Vulnerability · Published Nov 12, 2025 · Assigned by mitre
CVE-2025-63811
High 7.5
In plain English
A high-severity uncontrolled resource consumption in the golang-github-dvsekhvalnov-jose2go package (Debian). Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 20% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.3%top 79.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | golang-github-dvsekhvalnov-jose2go | no fix listed | DEBIAN-CVE-2025-63811 |
| Debian:13 | golang-github-dvsekhvalnov-jose2go | no fix listed | DEBIAN-CVE-2025-63811 |
| Debian:14 | golang-github-dvsekhvalnov-jose2go | 1.9-1 | DEBIAN-CVE-2025-63811 |
| Go | github.com/dvsekhvalnov/jose2go | 1.7.0 | GHSA-9mj6-hxhv-w67j |
| Go | github.com/dvsekhvalnov/jose2go | 1.7.0 | GO-2025-4123 |
| Ubuntu:22.04:LTS | golang-github-dvsekhvalnov-jose2go | no fix listed | UBUNTU-CVE-2025-63811 |
| Ubuntu:24.04:LTS | golang-github-dvsekhvalnov-jose2go | no fix listed | UBUNTU-CVE-2025-63811 |
| Ubuntu:25.10 | golang-github-dvsekhvalnov-jose2go | no fix listed | UBUNTU-CVE-2025-63811 |
| Ubuntu:26.04:LTS | golang-github-dvsekhvalnov-jose2go | no fix listed | UBUNTU-CVE-2025-63811 |
| Ubuntu:26.10 | golang-github-dvsekhvalnov-jose2go | no fix listed | UBUNTU-CVE-2025-63811 |
Affected products (as reported)
Weakness: CWE-400 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H