Resource exhaustion in Dvsekhvalnov Jose2go

CVE-2025-63811

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.

Vulnerability class: DoS (Denial of Service)

EPSS: 0.002 (14.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2025-63811?
CVE-2025-63811 is a high-severity vulnerability in Dvsekhvalnov Jose2go, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2025-11-12.
How severe is CVE-2025-63811?
High severity. CVSS v3 base score is 7.5 out of 10.