CVE-2026-116586 Go JOSE: Panics in JSON parsing
- Exploited in the wild
- Not known
- Fix
- Available
What is CVE-2026-116586?
CVE-2026-116586 is a medium-severity vulnerability in go-jose, published on 26 Oct 2026.
Official description
Go JOSE provides an implementation of the Javascript Object Signing and Encryption set of standards in Go, including support for JSON Web Encryption (JWE), JSON Web Signature (JWS), and JSON Web Token (JWT) standards. Prior to 4.1.5, parsing attacker-controlled JSON through go-jose allows deeply nested arrays or objects to exceed Go's stack limit. The resulting stack overflow crashes the application and permits denial of service in applications that parse untrusted JSON through go-jose. This issue is fixed in version 4.1.5.
Weakness: CWE-674
Which versions are affected by CVE-2026-116586?
4 open source packages ship an affected version, including github.com/go-jose/go-jose/v3 and github.com/go-jose/go-jose/v4.
| Package | Affected | Fixed in |
|---|---|---|
github.com/go-jose/go-jose/v3 Go | All versions to 3.0.5 | None |
github.com/go-jose/go-jose/v3 Go | All versions to 3.0.5 | None |
github.com/go-jose/go-jose/v4 Go | All versions | 4.1.5 |
github.com/go-jose/go-jose/v4 Go | All versions | 4.1.5 |
How do I fix CVE-2026-116586?
Upgrade to a fixed version.
Is CVE-2026-116586 being exploited?
There is no known exploitation of CVE-2026-116586 in the wild and no public exploit code.
Sources
Also known as GHSA-vvm8-gf78-28g4, MINI-2px7-29cf-7q95, MINI-36qq-pcp3-67rf, MINI-3g94-5wxw-w946, MINI-3hr3-g42v-5g95, MINI-47x5-q4qm-m296 and 51 more.