Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
Duende.AccessTokenManagement versions before 3.2.0 contain a race condition in client credentials token retrieval. When concurrent calls use different TokenRequestParameters, they can receive a token issued with another call's scope, resource indicator, or other protocol parameters. The attacker-side conditions are not fully described, and the impact depends on the application's authorization setup. Upgrade to version 3.2.0 or later.
Not analysed yet
We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.
Severity and exploitation
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 6.3 | Medium | 4.0 | CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N | CNA (GitHub_M) |
- CISA KEV Not listed.
- EPSS 0.0039, the 33rd percentile, on 12 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 15:22 UTC First seen by agentprime
- 31 Oct 2026, 15:22 UTC Confirmed by OSV