Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
Go JOSE (github.com/go-jose/go-jose/v4 before 4.1.4, v3 before 3.0.5, and the unversioned github.com/go-jose/go-jose at or below 2.6.3) can panic when decrypting a JWE object that uses a key wrapping algorithm with an empty encrypted_key field. An attacker who can supply such a JWE to an application that decrypts it can crash the process, causing denial of service. Upgrade v4 to 4.1.4 or v3 to 3.0.5; no fixed version is listed for the unversioned go-jose package.
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 |
|---|---|---|---|---|
| 7.5 | High | 3.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | CNA (GitHub_M) |
- CISA KEV Not listed.
- EPSS 0.0066, the 51st percentile, on 7 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 14:14 UTC First seen by agentprime
- 31 Oct 2026, 14:14 UTC Confirmed by OSV