What’s Vulnerable › Vulnerabilities

CVE-2020-15223: Ignored storage errors on token revokation in ORY Fosite

• Severity: high (CVSS 8.0 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-09-24 · updated 2026-06-17
• Weakness: CWE-755

Description

In ORY Fosite (the security first OAuth2 & OpenID Connect framework for Go) before version 0.34.0, the `TokenRevocationHandler` ignores errors coming from the storage. This can lead to unexpected 200 status codes indicating successful revocation while the token is still valid. Whether an attacker can use this for her advantage depends on the ability to trigger errors in the store. This is fixed in version 0.34.0

Affected products

• ory fosite: before 0.34.0 — fixed in 0.34.0

How to fix

Upgrade to a fixed version: ory fosite 0.34.0. Check the vendor advisory for mitigations.

References

• https://github.com/ory/fosite/commit/03dd55813f5521985f7dd64277b7ba0cf1441319
• https://github.com/ory/fosite/security/advisories/GHSA-7mqr-2v3q-v2wm
• https://tools.ietf.org/html/rfc7009#section-2.2.1
• https://github.com/ory/fosite/commit/03dd55813f5521985f7dd64277b7ba0cf1441319
• https://github.com/ory/fosite/security/advisories/GHSA-7mqr-2v3q-v2wm
• https://tools.ietf.org/html/rfc7009#section-2.2.1

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