CVE-2021-31828

Name: CVE-2021-31828
Creator: NVD / NIST
Published: 2021-05-06T19:15:07.63+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.1/10EPSS 0.89%

Last modified Jun 17, 2026

CVE-2021-31828 is a high-severity vulnerability rated 7.1/10 on the CVSS scale. 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.. EPSS estimates a 0.89% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

7.1/10

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

EPSS Probability

0.89%

54.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-918

Affected Software

Vendor	Product	Versions
Amazon	Open Distro	< 1.13.1.0

References

https://github.com/opendistro-for-elasticsearch/alerting/pull/353Patch, Third Party Advisory
https://opendistro.github.io/for-elasticsearch-docs/version-history/Release Notes, Third Party Advisory
https://rotem-bar.com/ssrf-in-open-distro-for-elasticsearch-cve-2021-31828Third Party Advisory
https://github.com/opendistro-for-elasticsearch/alerting/pull/353Patch, Third Party Advisory
https://opendistro.github.io/for-elasticsearch-docs/version-history/Release Notes, Third Party Advisory
https://rotem-bar.com/ssrf-in-open-distro-for-elasticsearch-cve-2021-31828Third Party Advisory

Timeline

Published: May 6, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-31828?

How severe is CVE-2021-31828?

CVE-2021-31828 has a CVSS score of 7.1/10 (HIGH severity). The EPSS model estimates a 0.89% probability of exploitation in the next 30 days.

How do I fix CVE-2021-31828?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-31828?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST