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NVD / CVE Program· CNA mitre

CVE-2020-29565: 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.

Noroxi assessment

Priority: Monitor (action score 24/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 1.4% (FIRST EPSS); higher than 73.1% of all records.
  • Anyone who can reach it over the internet can trigger it. No account or password is required. A user must open a link or visit a page. No special conditions are required; it is repeatable.
  • Fixed version: horizon (Debian:10) 3:14.0.2-3+deb10u2; horizon (Debian:12) 3:18.6.1-1; horizon (PyPI) 15.3.2, 16.2.1, 18.3.3.

Low priority for now. Upgrade to horizon (Debian:10) 3:14.0.2-3+deb10u2; horizon (Debian:12) 3:18.6.1-1; horizon (PyPI) 15.3.2, 16.2.1, 18.3.3 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

MediumCVSS 6.1 · v3.1—No exploit Fix available
Published
Dec 4, 2020
Updated
Jun 16, 2026
EPSS
1.4% · 73th percentile

Report tools

JSON

Action score

24

Monitor

Low priority for now.

CVSS
24 / 40 · 6.1 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 1.4%

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  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

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When you'll hear from us

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  • when exploit code appears or is weaponized
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  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
openstackhorizon
debiandebian linux

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • debian debian linux10.0
  • openstack horizon15.3.0 and later · before 15.3.2
  • openstack horizon16.0.0 and later · before 16.2.1
  • openstack horizon17.0.0 and later · before 18.3.3
  • openstack horizon18.4.0 and later · up to 18.5.0 inclusive

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:10horizonbefore 3:14.0.2-3+deb10u23:14.0.2-3+deb10u2
Debian:12horizonbefore 3:18.6.1-13:18.6.1-1
PyPIhorizonfrom 15.3.0 · before 15.3.215.3.2
PyPIhorizonfrom 16.0.0 · before 16.2.116.2.1
PyPIhorizonfrom 17.0.0 · before 18.3.318.3.3
PyPIhorizonfrom 18.4.0 · before 18.6.018.6.0
PyPIhorizonbefore 15.3.215.3.2
Red Hat:openstack:13::el7openstack-dashboardbefore 1:13.0.3-7.el7ost1:13.0.3-7.el7ost
Red Hat:openstack:13::el7python-django-horizonbefore 1:13.0.3-7.el7ost1:13.0.3-7.el7ost
Red Hat:openstack:16.1::el8openstack-dashboardbefore 1:16.2.1-1.20201114033610.el8ost1:16.2.1-1.20201114033610.el8ost
Red Hat:openstack:16.1::el8python-django-horizonbefore 1:16.2.1-1.20201114033610.el8ost1:16.2.1-1.20201114033610.el8ost
Red Hat:openstack:16.1::el8python3-django-horizonbefore 1:16.2.1-1.20201114033610.el8ost1:16.2.1-1.20201114033610.el8ost
SUSE:HPE Helion OpenStack 8openstack-dashboardbefore 12.0.5~dev6-3.29.112.0.5~dev6-3.29.1
SUSE:HPE Helion OpenStack 8release-notes-hpe-helion-openstackbefore 8.20201214-3.26.18.20201214-3.26.1
SUSE:OpenStack Cloud 8release-notes-suse-openstack-cloudbefore 8.20201214-3.26.18.20201214-3.26.1

Same product

openstack: all records

Other highest-scoring records for the same primary product.

  • CVE-2012-2144Session fixation vulnerability in OpenStack Dashboard (Horizon) folsom-1 and 2012.1 allows remote attackers to hijack web sessions via the…
    28Monitor
  • CVE-2026-55748OpenStack Horizon before 25.7.4 produces scripts for OpenStack RC file downloading that may have a crafted project name with shell…
    27Monitor
  • CVE-2022-45582Open Redirect vulnerability in Horizon Web Dashboard 19.4.0 thru 20.1.4 via the success_url parameter.
    24Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2012-5474Dec 30, 2019 · The file /etc/openstack-dashboard/local_settings within Red Hat OpenStack Platform 2.0 and RHOS Essex Release (python-django-horizon…
    22Monitor
  • ← EarlierCVE-2012-5476Dec 30, 2019 · Within the RHOS Essex Preview (2012.2) of the OpenStack dashboard package, the file /etc/quantum/quantum.conf is world readable which…
    22Monitor
  • Later →CVE-2026-43002May 5, 2026 · An issue was discovered in OpenStack Horizon 25.6 and 25.7 before 25.7.3.
    21Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
debian:horizon3:18.6.1-1 · Debian:12Package registry (OSV)
PyPI:horizon15.3.2Package registry (OSV)
PyPI:horizon16.2.1Package registry (OSV)
PyPI:horizon18.3.3Package registry (OSV)
PyPI:horizon18.6.0Package registry (OSV)
red hat:openstack-dashboard1:16.2.1-1.20201114033610.el8ost · Red Hat:openstack:16.1::el8Package registry (OSV)
red hat:python-django-horizon1:16.2.1-1.20201114033610.el8ost · Red Hat:openstack:16.1::el8Package registry (OSV)
red hat:python3-django-horizon1:16.2.1-1.20201114033610.el8ost · Red Hat:openstack:16.1::el8Package registry (OSV)
suse:openstack-dashboard12.0.5~dev6-3.29.1 · SUSE:HPE Helion OpenStack 8Package registry (OSV)
suse:release-notes-hpe-helion-openstack8.20201214-3.26.1 · SUSE:HPE Helion OpenStack 8Package registry (OSV)
suse:release-notes-suse-openstack-cloud8.20201214-3.26.1 · SUSE:OpenStack Cloud 8Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • A user must open a link or visit a page.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
low · data can be read
Integrity
low · data or configuration can be modified
Availability
none

Impact can extend beyond the vulnerable component (scope changes).

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
Required
Scope
Changed
Confidentiality impact
Low
Integrity impact
Low
Availability impact
None

Weakness class (CWE)

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

CVSS vector

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

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (4 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records