An issue was discovered in dvsekhvalnov jose2go 1.5.0 thru 1.7.0 allowing an attacker to…
Priority HIGH 72CWE-400Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Partial Red Hat: 1 without a fix
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-400.
Summary
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.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00277 20th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Partial github.com/dvsekhvalnov/jose2go (Go): 1.7.0Red Hat: 1 without a fix
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
| — | github.com/dvsekhvalnov/jose2go (Go) | before 1.7.0 | 1.7.0 | Patch available | GHSA-9mj6-hxhv-w67j |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
- github.com/dvsekhvalnov/jose2go (Go) Vendor— Affected before 1.7.0 Fixed in 1.7.0 Patch available GHSA-9mj6-hxhv-w67j
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:dvsekhvalnov:jose2go:*:*:*:*:*:go:*:* | 1.5.0 to before 1.7.0 | Vulnerable | Dvsekhvalnov |
- cpe:2.3:a:dvsekhvalnov:jose2go:*:*:*:*:*:go:*:* Versions 1.5.0 to before 1.7.0 Vulnerable ·Dvsekhvalnov
Remediation
- Fix · GHSA-9mj6-hxhv-w67j github.com/dvsekhvalnov/jose2go (Go) Fixed in 1.7.0 Advisory →
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Multicluster Engine for Kubernetes | Affected | No fix yet |
Timeline
- 2026-10-02 Threatist record created from CVE-2025-63811
- 2026-10-03 Alias added: GHSA-9mj6-hxhv-w67j
References
More Dvsekhvalnov Jose2go vulnerabilities
- TI-2023-27640 The jose2go component before 1.6.0 for Go allows attackers to cause a denial of service… CVSS 3.1HIGH 7.5
Sources
- CVE-2025-63811 · CVE Program
- CVE-2025-63811 · NVD
- FIRST EPSS
- GHSA-9mj6-hxhv-w67j · GitHub Advisory Database · CC BY 4.0
- CVE-2025-63811 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences