CVE-2025-63811: Github.com/dvsekhvalnov/jose2go Jose2go Is Vulnerable To A Vulnerability

HIGH
Advisory Identifier: GHSA-9mj6-hxhv-w67j
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CVSS 7.5
CWE-400
Published
Advisory Summary

CVE-2025-63811 is a HIGH (CVSS 7.5) jose2go is vulnerable to a vulnerability (CWE-400: Uncontrolled Resource Consumption) affecting Github.com/dvsekhvalnov/jose2go libraries in the Go ecosystem. The issue involves jose2go is vulnerable to a jwt bomb attack through its decode function. Remediation is available by upgrading affected packages to version 1.7.0.

CVE-2025-63811 at a Glance

CVE Identifier CVE-2025-63811
GHSA Identifier GHSA-9mj6-hxhv-w67j
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-400: Uncontrolled Resource Consumption
Affected Product Github.com/dvsekhvalnov/jose2go
Package Ecosystem Go
Published Date
Last Updated

Security Impact

CVSS: 7.5

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality None (C:N)
Integrity None (I:N)
Availability High (A:H)

How to Fix CVE-2025-63811

To remediate this vulnerability, upgrade all affected Github.com/dvsekhvalnov/jose2go dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

github.com/dvsekhvalnov/jose2go fixed: 1.7.0 
Upgrade github.com/dvsekhvalnov/jose2go to 1.7.0
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for github.com/dvsekhvalnov/jose2go

How to Check if You Are Affected

To determine whether your application is affected by CVE-2025-63811, inspect your project dependencies for Github.com/dvsekhvalnov/jose2go:

inspect dependencies for github.com/dvsekhvalnov/jose2go

Analyze the terminal output to locate any version of Github.com/dvsekhvalnov/jose2go in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.7.0), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-400: Uncontrolled Resource Consumption, where the product does not properly control the allocation and maintenance of a limited resource. In Github.com/dvsekhvalnov/jose2go, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

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.

CVE-2025-63811 Affected Github.com/dvsekhvalnov/jose2go Versions

1 component(s)
Fixed Versions:
1.7.0
Product / Package Ecosystem Affected Versions Fixed Version
github.com/dvsekhvalnov/jose2go
golang/github.com/dvsekhvalnov/jose2go
Go
< 1.7.0
1.7.0

References

NVD — CVE-2025-63811 NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-63811
Github.com/dvsekhvalnov/jose2go Source Repository REPOSITORY
https://github.com/dvsekhvalnov/jose2go/issues/33
Security Fix Commit FIX COMMIT
https://github.com/dvsekhvalnov/jose2go/commit/0a0673dd7f2820a446de5b04b9094b2291d77d5d
Github.com/dvsekhvalnov/jose2go Source Repository REPOSITORY
https://github.com/dvsekhvalnov/jose2go

Frequently Asked Questions

What is CVE-2025-63811?
CVE-2025-63811 is a security vulnerability in Github.com/dvsekhvalnov/jose2go involving jose2go is vulnerable to a JWT bomb attack through its decode function under CWE-400: Uncontrolled Resource Consumption.
Which Github.com/dvsekhvalnov/jose2go versions are affected?
Affected versions include releases prior to 1.7.0 across affected packages: github.com/dvsekhvalnov/jose2go.
What version fixes CVE-2025-63811?
Upgrading to 1.7.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is github.com/dvsekhvalnov/jose2go affected?
Yes, github.com/dvsekhvalnov/jose2go is affected in releases prior to 1.7.0. Upgrade your dependency to 1.7.0 or later.
What is the CVSS score of CVE-2025-63811?
CVE-2025-63811 has a CVSS v3.1 base score of 7.5 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
What CWE is associated with CVE-2025-63811?
CVE-2025-63811 is classified under CWE-400: Uncontrolled Resource Consumption (The product does not properly control the allocation and maintenance of a limited resource.).
How can I check Go dependencies for CVE-2025-63811?
Run the dependency tree command: 'inspect dependencies for github.com/dvsekhvalnov/jose2go'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-9mj6-hxhv-w67j",
  "modified" : "2025-11-14T21:44:36Z",
  "published" : "2025-11-12T18:31:25Z",
  "aliases" : [ "CVE-2025-63811" ],
  "summary" : "jose2go is vulnerable to a JWT bomb attack through its decode function",
  "details" : "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" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/dvsekhvalnov/jose2go"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.7.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-63811"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/dvsekhvalnov/jose2go/issues/33"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/dvsekhvalnov/jose2go/commit/0a0673dd7f2820a446de5b04b9094b2291d77d5d"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/dvsekhvalnov/jose2go"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-400" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2025-11-14T21:44:36Z",
    "nvd_published_at" : "2025-11-12T18:15:35Z"
  }
}