CVE-2026-89478: Software Security Vulnerability Vulnerability

CRITICAL
Advisory Identifier: GHSA-47r2-m88p-rgjm
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CVSS 9.8
Published
Advisory Summary

CVE-2026-89478 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-2026-89478 at a Glance

CVE Identifier CVE-2026-89478
GHSA Identifier GHSA-47r2-m88p-rgjm
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-2026-89478

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-2026-89478, 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: sctp: drop a chunk if its transport was removed sctp_rcv() resolves the transport once per packet and leaves it in chunk->transport. The lookup reference, or the one sctp_add_backlog() takes if the socket is owned by userspace, keeps it around until the chunk has been processed. An authenticated ASCONF DEL-IP can remove it in the meantime. sctp_assoc_rm_peer() takes the transport out of the association and calls sctp_transport_free(), which tags it dead and drops the reference the association held. There is a window on both paths: the packet can sit on the socket backlog, and on the direct path the lookup completes before bh_lock_sock(). The DATA chunk in that packet puts the removed transport back into asoc->peer.last_data_from. Once the packet is done that reference goes away and the transport is freed by RCU, so the next delayed SACK carries the pointer into the SACK chunk and sctp_outq_select_transport() reads the freed transport's state. Drop the chunk in sctp_inq_push(), next to the existing rcvr->dead check. Both paths reach it with the association's socket lock held. The peer retransmits it.

References

NVD — CVE-2026-89478 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-89478
git.kernel.org/stable/c/03a9d10ecf... WEB
https://git.kernel.org/stable/c/03a9d10ecf71f54b2af8020935f2033d4a132be5
git.kernel.org/stable/c/0422b092a3... WEB
https://git.kernel.org/stable/c/0422b092a3d43ca462932ff9f747731ca078d1d4
git.kernel.org/stable/c/1035bdef1e... WEB
https://git.kernel.org/stable/c/1035bdef1efb9b1076d1a57b81e08c637ff08ecc
git.kernel.org/stable/c/3537961df2... WEB
https://git.kernel.org/stable/c/3537961df2163258bddc230db0e18dc14e925ea6
git.kernel.org/stable/c/3fc072e7cb... WEB
https://git.kernel.org/stable/c/3fc072e7cb4a0ff251d13cfc2d24f62489cd9386
git.kernel.org/stable/c/928fd7920b... WEB
https://git.kernel.org/stable/c/928fd7920ba37cc5637a211b9be979083413a2fa
git.kernel.org/stable/c/c6c86a5e62... WEB
https://git.kernel.org/stable/c/c6c86a5e62a4fec36692ddd64b9144b660f71f96
git.kernel.org/stable/c/d7cb5ad832... WEB
https://git.kernel.org/stable/c/d7cb5ad832095dc4becfdb2a36007ffd50e49fb0

Frequently Asked Questions

What is CVE-2026-89478?
CVE-2026-89478 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-2026-89478?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-89478?
CVE-2026-89478 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-2026-89478?
CVE-2026-89478 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-89478?
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-47r2-m88p-rgjm",
  "modified" : "2026-09-14T15:32:26Z",
  "published" : "2026-09-11T21:31:28Z",
  "aliases" : [ "CVE-2026-89478" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nsctp: drop a chunk if its transport was removed\n\nsctp_rcv() resolves the transport once per packet and leaves it in\nchunk->transport. The lookup reference, or the one sctp_add_backlog() takes\nif the socket is owned by userspace, keeps it around until the chunk has\nbeen processed.\n\nAn authenticated ASCONF DEL-IP can remove it in the meantime.\nsctp_assoc_rm_peer() takes the transport out of the association and calls\nsctp_transport_free(), which tags it dead and drops the reference the\nassociation held. There is a window on both paths: the packet can sit on\nthe socket backlog, and on the direct path the lookup completes before\nbh_lock_sock().\n\nThe DATA chunk in that packet puts the removed transport back into\nasoc->peer.last_data_from. Once the packet is done that reference goes\naway and the transport is freed by RCU, so the next delayed SACK carries\nthe pointer into the SACK chunk and sctp_outq_select_transport() reads the\nfreed transport's state.\n\nDrop the chunk in sctp_inq_push(), next to the existing rcvr->dead check.\nBoth paths reach it with the association's socket lock held. The peer\nretransmits it.",
  "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-2026-89478"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/03a9d10ecf71f54b2af8020935f2033d4a132be5"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/0422b092a3d43ca462932ff9f747731ca078d1d4"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/1035bdef1efb9b1076d1a57b81e08c637ff08ecc"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/3537961df2163258bddc230db0e18dc14e925ea6"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/3fc072e7cb4a0ff251d13cfc2d24f62489cd9386"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/928fd7920ba37cc5637a211b9be979083413a2fa"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/c6c86a5e62a4fec36692ddd64b9144b660f71f96"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/d7cb5ad832095dc4becfdb2a36007ffd50e49fb0"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "CRITICAL",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-11T20:19:29Z"
  }
}