CVE-2026-82821: Software Security Vulnerability Vulnerability

LOW
Advisory Identifier: GHSA-vxp7-p2wj-pfx4
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CVSS 4.3
CWE-404
Published
Advisory Summary

CVE-2026-82821 is a LOW (CVSS 4.3) security vulnerability vulnerability (CWE-404: Improper Resource Shutdown or Release) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product does not release or incorrectly releases a resource before it is made available for re-use.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-82821 at a Glance

CVE Identifier CVE-2026-82821
GHSA Identifier GHSA-vxp7-p2wj-pfx4
Severity LOW
CVSS v3.1 Base Score 4.3
CWE Classification CWE-404: Improper Resource Shutdown or Release
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 4.3

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:R/S:U/C:N/I:N/A:L).

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

How to Fix CVE-2026-82821

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-2026-82821, 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-404: Improper Resource Shutdown or Release, where the product does not release or incorrectly releases a resource before it is made available for re-use. 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 vulnerability was determined in FLVMeta up to 1.2.2. Affected by this vulnerability is the function amf_object_get of the file src/amf.c of the component AMF Object Parsing. This manipulation causes null pointer dereference. The attack may be initiated remotely. The exploit has been publicly disclosed and may be utilized. Patch name: 52642f7dfb76ec7334016622dde60b1ae963d79b. To fix this issue, it is recommended to deploy a patch. The project maintainer doubts the security impact: "While I acknowledged the bugs and provided fixes, I have yet to see any way to exploit these alleged vulnerabilities."

References

NVD — CVE-2026-82821 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-82821
Software Source Repository REPOSITORY
https://github.com/noirotm/flvmeta/issues/28
Security Fix Commit FIX COMMIT
https://github.com/noirotm/flvmeta/commit/52642f7dfb76ec7334016622dde60b1ae963d79b
Software Source Repository REPOSITORY
https://github.com/raind20001020/Poc/blob/main/flvmeta_SEGV
vuldb.com/cve/cve-2026-82821 WEB
https://vuldb.com/cve/CVE-2026-82821
vuldb.com/submit/876597 WEB
https://vuldb.com/submit/876597
vuldb.com/vuln/397244 WEB
https://vuldb.com/vuln/397244
vuldb.com/vuln/397244/cti WEB
https://vuldb.com/vuln/397244/cti

Frequently Asked Questions

What is CVE-2026-82821?
CVE-2026-82821 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-404: Improper Resource Shutdown or Release.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-82821?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-82821?
CVE-2026-82821 has a CVSS v3.1 base score of 4.3 (LOW) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L.
What CWE is associated with CVE-2026-82821?
CVE-2026-82821 is classified under CWE-404: Improper Resource Shutdown or Release (The product does not release or incorrectly releases a resource before it is made available for re-use.).
How can I check Maven dependencies for CVE-2026-82821?
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-vxp7-p2wj-pfx4",
  "modified" : "2026-08-31T21:32:10Z",
  "published" : "2026-08-31T21:32:10Z",
  "aliases" : [ "CVE-2026-82821" ],
  "details" : "A vulnerability was determined in FLVMeta up to 1.2.2. Affected by this vulnerability is the function amf_object_get of the file src/amf.c of the component AMF Object Parsing. This manipulation causes null pointer dereference. The attack may be initiated remotely. The exploit has been publicly disclosed and may be utilized. Patch name: 52642f7dfb76ec7334016622dde60b1ae963d79b. To fix this issue, it is recommended to deploy a patch. The project maintainer doubts the security impact: \"While I acknowledged the bugs and provided fixes, I have yet to see any way to exploit these alleged vulnerabilities.\"",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/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-2026-82821"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/noirotm/flvmeta/issues/28"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/noirotm/flvmeta/commit/52642f7dfb76ec7334016622dde60b1ae963d79b"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/raind20001020/Poc/blob/main/flvmeta_SEGV"
  }, {
    "type" : "WEB",
    "url" : "https://vuldb.com/cve/CVE-2026-82821"
  }, {
    "type" : "WEB",
    "url" : "https://vuldb.com/submit/876597"
  }, {
    "type" : "WEB",
    "url" : "https://vuldb.com/vuln/397244"
  }, {
    "type" : "WEB",
    "url" : "https://vuldb.com/vuln/397244/cti"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-404" ],
    "severity" : "LOW",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-08-31T19:17:23Z"
  }
}