CVE-2026-0707

mediumpriority · track · 0EPSS 0.004 · 34 %ileDEEUJPUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.40% (34th) EPSS

CVSS 5.3 · medium

Is it mine?

8 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · cert_bund · osv

EPSS · scored 2026-10-27

A flaw was found in Keycloak. The Keycloak Authorization header parser is overly permissive regarding the formatting of the "Bearer" authentication scheme. It accepts non-standard characters (such as tabs) as separators and tolerates case variations that deviate from RFC 6750 specifications.

cvss

Technical severity, 0–10. One row per scoring source.

5.3

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.15.3mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:Nsecondary · ENISA EU

v3.15.3mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:Nsecondary · secalert@redhat.com USexploitability 3.9 · impact 1.4

v3.15.3mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:Nsecondary · OSV

v3.14.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: yes · Technical Impact: partialcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-551USCWE-551US

affected products (8)

Products and version ranges known to be affected.

Open Source Keycloakall versionscert_bundDEcpe:/a:keycloak:keycloak:-
Open Source Keycloak <26.6.3all versionscert_bundDE
Red Hat Enterprise Linuxall versionscert_bundDEcpe:/o:redhat:enterprise_linux:-
Red Hat Enterprise Linux Keycloakall versionscert_bundDEcpe:/o:redhat:enterprise_linux:keycloak
Open Source Keycloak< 26.6.3cert_bundDE
Red Hat Red Hat build of Keycloak 26.4< 26.4-12enisa_euvdEU
Red Hat Red Hat build of Keycloak 26.4< 26.4.10-1enisa_euvdEU
Maven org.keycloak:keycloak-parent≤ 26.5.0osvUSpkg:maven/org.keycloak/keycloak-parent

advisories (3)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2026-0034Keycloak: Schwachstelle ermöglicht Umgehen von SicherheitsvorkehrungenDeutsch2026-01-07csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann eine Schwachstelle in Keycloak und Red Hat Enterprise Linux ausnutzen, um Sicherheitsvorkehrungen zu umgehen.
GHSA-gv94-wp4h-vv8pKeycloak has Incorrect Behavior Order: Authorization Before Parsing and Canonicalization2026-01-08ghsa · osvUS
A flaw was found in Keycloak. The Keycloak Authorization header parser is overly permissive regarding the formatting of the "Bearer" authentication scheme. It accepts non-standard characters (such as tabs) as separators and tolerates case variations that deviate from RFC 6750 specifications.
JVNDB-2026-026852JVN iPedia advisory JVNDB-2026-0268522026-08-05vendor · jvndbJP

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cert_bund osv jvndb NVD CVE.org MITRE

published 2026-01-08modified 2026-10-26

references (14)

External citations — patches, advisories, analysis.

scry

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