How severe is CVE-2021-31828?

CVE-2021-31828 has a CVSS 3.x base score of 7.1, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity high, and availability none.

Is CVE-2021-31828 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-31828?

CVE-2021-31828 affects Amazon Open Distro. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-31828?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2021-31828 published?

CVE-2021-31828 was published on 2021-05-06 and last updated on 2026-06-17.

CVE-2021-31828

CVE-2021-31828 is a high-severity vulnerability in Amazon Open Distro with a CVSS 3.x base score of 7.1. 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-918.

Key facts

Severity: High (CVSS 3.x base score 7.1)
CVSS v2: 5.5
EPSS exploit prediction: 1% (55th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-918
Affected product: Amazon Open Distro
Published: 2021-05-06
Last modified: 2026-06-17

Description

An SSRF issue in Open Distro for Elasticsearch (ODFE) before 1.13.1.0 allows an existing privileged user to enumerate listening services or interact with configured resources via HTTP requests exceeding the Alerting plugin's intended scope.

Frequently asked questions

What is CVE-2021-31828?: An SSRF issue in Open Distro for Elasticsearch (ODFE) before 1.13.1.0 allows an existing privileged user to enumerate listening services or interact with configured resources via HTTP requests exceeding the Alerting plugin's intended scope.
How severe is CVE-2021-31828?: CVE-2021-31828 has a CVSS 3.x base score of 7.1, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity high, and availability none.
Is CVE-2021-31828 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-31828?: CVE-2021-31828 affects Amazon Open Distro. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-31828?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-31828 published?: CVE-2021-31828 was published on 2021-05-06 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:amazon:open_distro:*:*:*:*:*:elasticsearch:*:*

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