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CVE-2020-10758 Keycloak

Affected softwareKeycloak
Severity7.5 High CVSS 3.1 2 scores
Fixed in11.0.1
WeaknessCWE-770
Published16 Sep 2020
Updated17 Jun 2026

Description

A vulnerability was found in Keycloak before 11.0.1 where DoS attack is possible by sending twenty requests simultaneously to the specified keycloak server, all with a Content-Length header value that exceeds the actual byte count of the request body.

Exploitation status

No public exploit

No exploit has been reported in the sources we check. Published 6 years ago.

  • CISA KEV not listed
  • VulnCheck KEV not listed
  • CISA Vulnrichment no assessment published
  • Indexed PoC none indexed
  • EPSS 1.9% chance in 30 days

Waratek protection

No exploit published

Within Waratek scope. In the sources we check, nobody has published exploit code for this CVE or reported it being exploited.

A public code fix exists: keycloak/keycloak bee4ca8.

  • Protection none
  • Action unverified
  • Review automated Upstream data
  • Record active
Decided by Exploit code for this candidate, published in a reviewed catalogue or a GitHub repository with 5 or more stars, or in use per CISA or VulnCheck; not only a CISA verdict, a forecast, or nothing at all
Finding This CVE is not listed in CISA KEV or VulnCheck KEV, CISA Vulnrichment records no active exploitation, no reviewed exploit catalogue carries an entry for it, and no GitHub PoC repository for it has 5 or more stars. Nobody has published exploit code worth tracing, so it is not a candidate for a rule ahead of the ones where somebody has; an upstream fix path does exist, so the remediation half of the candidacy still holds. This is a statement about what has been published, not about whether the defect is reachable or serious.
Candidate fix https://github.com/keycloak/keycloak/commit/bee4ca89897766c4b68856eafe14f1a3dad34251 : a commit: the change itself

CVSS

7.5 HIGH v3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H 2 metrics

We show the highest score from the newest CVSS version. Scores from different versions can't be compared, and the first score listed is sometimes a 0.0 placeholder.

VersionScoreBandVectorAssignerType
CVSS 3.1 7.5 HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H NVD Primary published
CVSS 2.0 5.0 none AV:N/AC:L/Au:N/C:N/I:N/A:P NVD Primary

Affected software and releases

Maven packages

Affected and fixed versions, from OSV.dev
PackageIntroducedFixedLast affected
org.keycloak:keycloak-parent 0 11.0.1 unbounded

Products and versions

4 products, 7 version entries
SourceVendorProductSchemeAffected versions
osv org.keycloak keycloak-parent generic < 11.0.1
nvd redhat keycloak generic < 11.0.1
nvd redhat openshift application runtimes generic any version · 1.0
nvd redhat single sign-on generic any version · 7.0 · 7.4

References

URLTags
https://github.com/keycloak/keycloak/commit/bee4ca89897766c4b68856eafe14f1a3dad34251 commit
https://bugzilla.redhat.com/show_bug.cgi?id=1843849 WEB

Timeline

Published2020-09-16By the CVE Program.
NVD record modified2026-06-17NVD's own last-modified date for this record.