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Medium

OpenStack Horizon has Incorrect Behavior Order

  • Disclosed: 05.05.2026
  • Updated: 11.10.2026 14:18

An issue was discovered in OpenStack Horizon 25.6 and 25.7 before 25.7.3. There is a write operation to the session storage backend before authentication and thus storage can be exhausted by unauthenticated requests. This is a regression of the CVE-2014-8124 fix.

Affected software

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PlatformPackageVulnerable versionsFixed in
Python (PyPI) horizon >= 25.6, < 25.7.3 25.7.3

References

CVSS score 5.3/10
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Weakness (CWE)
CWE-696
Platform
Python (PyPI)
Package
horizon
Disclosed
05.05.2026
Updated
11.10.2026 14:18

Sources and licenses

OSV / GitHub Advisory Database - PYSEC-2026-2520 - PyPA Advisory Database; CC BY 4.0

OSV / GitHub Advisory Database - GHSA-vxvf-xvm3-p8j5 - CC BY 4.0

Vulnerability history: horizon

All published vulnerabilities of this package (Python (PyPI)), newest first. Shows whether this is a one-off slip or a package that needs watching.

All (12) in the archive
Total entries
12
First → latest
09.2012 06.2026
Without a fix
2
Exploited in attacks
0

Severity breakdown

  • Medium 9
  • Low 2
  • Unrated 1

Disclosures per year

earlier: 2

Severity:
  1. OpenStack Horizon RC file generation does not escape special characters in project names
    Medium · 6.0 CVE-2026-55748 <= 25.7.3 no fix
  2. OpenStack Horizon has Incorrect Behavior Order this entry
    Medium · 5.3 CVE-2026-43002 >= 25.6, < 25.7.3 25.7.3
  3. Open Redirect vulnerability in Horizon Web Dashboard 19.4.0 thru 20.1.4 via the success_url parameter.
    Medium · 6.1 CVE-2022-45582 >= 19.4.0, < 20.2.0 20.2.0
  4. OpenStack Horizon Cross-site Scripting (XSS)
    Medium · 4.8 CVE-2017-7400 >= 9.0, < 9.1.2, >= 10.0, < 10.0.3, >= 11.0.0, < 11.0.1 9.1.2, 10.0.3, 11.0.1
  5. OpenStack Dashboard (aka Horizon) vulnerable to Cross-site Scripting
    Medium CVE-2014-0157 >= 2013.2, < 2013.2.4 2013.2.4
  6. Horizon-Orchestration Cross-site scripting (XSS) vulnerability through resource name
    Medium CVE-2014-3473 < 8.0.0a0 8.0.0a0
  7. OpenStack Horizon Cross-site scripting (XSS) vulnerability
    Low CVE-2014-3474 < 8.0.0a0 8.0.0a0
  8. OpenStack Dashboard (Horizon) Cross-site scripting (XSS) vulnerability in the Host Aggregates interface
    Low CVE-2014-3594 < 8.0.0a0 8.0.0a0
  9. OpenStack Dashboard (Horizon) Cross-site scripting (XSS) vulnerability
    Medium · 5.4 CVE-2016-4428 < 8.0.2, >= 9.0.0, < 9.1.0 8.0.2, 9.1.0
  10. 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 allo
    Medium · 6.1 CVE-2020-29565 >= 15.3.0, < 15.3.2, >= 16.0.0, < 16.2.1, >= 17.0.0, < 18.3.3, >= 18.4.0, < 18.6.0 15.3.2, 16.2.1, 18.3.3, 18.6.0
  11. OpenStack Dashboard (Horizon) Cross-site scripting (XSS) vulnerability
    Medium · 6.1 CVE-2015-3219 < 8.0.0a0 8.0.0a0
  12. Open redirect vulnerability in views/auth_forms.py in OpenStack Dashboard (Horizon) Essex (2012.1) allows remote attackers to redirect users to arbitrary web sites and conduct phishing attacks via a U
    Unrated CVE-2012-3540 all versions no fix

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