JAN 23:31Z
    Discourse vulnerable to ReDoS in user agent parsing
    cvelistv5