What is CVE-2015-6961?

CVE-2015-6961 is a medium-severity vulnerability in Web2py, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 6.1/10. Published 2017-10-18.

How severe is CVE-2015-6961?

Medium severity. CVSS v3 base score is 6.1 out of 10.

Is CVE-2015-6961 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Open Redirect in Web2py

CVE-2015-6961

Open redirect vulnerability in gluon/tools.py in Web2py 2.9.11 allows remote attackers to redirect users to arbitrary web sites and conduct phishing attacks via a URL in the _next parameter to user/logout.

Vulnerability class: Open Redirect

Published 2017-10-18 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.010 (61.7th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 62nd percentile — 61.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000

Affected products

Web2py — versions 2.9.11

Weakness classification (CWE)

CWE-601 — URL Redirection to Untrusted Site (Open Redirect)

Public proof-of-concept exploits

ARPSyndicate/cvemon

References

github.com/web2py/web2py/commit/e31a099cb3456fef471886339653430ae59056b0 (Patch, Third Party Advisory)
github.com/web2py/web2py/issues/731 (Third Party Advisory)

Frequently asked questions

What is CVE-2015-6961?: CVE-2015-6961 is a medium-severity vulnerability in Web2py, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 6.1/10. Published 2017-10-18.
How severe is CVE-2015-6961?: Medium severity. CVSS v3 base score is 6.1 out of 10.
Is CVE-2015-6961 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.