CVE-2026-23552

criticalpriority · track · 10EPSS 0.006 · 49 %ileexploit · PoCDEEUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

1 exploit · PoC

Likely / severe?

0.61% (49th) EPSS

CVSS 9.1 · critical

Is it mine?

9 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · cert_bund · nvd

EPSS · scored 2026-10-27

Cross-Realm Token Acceptance Bypass in KeycloakSecurityPolicy Apache Camel Keycloak component. The Camel-Keycloak KeycloakSecurityPolicy does not validate the iss (issuer) claim of JWT tokens against the configured realm. A token issued by one Keycloak realm is silently accepted by a policy configured for a completely different realm, breaking tenant isolation. This issue affects Apache Camel: from 4.15.0 before 4.18.0. Users are recommended to upgrade to version 4.18.0, which fixes the issue.

cvss

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

9.1

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 8.6–9.1

v3.19.1criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Nsecondary · ENISA EU

v3.19.1criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Nsecondaryexploitability 3.9 · impact 5.2

v3.19.1criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Nsecondary · OSV

v3.18.6highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N/E:Psecondary · CVSS-BT (t0sche)

ssvc

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

Exploitation: poc · Automatable: yes · Technical Impact: partialcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-346USCWE-346US

exploits (1)

Public proof-of-concept and weaponised exploit code.

oscerd/CVE-2026-23552CVE-2026-23552 - Cross-Realm Token Acceptance in camel-keycloakPoC · poc_in_github

affected products (9)

Products and version ranges known to be affected.

Apache Camel <4.10.9all versionscert_bundDE
Apache Camel <4.14.5all versionscert_bundDE
Apache Camel <4.18.0all versionscert_bundDE
Apache Camel< 4.10.9cert_bundDE
Apache Camel< 4.14.5cert_bundDE
Apache Camel< 4.18.0cert_bundDE
Apache Software Foundation Apache Camel4.15.0 → 4.18.0enisa_euvdEU
apache camel4.15.0 → 4.18.0nvdUScpe:2.3:a:apache:camel:*:*:*:*:*:*:*:*
Maven org.apache.camel:camel-keycloak4.15.0 → 4.18.0osvUSpkg:maven/org.apache.camel/camel-keycloak

advisories (2)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2026-0445Apache Camel: Mehrere SchwachstellenDeutsch2026-02-17csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Apache Camel ausnutzen, um Sicherheitsvorkehrungen zu umgehen, und um beliebigen Programmcode auszuführen.
GHSA-c3f3-cc42-xr9vApache Camel: KeycloakSecurityPolicy does not validate issuer of JWT tokens against configured realm2026-02-23ghsa · osvUS
Cross-Realm Token Acceptance Bypass in KeycloakSecurityPolicy Apache Camel Keycloak component. The Camel-Keycloak KeycloakSecurityPolicy does not validate the iss (issuer) claim of JWT tokens against the configured realm. A token issued by one Keycloak realm is silently accepted by a policy configured for a completely different realm, breaking tenant isolation. This issue affects Apache Camel: from 4.15.0 before 4.18.0. Users are recommended to upgrade to version 4.18.0, which fixes the issue.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cert_bund nvd osv NVD CVE.org MITRE

published 2026-02-23modified 2026-06-17

references (8)

External citations — patches, advisories, analysis.

http://www.openwall.com/lists/oss-security/2026/02/18/7 cnnvd
https://camel.apache.org/security/CVE-2026-23552.html cnnvd
https://github.com/oscerd/CVE-2026-23552 cnnvd
https://camel.apache.org/security/CVE-2026-23552.html enisa_euvd
https://github.com/oscerd/CVE-2026-23552 enisa_euvd
http://www.openwall.com/lists/oss-security/2026/02/18/7Mailing ListThird Party Advisorynvd
https://camel.apache.org/security/CVE-2026-23552.htmlVendor Advisorynvd
https://github.com/oscerd/CVE-2026-23552ExploitThird Party Advisorynvd

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