CVE-2026-25198 web2py has an Open Redirect Vulnerability

Medium 5.1 Published Updated

Attackers can redirect users to malicious sites via crafted URLs, facilitating phishing attacks against web2py users.

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-2026-25198?

CVE-2026-25198 is a medium-severity vulnerability in web2py, published on 5 Feb 2026. 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

web2py versions 2.27.1-stable+timestamp.2023.11.16.08.03.57 and prior contain an open redirect vulnerability. If this vulnerability is exploited, the user may be redirected to an arbitrary website when accessing a specially crafted URL. As a result, the user may become a victim of a phishing attack.

Weakness: CWE-601

Which versions are affected by CVE-2026-25198?

3 open source packages ship an affected version, including web2py.

PackageAffectedFixed in
web2py PyPIAll versions3.1.1
web2py PyPIAll versions3.1.1
web2py PyPIAll versions3.1.1

How do I fix CVE-2026-25198?

Upgrade web2py to 3.1.1 or later.

Is CVE-2026-25198 being exploited?

There is no known exploitation of CVE-2026-25198 in the wild and no public exploit code.

Sources

Also known as GHSA-rf8c-3f5p-xv45, PYSEC-2026-3413, UBUNTU-CVE-2026-25198.

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