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Fencer Vulns
medium 6.1

CVE-2020-29565 json

OpenStack Horizon Open redirect in workflow forms

published 2020-12-04 5 y ago modified 2026-06-17 4 mo ago also GHSA-f8fh-xp28-q59m , PYSEC-2020-45 , EUVD-2020-0084

cvss
6.1
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.4%
EPSS 1.4% chance of exploitation in 30 days, percentile 73%
public exploits
0
none known

Summary

An issue was discovered in OpenStack Horizon before 15.3.2, 16.x before 16.2.1, 17.x and 18.x before 18.3.3, 18.4.x, and 18.5.x. There is a lack of validation of the "next" parameter, which would allow someone to supply a malicious URL in Horizon that can cause an automatic redirect to the provided malicious URL.

Patch / fix

  • pypi horizon 15.3.2, 16.2.1, 18.3.3, 18.6.0
  • openstack horizon 15.3.2, 16.2.1, 18.3.3
  • horizon Debian 14, Debian 13, Debian 12 3:18.6.1-1

debian advisories DEBIAN-CVE-2020-29565

  • horizon Ubuntu 16.04 LTS 2:9.1.2-0ubuntu5.2
  • horizon Ubuntu 18.04 LTS 3:13.0.3-0ubuntu2
  • horizon Ubuntu 20.04 LTS 3:18.3.2-0ubuntu0.20.04.4

ubuntu advisories UBUNTU-CVE-2020-29565

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • python-django-horizon openstack 16.1 1:16.2.1-1.20201114033610.el8ost
  • openstack-dashboard openstack 16.1 1:16.2.1-1.20201114033610.el8ost
  • python3-django-horizon openstack 16.1 1:16.2.1-1.20201114033610.el8ost
  • python-django-horizon openstack 13 1:13.0.3-7.el7ost
  • openstack-dashboard openstack 13 1:13.0.3-7.el7ost

red hat advisories RHSA-2020:5411RHSA-2020:5572

  • release-notes-suse-openstack-cloud OpenStack Cloud Crowbar 8, OpenStack Cloud 8 8.20201214-3.26.1
  • openstack-dashboard OpenStack Cloud Crowbar 8, OpenStack Cloud 8, HPE Helion OpenStack 8 12.0.5~dev6-3.29.1
  • release-notes-hpe-helion-openstack HPE Helion OpenStack 8 8.20201214-3.26.1

suse advisories SUSE-SU-2021:0099-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2020-29565 updated cvss 6.1

python-django-horizon: dashboard allows open redirect

  • Red Hat OpenStack Platform 10 (Newton) openstack-dashboard, python-django-horizon, openstack-dashboard-theme Red Hat OpenStack Platform 15 (Stein) openstack-dashboard, python3-django-horizon, openstack-dashboard-theme
    affected: workaround, no fix planned “Out of support scope”
  • Red Hat OpenStack Platform 13.0 openstack-dashboard 13.0.3-7.el7ost, python-django-horizon 13.0.3-7.el7ost Red Hat OpenStack Platform 13.0 for RHEL 7.6 EUS Server openstack-dashboard 13.0.3-7.el7ost, python-django-horizon 13.0.3-7.el7ost
    fixed: vendor fix RHSA-2020:5572
  • Red Hat OpenStack Platform 16.1 openstack-dashboard 16.2.1-1.20201114033610.el8ost, python-django-horizon 16.2.1-1.20201114033610.el8ost, python3-django-horizon 16.2.1-1.20201114033610.el8ost
    fixed: vendor fix RHSA-2020:5411

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

1.42% chance of exploitation in the next 30 days, higher than 73% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • bugs.launchpad.net https://bugs.launchpad.net/horizon/+bug/1865026 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
NVD 2.0 5.8 AV:N/AC:M/Au:N/C:P/I:P/A:N
GitHub 3.1 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected packages

ecosystem package affected fixed in
pypi horizon
<15.3.2
>=16.0.0, <16.2.1
>=17.0.0, <18.3.3
>=18.4.0, <18.6.0
>=15.3.0, <15.3.2
15.3.2
16.2.1
18.3.3
18.6.0

Classification

Weakness
  • CWE-601 URL Redirection to Untrusted Site

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.