Vulnerability · Published Sep 22, 2021 · Assigned by Octopus
CVE-2021-31819
Critical 9.8
In plain English
A critical-severity security flaw in Halibut from Octopus Deploy. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 2.4% (higher than 84% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)9.8Critical
Exploit odds (30 days)2.4%top 16.2% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
In Halibut versions prior to 4.4.7 there is a deserialisation vulnerability that could allow remote code execution on systems that already trust each other based on certificate verification.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| NuGet | halibut | 4.4.7 | GHSA-hpf7-4c2g-9chf |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Octopus Deploy | Halibut | unspecified – before 4.4.7 |