# CVE-2026-33213: Redash open redirect in authentication module

Source: https://junglewise.ai/threats/cve-2026-33213-redash-open-redirect-in-authentication-module  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-07-15. Updated: 2026-07-15  
License: CC BY 4.0 with a link back

CVE-2026-33213 · Severity: medium · CVSS 6.1 · Published 2026-07-15

Redash, a data visualization and sharing platform, is vulnerable to a flaw where users can be redirected to malicious websites after logging in. By sending a specially crafted link to a user, an attacker can trick them into visiting a fake site that looks like a legitimate part of the company's infrastructure. This is typically used in phishing attacks to steal credentials or distribute malware by exploiting the user's trust in the initial login process.

Technologies: [Redash](https://junglewise.ai/threats/technologies/redash). Vendors: [Redash](https://junglewise.ai/threats/vendors/redash).

## Quick answers

**Is CVE-2026-33213 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-33213 being exploited in the wild.

**How severe is CVE-2026-33213?** Medium severity, with a CVSS score of 6.1, published 15 July 2026.

**Which products and versions are affected?** Redash >= 5.0.2, <= 26.3.0.

**Is there a fix for CVE-2026-33213?** A patch was published on 2026-07-15: Fix identified in version 26.3.1 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-33213 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-33213?** Check whether you run Redash 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.

## Technical details

An open redirect vulnerability (CWE-601) exists in Redash's authentication module within the get_next_path() function. While the function attempts to sanitize the 'next' parameter by stripping the scheme and netloc, it fails to normalize multiple leading slashes (e.g., '////evil.com'). When passed to Flask's redirect() function, browsers interpret these as protocol-relative URLs, leading to an external redirect. This affects all authentication methods including password login, Google OAuth, LDAP, and remote user authentication. The issue is resolved in version 26.3.1 by collapsing multiple leading slashes.

## Affected products

- getredash Redash >= 5.0.2, <= 26.3.0

## Timeline

- 2026-07-09: advisory: GitHub Security Advisory published by maintainers
- 2026-07-15: disclosed: CVE published to NVD
- 2026-07-15: patched: Fix identified in version 26.3.1

## References

- [https://github.com/getredash/redash/commit/9e66f81673c482d9ae6c425afe009644114605d0](https://github.com/getredash/redash/commit/9e66f81673c482d9ae6c425afe009644114605d0)
- [https://github.com/getredash/redash/security/advisories/GHSA-rfgc-hc86-pxrv](https://github.com/getredash/redash/security/advisories/GHSA-rfgc-hc86-pxrv)

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