ZITADEL: Unauthorized Token Privilege Escalation in OAuth2 Token Exchange

Publishers link these advisories through the identifiers shown below. A shared identifier or date alone does not tell you whether your software is affected or whether the advisories describe the same cause.

CVE-2026-56668 · CVE overview and exploitation status

EUVD-2026-42967

GHSA-vrh8-c9cm-wh8v

GO-2026-6474

cve-program · CVE-2026-56668

• https://github.com/zitadel/zitadel/security/advisories/GHSA-vrh8-c9cm-wh8v
• https://github.com/zitadel/zitadel/commit/e2886a61670ca8fd41c9434f87036546e5620bcc
• https://github.com/zitadel/zitadel/releases/tag/v4.15.3

euvd · EUVD-2026-42967

• https://github.com/zitadel/zitadel/security/advisories/GHSA-vrh8-c9cm-wh8v
• https://github.com/zitadel/zitadel/commit/e2886a61670ca8fd41c9434f87036546e5620bcc
• https://github.com/zitadel/zitadel/releases/tag/v4.15.3

nvd · CVE-2026-56668

• https://github.com/zitadel/zitadel/commit/e2886a61670ca8fd41c9434f87036546e5620bcc
• https://github.com/zitadel/zitadel/releases/tag/v4.15.3
• https://github.com/zitadel/zitadel/security/advisories/GHSA-vrh8-c9cm-wh8v

osv · GHSA-vrh8-c9cm-wh8v

• https://github.com/zitadel/zitadel/security/advisories/GHSA-vrh8-c9cm-wh8v
• https://nvd.nist.gov/vuln/detail/CVE-2026-56668
• https://github.com/zitadel/zitadel/commit/e2886a61670ca8fd41c9434f87036546e5620bcc
• https://github.com/zitadel/zitadel
• https://github.com/zitadel/zitadel/releases/tag/v4.15.3

osv · GO-2026-6474

• https://github.com/zitadel/zitadel/security/advisories/GHSA-vrh8-c9cm-wh8v
• https://nvd.nist.gov/vuln/detail/CVE-2026-56668
• https://github.com/zitadel/zitadel/commit/e2886a61670ca8fd41c9434f87036546e5620bcc
• https://github.com/zitadel/zitadel/releases/tag/v4.15.3

No related changes are available here.