CVE-2020-1698

Password disclosure via request parameters in exception logs

Published May 11, 2020 · Updated Aug 4, 2024

Sensitive-data exposure in Red Hat build of Keycloak before 9.0.0 allows local users to read a password from exception logs. HttpMethod.execute builds a RuntimeException message with the entire request builder, whose string form includes request parameters, instead of logging only the HTTP method. A low-privileged local user must gain access to the resulting logs after another user triggers the exception; the consequence is password disclosure only.

CVSS severity5.0
Medium
EPSS probability0.37%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Sensitive-data exposure in Red Hat build of Keycloak before 9.0.0 allows local users to read a password from exception logs. HttpMethod.execute builds a RuntimeException message with the entire request builder, whose string form includes request parameters, instead of logging only the HTTP method. A low-privileged local user must gain access to the resulting logs after another user triggers the exception; the consequence is password disclosure only.

The record

CVE
CVE-2020-1698
Published
May 11, 2020
Updated
Aug 4, 2024
Vendor
Red Hat
Product
Red Hat build of Keycloak
Classifications
CWE-200, CWE-532, T1552.001
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 11, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=All versions before 9.0.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Red Hat · Red Hat build of Keycloakversion=All versions before 9.0.0

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
2.1NIST NVDAV:L/AC:L/Au:N/C:P/I:N/A:N
5.0Red Hat, Inc.CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N

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)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor
CWE-532Insertion of Sensitive Information into Log File
T1552.001Credentials In Files

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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