CVE-2026-80558: Software Security Vulnerability Vulnerability

CRITICAL
Advisory Identifier: GHSA-qr98-rr7x-25v7
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CVSS 9.8
Published
Advisory Summary

CVE-2026-80558 is a CRITICAL (CVSS 9.8) security vulnerability vulnerability (General Security Weakness) affecting Software libraries in the Maven ecosystem. Remediation is available in the latest vendor maintenance releases.

CVE-2026-80558 at a Glance

CVE Identifier CVE-2026-80558
GHSA Identifier GHSA-qr98-rr7x-25v7
Severity CRITICAL
CVSS v3.1 Base Score 9.8
CWE Classification General Security Weakness
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 9.8

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:H/I:H/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 High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2026-80558

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-2026-80558, 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

In the Linux kernel, the following vulnerability has been resolved: libceph: Avoid using invalid osd indices from primary_temp A corrupted osdmap received from a Ceph monitor or OSD may contain osd indices in its pg_temp, primary_temp, pg_upmap, and pg_upmap_items parts that don't exist, i.e., that are greater than max_osd or smaller than CEPH_HOMELESS_OSD (-1). These indices are used to create the up and acting set in ceph_pg_to_up_acting_osds(), called from calc_target(). While most of these osd indices are checked, the one from primary_temp is not. Subsequently, this may lead to calc_target() returning this (potentially invalid) index as target osd for a (linger) request. Because the osd_state, osd_weight, and osd_addr arrays only contain max_osd entries (with indices 0 to max_osd -1), this leads to out-of-bounds accesses when trying to read values from these arrays. This patch fixes the issue by adding a check to get_temp_osds(), so that only valid osd indices from primary_temp are used, and it falls back to using the primary from pg_temp or the up set if it is invalid. [ idryomov: changelog ]

References

NVD — CVE-2026-80558 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-80558
git.kernel.org/stable/c/1c705fe8e5... WEB
https://git.kernel.org/stable/c/1c705fe8e59c6b16f48964973fb23c8ec4735b73
git.kernel.org/stable/c/3660b98d12... WEB
https://git.kernel.org/stable/c/3660b98d1204b419f6a77e9a295f148dcf38d042
git.kernel.org/stable/c/4f392fec07... WEB
https://git.kernel.org/stable/c/4f392fec075562dc93bb0c69f37423ca2af9b48f
git.kernel.org/stable/c/505fc50b8f... WEB
https://git.kernel.org/stable/c/505fc50b8ff8e687b7e3ef6866269dea27366224
git.kernel.org/stable/c/6799d4a916... WEB
https://git.kernel.org/stable/c/6799d4a916ffcb3d450d8440f9fe0f0862f768d6
git.kernel.org/stable/c/dfe1877d35... WEB
https://git.kernel.org/stable/c/dfe1877d351b99eb1b1a62a3fc2d174220e88e20
git.kernel.org/stable/c/e009c5f0ad... WEB
https://git.kernel.org/stable/c/e009c5f0ad634c62f5c48a41f1f3c019ecf52555
git.kernel.org/stable/c/e2ffeec852... WEB
https://git.kernel.org/stable/c/e2ffeec85201b2bb748e99e12539ee1b92f62796

Frequently Asked Questions

What is CVE-2026-80558?
CVE-2026-80558 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-2026-80558?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-80558?
CVE-2026-80558 has a CVSS v3.1 base score of 9.8 (CRITICAL) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2026-80558?
CVE-2026-80558 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-80558?
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-qr98-rr7x-25v7",
  "modified" : "2026-08-27T06:31:32Z",
  "published" : "2026-08-27T06:31:32Z",
  "aliases" : [ "CVE-2026-80558" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nlibceph: Avoid using invalid osd indices from primary_temp\n\nA corrupted osdmap received from a Ceph monitor or OSD may contain osd\nindices in its pg_temp, primary_temp, pg_upmap, and pg_upmap_items parts\nthat don't exist, i.e., that are greater than max_osd or smaller than\nCEPH_HOMELESS_OSD (-1). These indices are used to create the up and\nacting set in ceph_pg_to_up_acting_osds(), called from calc_target().\nWhile most of these osd indices are checked, the one from primary_temp\nis not. Subsequently, this may lead to calc_target() returning this\n(potentially invalid) index as target osd for a (linger) request.\nBecause the osd_state, osd_weight, and osd_addr arrays only contain\nmax_osd entries (with indices 0 to max_osd -1), this leads to\nout-of-bounds accesses when trying to read values from these arrays.\n\nThis patch fixes the issue by adding a check to get_temp_osds(), so that\nonly valid osd indices from primary_temp are used, and it falls back to\nusing the primary from pg_temp or the up set if it is invalid.\n\n[ idryomov: changelog ]",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-80558"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/1c705fe8e59c6b16f48964973fb23c8ec4735b73"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/3660b98d1204b419f6a77e9a295f148dcf38d042"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/4f392fec075562dc93bb0c69f37423ca2af9b48f"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/505fc50b8ff8e687b7e3ef6866269dea27366224"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/6799d4a916ffcb3d450d8440f9fe0f0862f768d6"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/dfe1877d351b99eb1b1a62a3fc2d174220e88e20"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/e009c5f0ad634c62f5c48a41f1f3c019ecf52555"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/e2ffeec85201b2bb748e99e12539ee1b92f62796"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "CRITICAL",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-08-26T15:17:10Z"
  }
}