CVE-2022-3064: Parsing malicious or large YAML documents can consume excessive amounts of CPU or memory.

Q: How do I fix CVE-2022-3064?

yaml: upgrade to 2.2.4. Exact commands for each OS are on this page.

Q: Is CVE-2022-3064 being exploited?

CVE-2022-3064 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2022-3064 affect?

CVE-2022-3064 affects yaml. Severity is high (CVSS 7.5). Parsing malicious or large YAML documents can consume excessive amounts of CPU or memory.

Q: How urgent is CVE-2022-3064?

Priority 51/100. High severity; Remotely exploitable, no login, no user action

This month

HIGH 7.5REMOTEUPGRADE

CVE-2022-3064 is a high-severity flaw (CVSS 7.5) affecting yaml. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Parsing malicious or large YAML documents can consume excessive amounts of CPU or memory.

Why this priority

High severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.9% (top 21%)
CISA exploited list	No
Weakness	CWE-400
Published	2022-12-27
Last modified	2026-06-17

Publisher (CNA): Go Project · Vendor: yaml project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2022-12-27 22:15 UTCPublished CVE record published
2026-06-17 04:58 UTCUpdated Record last modified

yaml project yaml UPGRADE

Affected: < 2.2.4

Fixed in: 2.2.4

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy yaml || rpm -q yaml || yaml --version

2. UPGRADE to 2.2.4 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade yaml

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade yaml

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2022-3064?

yaml: upgrade to 2.2.4. Exact commands for each OS are on this page.

Is CVE-2022-3064 being exploited?

CVE-2022-3064 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2022-3064 affect?

CVE-2022-3064 affects yaml. Severity is high (CVSS 7.5). Parsing malicious or large YAML documents can consume excessive amounts of CPU or memory.

How urgent is CVE-2022-3064?

Priority 51/100. High severity; Remotely exploitable, no login, no user action

Related CVEs

CVE-2026-33532 MEDIUM 4.3 UPGRADE `yaml` is a YAML parser and serialiser for JavaScript
CVE-2023-2251 HIGH 7.5 UPGRADE Uncaught Exception in GitHub repository eemeli/yaml prior to 2.0.0-5.
CVE-2022-28948 HIGH 7.5 DOWNGRADE MITIGATE An issue in the Unmarshal function in Go-Yaml v3 causes the program to crash when attempting to deserialize in
CVE-2021-4235 MEDIUM 5.5 UPGRADE Due to unbounded alias chasing, a maliciously crafted YAML file can cause the system to consume significant sy

References

← Back to latest CVEs