CVE-2022-28948 is a high-severity (CVSS 7.5) Deserialization of Untrusted Data vulnerability in gopkg.in/yaml.v3. 1 public exploit or proof-of-concept reference is indexed, so weaponization risk is real. A fix is available for gopkg.in/yaml.v3 — see the affected versions and patch details below.
gopkg.in/yaml.v3 Denial of Service
EPSS Exploitation Probability
Probability of exploitation in the next 30 days, from FIRST.org EPSS.
How urgent is this, really
Where this sits among everything scored
Real-World Exposure
gopkg.in/yaml.v3Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Go packages — download data is not available via public APIs for these ecosystems.
Description
An issue in the Unmarshal function in Go-Yaml v3 can cause a program to panic when attempting to deserialize invalid input.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐹Go | gopkg.in/yaml.v3 | all versions | 3.0.1go get gopkg.in/yaml.v3@v3.0.1 |
Affected Products
astra tridentnetappyamlyaml_projectResearch use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for gopkg.in/yaml.v3, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update gopkg.in/yaml.v3 to 3.0.1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2022-28948 is resolved across your whole dependency graph.
Workarounds
Do not deserialise data from untrusted sources: where the format allows it, restrict deserialisation to an explicit allowlist of expected types, and prefer a data-only format (JSON, Protobuf) over one that can reconstruct arbitrary objects until you can upgrade.
Fixing This On Your OS
If you run this on a Linux distribution, patch through your package manager against the distro's own security advisory below — it tracks the exact backported fix for your release, which can ship on a different timeline (and sometimes a different severity) than the upstream project.
Red Hat has designated the CVE rating as 'moderate' as exploitation of Red Hat products is contingent upon the attacker being authenticated when sending the malicious XML payload.
| Product | Fixed in | Advisory |
|---|---|---|
| Cryostat 2 on RHEL 8 | cryostat-tech-preview/cryostat-operator-bundle:2.1.1-2 | RHSA-2022:4985 |
| Red Hat OpenShift Dev Spaces 3 Containers | devspaces/devspaces-rhel8-operator:3.15-10 | RHSA-2024:4631 |
Frequently Asked Questions
Is CVE-2022-28948 in your dependencies?
Find it across Go, including transitive dependencies.