CVE-2025-61587 Weblate integration with Anubis can lead to Open Redirect via redir parameter

Low 2.1 Published Updated

Attackers can redirect users to malicious sites via the redir parameter when Weblate is configured with Anubis and REDIRECT_DOMAINS is unset.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
A user has to click or open something
Fix
Available

What is CVE-2025-61587?

CVE-2025-61587 is a low-severity vulnerability in WeblateOrg weblate, published on 1 Oct 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

Weblate is a web based localization tool. An open redirect exists in versions 5.13.2 and below via the redir parameter on .within.website when Weblate is configured with Anubis and REDIRECT_DOMAINS is not set. An attacker can craft a URL on the legitimate domain that redirects a victim to an attacker-controlled site. The redirect can also be used to initiate drive-by downloads (redirecting to a URL that serves a malicious file), increasing the risk to end users. This issue is fixed in version 5.13.3.

Weakness: CWE-601, CWE-1395

Which versions are affected by CVE-2025-61587?

1 open source package ship an affected version, including weblate. It affects 1 product.

PackageAffectedFixed in
weblate PyPIAll versions5.13.3
Linux distribution packages (1)
weblate openSUSE:TumbleweedAll versions5.13.3-1.1

Products include Weblate Weblate.

How do I fix CVE-2025-61587?

Upgrade weblate to 5.13.3 or later.

Is CVE-2025-61587 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-61587 exists.

Sources

Also known as GHSA-3xhv-r4gx-xw99, PYSEC-2025-269, openSUSE-SU-2025:15615-1.

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