CVE-2026-52954: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-2rwm-p2mw-2gwh
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CVSS 7.5
CWE-617 CWE-20
Published
Advisory Summary

CVE-2026-52954 is a HIGH (CVSS 7.5) security vulnerability vulnerability (CWE-617: Reachable Assertion) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product contains an assert() or similar statement that can be triggered by an attacker, which leads to an application exit or other behavior that is more severe than necessary.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-52954 at a Glance

CVE Identifier CVE-2026-52954
GHSA Identifier GHSA-2rwm-p2mw-2gwh
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-617: Reachable Assertion
Affected Product Software
Package Ecosystem Maven
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-2026-52954

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-2026-52954, 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-617: Reachable Assertion, where the product contains an assert() or similar statement that can be triggered by an attacker, which leads to an application exit or other behavior that is more severe than necessary. 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 the Linux kernel, the following vulnerability has been resolved: libceph: handle rbtree insertion error in decode_choose_args() A message of type CEPH_MSG_OSD_MAP contains an OSD map that itself contains a CRUSH map. The received CRUSH map may optionally contain choose_args that get decoded in decode_choose_args(). In this function, num_choose_arg_maps is read from the message, and a corresponding number of crush_choose_arg_maps gets decoded afterwards. Each crush_choose_arg_map has a choose_args_index, which serves as the key when inserting it into the choose_args rbtree of the decoded crush_map. If a (potentially corrupted) message contains two crush_choose_arg_maps with the same index, the assertion in insert_choose_arg_map() triggers a kernel BUG when trying to insert the second crush_choose_arg_map. This patch fixes the issue by switching to the non-asserting rbtree insertion function and rejecting the message if the insertion fails. [ idryomov: changelog ]

References

NVD — CVE-2026-52954 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-52954
git.kernel.org/stable/c/0a1265a9ab... WEB
https://git.kernel.org/stable/c/0a1265a9ab875f92b6a3ffb497404f46cf9d76a3
git.kernel.org/stable/c/0b6a3bcb91... WEB
https://git.kernel.org/stable/c/0b6a3bcb91bc5bfeda39f0df3b71bab62c13e9da
git.kernel.org/stable/c/4d2b37abda... WEB
https://git.kernel.org/stable/c/4d2b37abda9536808655830d683dc491d31741a8
git.kernel.org/stable/c/534ebc08df... WEB
https://git.kernel.org/stable/c/534ebc08df97c47d4c7596f336fa31ecbf91519c
git.kernel.org/stable/c/80c73bd1b2... WEB
https://git.kernel.org/stable/c/80c73bd1b2b04355d1d0c29be8ccbd25a380905d
git.kernel.org/stable/c/c7bf7864e2... WEB
https://git.kernel.org/stable/c/c7bf7864e2924fa5508ac270b0e9364bc13d5a6c
git.kernel.org/stable/c/d289478cfc... WEB
https://git.kernel.org/stable/c/d289478cfc0bcf81c7914200d6abdcb78bd04ded
git.kernel.org/stable/c/f47430fc1f... WEB
https://git.kernel.org/stable/c/f47430fc1f815e87406e2d3b4e476eff1bc7fd9b

Frequently Asked Questions

What is CVE-2026-52954?
CVE-2026-52954 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-617: Reachable Assertion.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-52954?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-52954?
CVE-2026-52954 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-2026-52954?
CVE-2026-52954 is classified under CWE-617: Reachable Assertion (The product contains an assert() or similar statement that can be triggered by an attacker, which leads to an application exit or other behavior that is more severe than necessary.).
How can I check Maven dependencies for CVE-2026-52954?
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-2rwm-p2mw-2gwh",
  "modified" : "2026-06-28T09:31:37Z",
  "published" : "2026-06-24T18:32:41Z",
  "aliases" : [ "CVE-2026-52954" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nlibceph: handle rbtree insertion error in decode_choose_args()\n\nA message of type CEPH_MSG_OSD_MAP contains an OSD map that itself\ncontains a CRUSH map. The received CRUSH map may optionally contain\nchoose_args that get decoded in decode_choose_args(). In this function,\nnum_choose_arg_maps is read from the message, and a corresponding number\nof crush_choose_arg_maps gets decoded afterwards. Each\ncrush_choose_arg_map has a choose_args_index, which serves as the key\nwhen inserting it into the choose_args rbtree of the decoded crush_map.\nIf a (potentially corrupted) message contains two crush_choose_arg_maps\nwith the same index, the assertion in insert_choose_arg_map() triggers a\nkernel BUG when trying to insert the second crush_choose_arg_map.\n\nThis patch fixes the issue by switching to the non-asserting rbtree\ninsertion function and rejecting the message if the insertion fails.\n\n[ idryomov: changelog ]",
  "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" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-52954"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/0a1265a9ab875f92b6a3ffb497404f46cf9d76a3"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/0b6a3bcb91bc5bfeda39f0df3b71bab62c13e9da"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/4d2b37abda9536808655830d683dc491d31741a8"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/534ebc08df97c47d4c7596f336fa31ecbf91519c"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/80c73bd1b2b04355d1d0c29be8ccbd25a380905d"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/c7bf7864e2924fa5508ac270b0e9364bc13d5a6c"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/d289478cfc0bcf81c7914200d6abdcb78bd04ded"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/f47430fc1f815e87406e2d3b4e476eff1bc7fd9b"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-20", "CWE-617" ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-06-24T17:17:05Z"
  }
}