CVE-2025-63811

7.5 highEPSS 0.3%

High (7.5) in dvsekhvalnov jose2go. EPSS 0.3% chance of exploitation in the next 30 days. Fixed in github.com/dvsekhvalnov/jose2go 1.7.0.

An issue was discovered in dvsekhvalnov jose2go 1.5.0 thru 1.7.0 allowing an attacker to cause a Denial-of-Service (DoS) via crafted JSON Web Encryption (JWE) token with an exceptionally high compression ratio.

Severity

CVSS 3.1

7.5 high

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS: 0.3% chance of exploitation in the next 30 days; higher than 20% of CVEs (scores of 2026-10-31)
CWE: CWE-400
Published: 2025-11-12
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

dvsekhvalnov:jose2go

Packages (OSV)

Advisory	Ecosystem	Package	Affected	Fixed in
GHSA-9mj6-hxhv-w67j	Go	github.com/dvsekhvalnov/jose2go	<1.7.0	1.7.0
GO-2025-4123	Go	github.com/dvsekhvalnov/jose2go	<1.7.0	1.7.0

References

https://github.com/dvsekhvalnov/jose2go/issues/33

Check your stack JSON