CVE-2026-77014: Software Security Vulnerability Vulnerability

MODERATE
Advisory Identifier: GHSA-wmpg-2mpv-2hmm
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CVSS 5.3
CWE-197
Published
Advisory Summary

CVE-2026-77014 is a MODERATE (CVSS 5.3) security vulnerability vulnerability (CWE-197: Numeric Truncation Error) affecting Software libraries in the Maven ecosystem. The weakness occurs when truncation errors occur when a primitive is cast to a primitive of a smaller size and data is lost in the conversion.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-77014 at a Glance

CVE Identifier CVE-2026-77014
GHSA Identifier GHSA-wmpg-2mpv-2hmm
Severity MODERATE
CVSS v3.1 Base Score 5.3
CWE Classification CWE-197: Numeric Truncation Error
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 5.3

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:L/A:N).

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 Low (I:L)
Availability None (A:N)

How to Fix CVE-2026-77014

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-2026-77014, 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 CWE-197: Numeric Truncation Error, where truncation errors occur when a primitive is cast to a primitive of a smaller size and data is lost in the conversion. 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 flaw was found in libsoup's SoupServer HTTP Range header processing. The sort_ranges() comparator in soup-message-headers.c truncates a 64-bit subtraction result to 32-bit int, flipping the sign for range offsets differing by more than INT_MAX. This causes silent omission of requested byte ranges from HTTP 206 Partial Content responses on resources larger than approximately 2 GB.

References

NVD — CVE-2026-77014 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-77014
Software Security Information SECURITY
https://access.redhat.com/security/cve/CVE-2026-77014
bugzilla.redhat.com/show_bug.cgi WEB
https://bugzilla.redhat.com/show_bug.cgi?id=2520143
gitlab.gnome.org/gnome/libsoup/-/mer... WEB
https://gitlab.gnome.org/GNOME/libsoup/-/merge_requests/550

Frequently Asked Questions

What is CVE-2026-77014?
CVE-2026-77014 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-197: Numeric Truncation Error.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-77014?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-77014?
CVE-2026-77014 has a CVSS v3.1 base score of 5.3 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.
What CWE is associated with CVE-2026-77014?
CVE-2026-77014 is classified under CWE-197: Numeric Truncation Error (Truncation errors occur when a primitive is cast to a primitive of a smaller size and data is lost in the conversion.).
How can I check Maven dependencies for CVE-2026-77014?
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-wmpg-2mpv-2hmm",
  "modified" : "2026-08-20T09:31:18Z",
  "published" : "2026-08-20T09:31:18Z",
  "aliases" : [ "CVE-2026-77014" ],
  "details" : "A flaw was found in libsoup's SoupServer HTTP Range header processing. The sort_ranges() comparator in soup-message-headers.c truncates a 64-bit subtraction result to 32-bit int, flipping the sign for range offsets differing by more than INT_MAX. This causes silent omission of requested byte ranges from HTTP 206 Partial Content responses on resources larger than approximately 2 GB.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-77014"
  }, {
    "type" : "WEB",
    "url" : "https://access.redhat.com/security/cve/CVE-2026-77014"
  }, {
    "type" : "WEB",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2520143"
  }, {
    "type" : "WEB",
    "url" : "https://gitlab.gnome.org/GNOME/libsoup/-/merge_requests/550"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-197" ],
    "severity" : "MODERATE",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-08-20T09:16:48Z"
  }
}