Open Redirect Vulnerability in Taguette

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS

5.4 · CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

EPSS

• CVE-2025-67502: 0.26% estimated exploitation activity in the next 30 days; percentile 18.11 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

Summary An Open Redirect vulnerability exists in Taguette that allows attackers to craft malicious URLs that redirect users to arbitrary external websites after authentication. This can be exploited for phishing attacks where victims believe they are interacting with a trusted Taguette instance but are redirected to a malicious site designed to steal credentials or deliver malware. Severity: Medium to High --- Details The application accepts a user-controlled next parameter and uses it directly in HTTP redirects without any validation. The vulnerable code is located in two places: Location 1: Login Handler (taguette/web/views.py, lines 140-144) This method is called after successful login (line 132) and when an already-logged-in user visits the login page (line 109). Location 2: Cookies Prompt Handler (taguette/web/views.py, lines 79-85) In both cases, if next is provided by the user, it is passed directly to self.redirect() without checking whether it points to the same host or is a…

Published by the source

9 Dec 2025, 14:26 UTC

Last modified by the source

7 Jul 2026, 17:56 UTC

Source last checked

26 Oct 2026, 13:36 UTC

1. Revision 2 · amended · 26 Oct 2026

   Amended from ghsa record GHSA-5923-r76v-mprm

2. Revision 1 · created · 24 Oct 2026

   Published from osv record GHSA-5923-r76v-mprm

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# Patch Next advisory brief: CVE-2025-67502

Advisory: Open Redirect Vulnerability in Taguette
IDs: CVE-2025-67502, GHSA-5923-r76v-mprm
Record: https://patchnext.com/advisories/cve-2025-67502 (revision 2, source checked 26 Oct 2026, 13:36 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Medium (CVSS 5.4)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: taguette 1.5.2. A vendor fix does not mean a deployment is fixed.

## Affected components
- PyPI taguette: affected <= 1.5.1; fixed in 1.5.2

## Suggested inspection (read-only)
- `python -m pip show taguette`: prints the installed version. Run with the environment that serves production active.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on taguette.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://osv.dev/vulnerability/GHSA-5923-r76v-mprm (OSV record GHSA-5923-r76v-mprm lists affected ranges: PyPI taguette >=0 <1.5.2 (fixed))
- Verified: https://github.com/advisories/GHSA-5923-r76v-mprm (GitHub-reviewed advisory GHSA-5923-r76v-mprm lists affected ranges: PyPI taguette >=0 <=1.5.1)

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