CVE-2019-16201

HIGH
7.5
CVSS Score
Published: November 26, 2019 at 12:00 AM UTC
Updated: June 17, 2026 at 02:21 AM UTC
2 products affected across 2 vendorsDebian LinuxRuby

Using N/A by N/A?

Get instant alerts when new vulnerabilities affect N/A - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Severity
HIGH7.5
Exploit prediction
EPSS 5%

Description

WEBrick::HTTPAuth::DigestAuth in Ruby through 2.4.7, 2.5.x through 2.5.6, and 2.6.x through 2.6.4 has a regular expression Denial of Service cause by looping/backtracking. A victim must expose a WEBrick server that uses DigestAuth to the Internet or a untrusted network.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

95%
2.4.0 ≤ v ≤ 2.4.72.5.0 ≤ v ≤ 2.5.62.6.0 ≤ v ≤ 2.6.4

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-287

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Free plan, no card