CVE-2020-26943An issue was discovered in OpenStack blazar-dashboard before 1.3.1, 2.0.0, and 3.0.0. A user allowed to access the Blazar dashboard in…
- 9.9CriticalCVSS base score
- 3.3%Exploitation in 30 daysEPSS · top 11% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
An issue was discovered in OpenStack blazar-dashboard before 1.3.1, 2.0.0, and 3.0.0. A user allowed to access the Blazar dashboard in Horizon may trigger code execution on the Horizon host as the user the Horizon service runs under (because the Python eval function is used). This may result in Horizon host unauthorized access and further compromise of the Horizon service. All setups using the Horizon dashboard with the blazar-dashboard plugin are affected.
Timeline
ID reserved
By mitre
- 6 days later
· 6 days later
Published
- 4 years later
· 4 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | Critical9.9 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 3.3% · top 11% of all CVEs (12 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.9.
Affected products
n/a
- affected n/a
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- PyPIblazar-dashboardGHSA-939m-4xpw-v34v (opens in a new tab)
References
References8
- https://launchpad.net/bugs/1895688 (opens in a new tab)x_refsource_MISCx_transferred
- https://review.opendev.org/755810 (opens in a new tab)x_refsource_MISCx_transferred
- https://review.opendev.org/756064 (opens in a new tab)x_refsource_MISCx_transferred
- https://review.opendev.org/755812 (opens in a new tab)x_refsource_MISCx_transferred
- https://review.opendev.org/755813 (opens in a new tab)x_refsource_MISCx_transferred
- https://review.opendev.org/755814 (opens in a new tab)x_refsource_MISCx_transferred
- https://security.openstack.org/ossa/OSSA-2020-007.html (opens in a new tab)x_refsource_CONFIRMx_transferred
- [oss-security] 20201016 [OSSA-2020-007] Blazar: Remote code execution in blazar-dashboard (CVE-2020-26943) (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2020-0053 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-939m-4xpw-v34v (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2020-26943)Record last updated .