CVE-2020-29565
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.
Does this matter?
Lower severity and a low EPSS score (1.43%). Track it; it rarely justifies an emergency change on its own.
Description
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.
- CVSS 3.1
- 6.1 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- EPSS
- 1.43% probability · 73th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-601
- Affected
- openstack/horizon · debian/debian linux
- Source
- cve@mitre.org
EPSS 1.4% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://www.openwall.com/lists/oss-security/2020/12/08/2Mailing List, Patch, Third Party Advisory
- https://bugs.launchpad.net/horizon/+bug/1865026Exploit, Issue Tracking, Third Party Advisory
- https://review.opendev.org/c/openstack/horizon/+/758841/Patch, Third Party Advisory
- https://review.opendev.org/c/openstack/horizon/+/758843/Patch, Third Party Advisory
- https://security.openstack.org/ossa/OSSA-2020-008.htmlPatch, Vendor Advisory
- https://www.debian.org/security/2020/dsa-4820Third Party Advisory
- http://www.openwall.com/lists/oss-security/2020/12/08/2Mailing List, Patch, Third Party Advisory
- https://bugs.launchpad.net/horizon/+bug/1865026Exploit, Issue Tracking, Third Party Advisory
- https://review.opendev.org/c/openstack/horizon/+/758841/Patch, Third Party Advisory
- https://review.opendev.org/c/openstack/horizon/+/758843/Patch, Third Party Advisory
- https://security.openstack.org/ossa/OSSA-2020-008.htmlPatch, Vendor Advisory
- https://www.debian.org/security/2020/dsa-4820Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.