CVE-2020-23015 json
An open redirect issue was discovered in OPNsense through 20.1.5.
published 2021-05-03 5 y ago modified 2026-06-17 4 mo ago also EUVD-2020-15771
- cvss
- 6.1
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.7%
- EPSS 2.7% chance of exploitation in 30 days, percentile 85%
- public exploits
- 0
- none known, plus a Nuclei check
Summary
An open redirect issue was discovered in OPNsense through 20.1.5. The redirect parameter "url" in login page was not filtered and can redirect user to any website.
Exploit prediction
2.68% chance of exploitation in the next 30 days, higher than 85% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- Nuclei template OPNsense <=20.1.5 - Open Redirect nuclei detection template
- github.com https://github.com/opnsense/core/issues/4061 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 |
Classification
- Weakness
-
- CWE-601 URL Redirection to Untrusted Site
References
-
github.com
/opnsense/core/issues/4061
exploit, issue-tracking, third-party-advisory
Sources
- CVE List CVE-2020-23015
- NVD CVE-2020-23015
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.