How severe is CVE-2021-37914?

CVE-2021-37914 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability low.

Is CVE-2021-37914 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-37914?

CVE-2021-37914 affects Argoproj Argo Workflows. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-37914?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-37914 published?

CVE-2021-37914 was published on 2021-08-03 and last updated on 2026-06-17.

CVE-2021-37914

CVE-2021-37914 is a medium-severity vulnerability in Argoproj Argo Workflows with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 5.8
EPSS exploit prediction: 1% (57th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Argoproj Argo Workflows
Published: 2021-08-03
Last modified: 2026-06-17

Description

In Argo Workflows through 3.1.3, if EXPRESSION_TEMPLATES is enabled and untrusted users are allowed to specify input parameters when running workflows, an attacker may be able to disrupt a workflow because expression template output is evaluated.

Frequently asked questions

What is CVE-2021-37914?: In Argo Workflows through 3.1.3, if EXPRESSION_TEMPLATES is enabled and untrusted users are allowed to specify input parameters when running workflows, an attacker may be able to disrupt a workflow because expression template output is evaluated.
How severe is CVE-2021-37914?: CVE-2021-37914 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability low.
Is CVE-2021-37914 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-37914?: CVE-2021-37914 affects Argoproj Argo Workflows. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-37914?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-37914 published?: CVE-2021-37914 was published on 2021-08-03 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:argoproj:argo_workflows:*:*:*:*:*:go:*:*

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