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CVE Record

CVE-2022-31036: Symlink following allows leaking out-of-bounds YAML files from Argo CD repo-server

Argo CD is a declarative, GitOps continuous delivery tool for Kubernetes. All versions of Argo CD starting with v1.3.0 are vulnerable to a symlink following bug allowing a malicious user with repository write access to leak sensitive YAML files from Argo CD's repo-server. A malicious Argo CD user with write access for a repository which is (or may be) used in a Helm-type Application may commit a symlink which points to an out-of-bounds file. If the target file is a valid YAML file, the attacker can read the contents of that file. Sensitive files which could be leaked include manifest files from other Applications' source repositories (potentially decrypted files, if you are using a decryption plugin) or any YAML-formatted secrets which have been mounted as files on the repo-server. Patches for this vulnerability has been released in the following Argo CD versions: v2.4.1, v2.3.5, v2.2.10 and v2.1.16. If you are using a version >=v2.3.0 and do not have any Helm-type Applications you may disable the Helm config management tool as a workaround.

MediumCVSS 4.3Not KEV-listedUpdated
Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

This Argo CD flaw can let a repository writer read certain YAML files outside their repository from the repo-server. The business risk is limited but real: secrets, decrypted manifests, or other application manifests could be exposed if stored or mounted as YAML on the repo-server.

Executive priority

Treat this as a moderate confidentiality issue. Prioritize patching shared or multi-team Argo CD deployments, especially where repository write access is broad or repo-server handles secrets and decrypted manifests.

Technical view

Affected Argo CD repo-server versions follow crafted symlinks in repositories used with Helm-type Applications. A low-privileged user with repository write access can cause Argo CD to read an out-of-bounds target when that target is valid YAML. The impact is confidentiality only per the supplied CVSS vector.

Likely exposure

Exposure is likely where Argo CD versions from v1.3.0 through the listed vulnerable ranges are used, especially with Helm-type Applications and repository writers who are not fully trusted. Risk increases when repo-server has mounted YAML secrets, decrypted files, or other applications' YAML manifests.

Exploitation context

The source bundle does not show active exploitation, and KEV is false. Exploitation requires repository write access to a repository used, or potentially used, in a Helm-type Application. The attacker can only read target files that are valid YAML.

Researcher notes

CWE mappings are CWE-20 and CWE-61. CVSS is 4.3, AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N. The key boundary condition is that the out-of-bounds target must parse as YAML. Evidence is from the CVE record and Argo CD advisory.

Mitigation direction

  • Upgrade Argo CD to v2.4.1, v2.3.5, v2.2.10, v2.1.16, or later fixed releases.
  • For Argo CD >=v2.3.0 without Helm-type Applications, disable the Helm config management tool.
  • Review repo-server mounted files and avoid mounting sensitive YAML secrets where possible.
  • Restrict repository write access to trusted users and service accounts.

Validation and detection

  • Inventory Argo CD versions and compare them with the affected version ranges.
  • Identify Helm-type Applications and confirm whether Helm config management is enabled.
  • Review who has write access to repositories used by Argo CD Applications.
  • Check whether repo-server mounts YAML secrets, decrypted manifests, or other sensitive YAML files.
Prepared
Confidence
high
Sources
4

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

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cwe · low confidence lookup

CWE-20: Exact CWE lookup

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cwe · low confidence lookup

CWE-61: Exact CWE lookup

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description · low confidence lookup

Container behavior lookup

The affected technology mentions containers, so container-specific ATT&CK technique review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.

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cve · low confidence lookup

CVE-2022-31036 mapping review

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Vulnerability profileCVE Program record
Severity
Medium
CVSS
4.3 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

1CVSS vectors
0Timeline events
0ADP providers
3Source links

CVSS vector scores

1 official score

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
4.3CVSS 3.1MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N2.81.4Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

4.3Medium
CVSS 3.1 vector shape for CVE-2022-31036Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone
Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
argoprojargo-cd>= 1.3.0, < 2.1.16, >= 2.2.0, < 2.2.10, >= 2.3.0, < 2.3.5, >= 2.4.0, < 2.4.1Listed
Weakness

CWE details

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.