CVE-2021-29456: Authelia allows open redirects on the logout endpoint

CVE-2021-29456 · Severity: low · CVSS 3.1 · Published 2023-03-16

Authelia allows open redirects on the logout endpoint

Technologies: github.com/authelia/authelia/v4 (Go). Vendors: Go.

Quick answers

Is CVE-2021-29456 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2021-29456 being exploited in the wild.
How severe is CVE-2021-29456?
Low severity, with a CVSS score of 3.1, published 16 March 2023.
Which products and versions are affected?
github.com/authelia/authelia/v4 (Go) SEMVER:introduced=0,fixed=4.28.0.
Is there a fix for CVE-2021-29456?
Yes. github.com/authelia/authelia/v4 (Go): upgrade to 4.28.0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2021-29456?
Check whether you run github.com/authelia/authelia/v4 (Go) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • github.com/authelia/authelia/v4 (Go): upgrade to 4.28.0 or later
    go get github.com/authelia/authelia/v4@v4.28.0

Affected products

  • github.com/authelia/authelia/v4 (Go) SEMVER:introduced=0,fixed=4.28.0

Identifiers

  • CVE-2021-29456
  • GHSA-36f2-fcrx-fp4j

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