CVE-2020-10706

User impersonation via cleartext OAuth token names

Published May 12, 2020 · Updated Aug 4, 2024

Cleartext token storage in Red Hat OpenShift API Server allows attackers with backup access to impersonate recently active users. The OAuth server stores raw OAuthAccessToken and OAuthAuthorizeToken values as API object names, leaving them outside value-only etcd encryption. The flaw requires encryption at rest to be enabled and access to a backup; exposed tokens remain usable for up to 24 hours.

CVSS severity6.3
Medium
EPSS probability0.13%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cleartext token storage in Red Hat OpenShift API Server allows attackers with backup access to impersonate recently active users. The OAuth server stores raw OAuthAccessToken and OAuthAuthorizeToken values as API object names, leaving them outside value-only etcd encryption. The flaw requires encryption at rest to be enabled and access to a backup; exposed tokens remain usable for up to 24 hours.

The record

CVE
CVE-2020-10706
Published
May 12, 2020
Updated
Aug 4, 2024
Vendor
Red Hat
Product
OpenShift API Server
Classifications
CWE-312, T1550.001
Attack vector
physical
Privileges
authenticated

Timeline

How it unfolded

  1. May 12, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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  1. Affected versionversion=n/a

What conditions does exploitation require?

Attack vectorphysical
Required privilegesauthenticated

What is affected?

Red Hat · OpenShift API Serverversion=n/a

Published CVSS scores

4.6NIST NVDAV:L/AC:L/Au:N/C:P/I:P/A:P
6.3Red Hat, Inc.CVSS:3.1/AV:P/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
6.6NIST NVDCVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorphysical
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-312Cleartext Storage of Sensitive Information
T1550.001Application Access Token

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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