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Fencer Vulns
high 8.0

CVE-2020-15223 json

Ignored storage errors on token revokation in ORY Fosite

published 2020-09-24 6 y ago modified 2026-09-10 1 mo ago also GHSA-7mqr-2v3q-v2wm , GO-2021-0109 , EUVD-2021-1002

cvss
8.0
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.6%
EPSS 1.6% chance of exploitation in 30 days, percentile 75%
public exploits
0
none known

Summary

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

Patch / fix

  • go github.com/ory/fosite 0.34.0
  • ory fosite 0.34.0

Exploit prediction

1.59% chance of exploitation in the next 30 days, higher than 75% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 8.0 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N
NVD 3.1 8.0 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N
NVD 2.0 4.0 AV:N/AC:H/Au:N/C:P/I:P/A:N
GitHub 3.1 8.0 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N

Affected packages

ecosystem package affected fixed in
go github.com/ory/fosite
<0.34.0
0.34.0

Affected products

  • ory fosite

Classification

Weakness
  • CWE-755 Improper Handling of Exceptional Conditions
  • CWE-754 Improper Check for Unusual or Exceptional Conditions

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.