CVE-2026-76878: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-25rc-jgc5-f99w
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CWE-688
Published
Advisory Summary

CVE-2026-76878 is a HIGH security vulnerability vulnerability (CWE-688: Function Call With Incorrect Variable or Reference as Argument) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product calls a function, procedure, or routine, but the caller specifies the wrong variable or reference as one of the arguments, which may lead to undefined behavior and resultant weaknesses.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-76878 at a Glance

CVE Identifier CVE-2026-76878
GHSA Identifier GHSA-25rc-jgc5-f99w
Severity HIGH
CVSS v3.1 Base Score N/A
CWE Classification CWE-688: Function Call With Incorrect Variable or Reference as Argument
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

How to Fix CVE-2026-76878

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-2026-76878, 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-688: Function Call With Incorrect Variable or Reference as Argument, where the product calls a function, procedure, or routine, but the caller specifies the wrong variable or reference as one of the arguments, which may lead to undefined behavior and resultant weaknesses. 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

In OpenStack Aodh before 22.0.1, the alarm list API bypasses project scoping when the all_projects query parameter is set to false. The API checks for the presence of the all_projects key rather than its value; a true value enforces the administrator-only policy, but a false value removes the key and skips the branch that normally restricts results to the caller's project. A non-admin user with the reader role can list alarms from all projects, exposing alarm actions containing trust webhook URLs, Heat signal endpoints, project IDs, and user IDs. The parameter can also be combined with a foreign project_id to target a specific project's alarms. A related concern is that OpenStack Watcher does not apply authorization to its webhook trigger endpoint. Any authenticated user who learns an audit's webhook URL, for example from this leaked Aodh alarm metadata, can start an EVENT audit and its associated action plan regardless of their own project or role. The webhook endpoint has lacked policy enforcement since its introduction in the Ussuri release (Watcher 4.0.0).

References

NVD — CVE-2026-76878 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-76878
launchpad.net/bugs/2161276 WEB
https://launchpad.net/bugs/2161276
launchpad.net/bugs/2161771 WEB
https://launchpad.net/bugs/2161771
lists.openstack.org/archives/list/opens... WEB
https://lists.openstack.org/archives/list/openstack-announce@lists.openstack.org/thread/O6PKAUNMNZP6FRHLUUGBYELCRBEPB52B
Software Security Information SECURITY
https://security.openstack.org/ossa/OSSA-2026-036.html
Software Security Information SECURITY
https://www.openwall.com/lists/oss-security/2026/08/19/5
Software Security Information SECURITY
http://www.openwall.com/lists/oss-security/2026/08/20/21

Frequently Asked Questions

What is CVE-2026-76878?
CVE-2026-76878 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-688: Function Call With Incorrect Variable or Reference as Argument.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-76878?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-76878?
CVE-2026-76878 is classified under CWE-688: Function Call With Incorrect Variable or Reference as Argument (The product calls a function, procedure, or routine, but the caller specifies the wrong variable or reference as one of the arguments, which may lead to undefined behavior and resultant weaknesses.).
How can I check Maven dependencies for CVE-2026-76878?
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-25rc-jgc5-f99w",
  "modified" : "2026-08-21T03:31:22Z",
  "published" : "2026-08-20T00:35:09Z",
  "aliases" : [ "CVE-2026-76878" ],
  "details" : "In OpenStack Aodh before 22.0.1, the alarm list API bypasses project scoping when the all_projects query parameter is set to false. The API checks for the presence of the all_projects key rather than its value; a true value enforces the administrator-only policy, but a false value removes the key and skips the branch that normally restricts results to the caller's project. A non-admin user with the reader role can list alarms from all projects, exposing alarm actions containing trust webhook URLs, Heat signal endpoints, project IDs, and user IDs. The parameter can also be combined with a foreign project_id to target a specific project's alarms. A related concern is that OpenStack Watcher does not apply authorization to its webhook trigger endpoint. Any authenticated user who learns an audit's webhook URL, for example from this leaked Aodh alarm metadata, can start an EVENT audit and its associated action plan regardless of their own project or role. The webhook endpoint has lacked policy enforcement since its introduction in the Ussuri release (Watcher 4.0.0).",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:L/SI:H/SA:L/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-2026-76878"
  }, {
    "type" : "WEB",
    "url" : "https://launchpad.net/bugs/2161276"
  }, {
    "type" : "WEB",
    "url" : "https://launchpad.net/bugs/2161771"
  }, {
    "type" : "WEB",
    "url" : "https://lists.openstack.org/archives/list/openstack-announce@lists.openstack.org/thread/O6PKAUNMNZP6FRHLUUGBYELCRBEPB52B"
  }, {
    "type" : "WEB",
    "url" : "https://security.openstack.org/ossa/OSSA-2026-036.html"
  }, {
    "type" : "WEB",
    "url" : "https://www.openwall.com/lists/oss-security/2026/08/19/5"
  }, {
    "type" : "WEB",
    "url" : "http://www.openwall.com/lists/oss-security/2026/08/20/21"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-688" ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-08-19T22:17:28Z"
  }
}