CVE-2026-7307

highpriority · track · 0EPSS 0.009 · 59 %ileDEEURUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.88% (59th) EPSS

CVSS 7.5 · high

Is it mine?

16 products

Check your exposure

Who says so?

6 sources

cnnvd · enisa_euvd · fstec_bdu · osv

EPSS · scored 2026-10-27

A flaw was found in Keycloak. A remote, unauthenticated attacker can send a specially crafted XML input to the Security Assertion Markup Language (SAML) endpoint. This malicious input can cause high CPU usage and worker thread starvation, leading to a Denial of Service (DoS) where the server becomes unavailable.

cvss

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

7.5

010

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

v3.17.5highAV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · FSTEC (BDU) RU

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · ENISA EU

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · secalert@redhat.com USexploitability 3.9 · impact 3.6

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondaryexploitability 3.9 · impact 3.6

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · OSV

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-1286USCWE-1286USCWE-1286US

affected products (16)

Products and version ranges known to be affected.

Open Source Keycloak <26.6.2all versionscert_bundDE
Red Hat Enterprise Linuxall versionscert_bundDEcpe:/o:redhat:enterprise_linux:-
Open Source Keycloak< 26.6.2cert_bundDE
Red Hat Red Hat build of Keycloak 26.2< 26.2-21enisa_euvdEU
Red Hat Red Hat build of Keycloak 26.2< 26.2.16-1enisa_euvdEU
Red Hat Red Hat build of Keycloak 26.4< 26.4-17enisa_euvdEU
Red Hat Red Hat build of Keycloak 26.4< 26.4.12-1enisa_euvdEU
Red Hat, Inc. KeyCloak≤ 26.2fstec_bduRU
Red Hat, Inc. KeyCloak≤ 26.2.16fstec_bduRU
Red Hat, Inc. KeyCloak≤ 26.4fstec_bduRU
Red Hat, Inc. KeyCloak≤ 26.4.12fstec_bduRU
АО «ИВК» АЛЬТ СП 10all versionsfstec_bduRU
АО «СберТех» Platform V IAM SE≤ 2.3.1fstec_bduRU
redhat build of keycloak26.4 → 26.4.12nvdUScpe:2.3:a:redhat:build_of_keycloak:*:*:*:*:*:*:*:*
Bitnami keycloak26.4.0 → 26.4.12osvUSpkg:bitnami/keycloak
Maven org.keycloak:keycloak-saml-core< 26.6.2osvUSpkg:maven/org.keycloak/keycloak-saml-core

advisories (3)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2026-1612Keycloak: Mehrere SchwachstellenDeutsch2026-05-19csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Keycloak ausnutzen, um Informationen offenzulegen, Daten zu manipulieren, Sicherheitsvorkehrungen zu umgehen und einen Denial of Service zu verursachen.
GHSA-p5mv-gj8j-xqgfKeycloak: Denial of Service via specially crafted SAML input2026-05-19ghsa · osvUS
A flaw was found in Keycloak. A remote, unauthenticated attacker can send a specially crafted XML input to the Security Assertion Markup Language (SAML) endpoint. This malicious input can cause high CPU usage and worker thread starvation, leading to a Denial of Service (DoS) where the server becomes unavailable.
BIT-keycloak-2026-7307Keycloak: keycloak: denial of service via specially crafted saml input2026-08-25vendor · osvUS
A flaw was found in Keycloak. A remote, unauthenticated attacker can send a specially crafted XML input to the Security Assertion Markup Language (SAML) endpoint. This malicious input can cause high CPU usage and worker thread starvation, leading to a Denial of Service (DoS) where the server becomes unavailable.

also known as (6)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu osv cert_bund nvd NVD CVE.org MITRE

published 2026-05-19modified 2026-10-26

references (20)

External citations — patches, advisories, analysis.

scry

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