CVE-2020-26161 json
In Octopus Deploy through 2020.4.2, an attacker could redirect users to an external site via a modified HTTP Host header.
published 2020-10-26 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-18786
- cvss
- 6.1
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.1%
- EPSS 1.1% chance of exploitation in 30 days, percentile 65%
- public exploits
- 0
- none known
Summary
In Octopus Deploy through 2020.4.2, an attacker could redirect users to an external site via a modified HTTP Host header.
Exploit prediction
1.07% chance of exploitation in the next 30 days, higher than 65% of all scored CVEs (FIRST EPSS, 2026-11-08).
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
/OctopusDeploy
third-party-advisory
-
github.com
/OctopusDeploy/Issues/issues/6622
issue-tracking, third-party-advisory
-
github.com
/OctopusDeploy/Issues/issues/6627
issue-tracking, third-party-advisory
Sources
- CVE List CVE-2020-26161
- NVD CVE-2020-26161
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.