CVE-2026-77151: Software Security Vulnerability Vulnerability

MODERATE
Advisory Identifier: GHSA-m3r5-hc33-p4wf
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CVSS 3.7
Published
Advisory Summary

CVE-2026-77151 is a MODERATE (CVSS 3.7) security vulnerability vulnerability (General Security Weakness) affecting Software libraries in the Maven ecosystem. Remediation is available in the latest vendor maintenance releases.

CVE-2026-77151 at a Glance

CVE Identifier CVE-2026-77151
GHSA Identifier GHSA-m3r5-hc33-p4wf
Severity MODERATE
CVSS v3.1 Base Score 3.7
CWE Classification General Security Weakness
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 3.7

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

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

How to Fix CVE-2026-77151

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

Verify Direct and Transitive Dependencies

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

mvn dependency:tree

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2026-77151, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree

Analyze the terminal output to locate any version of Software in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than the patched release), your application is affected.

Note: The mvn dependency:tree command inspects the resolved dependency graph declared in your project's POM files; it does not perform automated security scanning or inspect runtime dynamic classpaths. Always verify runtime container classpaths and shaded JARs.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under General Security Weakness. In Software, 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

A security flaw has been discovered in lin-snow Ech0 up to 5.4.1. Affected by this issue is the function MD5Encrypt of the file internal/util/crypto/crypto.go. Performing a manipulation results in risky cryptographic algorithm. Remote exploitation of the attack is possible. The complexity of an attack is rather high. The exploitation is known to be difficult. Upgrading to version 5.4.2 can resolve this issue. The patch is named 9ce19a3b0d0765086a655f45d3a706ec1810404f. It is recommended to upgrade the affected component.

References

NVD — CVE-2026-77151 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-77151
Software Source Repository REPOSITORY
https://github.com/lin-snow/Ech0/issues/314
Software Source Repository REPOSITORY
https://github.com/lin-snow/Ech0/pull/315
Security Fix Commit FIX COMMIT
https://github.com/lin-snow/Ech0/commit/9ce19a3b0d0765086a655f45d3a706ec1810404f
Software Source Repository REPOSITORY
https://github.com/lin-snow/Ech0
Software Release RELEASE
https://github.com/lin-snow/Ech0/releases/tag/ech0-5.4.2
vuldb.com/cve/cve-2026-77151 WEB
https://vuldb.com/cve/CVE-2026-77151
vuldb.com/submit/881015 WEB
https://vuldb.com/submit/881015
vuldb.com/vuln/393736 WEB
https://vuldb.com/vuln/393736
vuldb.com/vuln/393736/cti WEB
https://vuldb.com/vuln/393736/cti

Frequently Asked Questions

What is CVE-2026-77151?
CVE-2026-77151 is a security vulnerability in Software classified as a security vulnerability vulnerability under General Security Weakness.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-77151?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-77151?
CVE-2026-77151 has a CVSS v3.1 base score of 3.7 (MODERATE) with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N.
What CWE is associated with CVE-2026-77151?
CVE-2026-77151 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-77151?
Run the dependency tree command: 'mvn dependency:tree'. 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-m3r5-hc33-p4wf",
  "modified" : "2026-08-20T21:31:29Z",
  "published" : "2026-08-20T21:31:29Z",
  "aliases" : [ "CVE-2026-77151" ],
  "details" : "A security flaw has been discovered in lin-snow Ech0 up to 5.4.1. Affected by this issue is the function MD5Encrypt of the file internal/util/crypto/crypto.go. Performing a manipulation results in risky cryptographic algorithm. Remote exploitation of the attack is possible. The complexity of an attack is rather high. The exploitation is known to be difficult. Upgrading to version 5.4.2 can resolve this issue. The patch is named 9ce19a3b0d0765086a655f45d3a706ec1810404f. It is recommended to upgrade the affected component.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-77151"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/lin-snow/Ech0/issues/314"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/lin-snow/Ech0/pull/315"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/lin-snow/Ech0/commit/9ce19a3b0d0765086a655f45d3a706ec1810404f"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/lin-snow/Ech0"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/lin-snow/Ech0/releases/tag/ech0-5.4.2"
  }, {
    "type" : "WEB",
    "url" : "https://vuldb.com/cve/CVE-2026-77151"
  }, {
    "type" : "WEB",
    "url" : "https://vuldb.com/submit/881015"
  }, {
    "type" : "WEB",
    "url" : "https://vuldb.com/vuln/393736"
  }, {
    "type" : "WEB",
    "url" : "https://vuldb.com/vuln/393736/cti"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "MODERATE",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-08-20T20:17:47Z"
  }
}