CVE-2026-90011: Software Security Vulnerability Vulnerability

CRITICAL
Advisory Identifier: GHSA-m4f8-5753-34xg
Share
CVSS 9.1
Published
Advisory Summary

CVE-2026-90011 is a CRITICAL (CVSS 9.1) security vulnerability vulnerability (General Security Weakness) affecting Software libraries in the Maven ecosystem. Remediation is available in the latest vendor maintenance releases.

CVE-2026-90011 at a Glance

CVE Identifier CVE-2026-90011
GHSA Identifier GHSA-m4f8-5753-34xg
Severity CRITICAL
CVSS v3.1 Base Score 9.1
CWE Classification General Security Weakness
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 9.1

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: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 High (C:H)
Integrity None (I:N)
Availability High (A:H)

How to Fix CVE-2026-90011

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-2026-90011, 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: scsi: target: iscsi: Reserve a terminator byte for the login payload iscsi_target_check_login_request() rejects a login PDU whose DataSegmentLength exceeds MAX_KEY_VALUE_PAIRS, but the test is '>' and login->req_buf is allocated with exactly MAX_KEY_VALUE_PAIRS bytes. Since iscsit_get_login_rx() receives payload_length + padding bytes, where padding = ((-payload_length) & 3); any payload_length from 8189 to 8192 fills the whole 8192 byte buffer. The write stays in bounds, but no byte is left for a NUL terminator. The buffer is subsequently consumed as a C string. In the CHAP path chap_check_algorithm() calls kstrdup(a_str), and extract_param() calls strstr(in_buf, pattern) followed by strlen_semi(), none of which take a length. convert_null_to_semi() additionally rewrites every embedded NUL to ';', so even a payload made of well formed NUL separated key=value records is left without a terminator. These walk past the end of the object into adjacent slab memory. It is reachable by an unauthenticated initiator against a portal configured for CHAP; when authentication is not required iscsi_login_zero_tsih_s2() rewrites AuthMethod to None and the CHAP path is never entered. Allocate one extra byte. kzalloc() zeroes it and nothing ever writes to it, as every writer copies to offset 0 for at most MAX_KEY_VALUE_PAIRS bytes, so the buffer is always terminated.

References

NVD — CVE-2026-90011 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-90011
git.kernel.org/stable/c/1624bff4c5... WEB
https://git.kernel.org/stable/c/1624bff4c5118ad494d50ad94d44f22064667a7f
git.kernel.org/stable/c/3ddf3ea291... WEB
https://git.kernel.org/stable/c/3ddf3ea291a0ef2ea93b82e158960ac2cc42302b
git.kernel.org/stable/c/5fac79f248... WEB
https://git.kernel.org/stable/c/5fac79f248c37774d1dd761406f83d25ca6ff8e4
git.kernel.org/stable/c/6b589ef9d5... WEB
https://git.kernel.org/stable/c/6b589ef9d5f6cdc70d2b4f269ca6cf26b5ebb076
git.kernel.org/stable/c/6ddddcad43... WEB
https://git.kernel.org/stable/c/6ddddcad436d8e6e619204d3c848147ff2f5bf1e
git.kernel.org/stable/c/b19dc17ed9... WEB
https://git.kernel.org/stable/c/b19dc17ed963ac36c0db4b52a1803fb11169f91f
git.kernel.org/stable/c/eb9dadf4d5... WEB
https://git.kernel.org/stable/c/eb9dadf4d552ebe10644871c5189286552aa48f5
git.kernel.org/stable/c/f4825922d2... WEB
https://git.kernel.org/stable/c/f4825922d2fb371e2b969697d792077f1b62b62c

Frequently Asked Questions

What is CVE-2026-90011?
CVE-2026-90011 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-2026-90011?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-90011?
CVE-2026-90011 has a CVSS v3.1 base score of 9.1 (CRITICAL) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H.
What CWE is associated with CVE-2026-90011?
CVE-2026-90011 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-90011?
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-m4f8-5753-34xg",
  "modified" : "2026-09-16T15:31:06Z",
  "published" : "2026-09-16T12:30:45Z",
  "aliases" : [ "CVE-2026-90011" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: target: iscsi: Reserve a terminator byte for the login payload\n\niscsi_target_check_login_request() rejects a login PDU whose\nDataSegmentLength exceeds MAX_KEY_VALUE_PAIRS, but the test is '>' and\nlogin->req_buf is allocated with exactly MAX_KEY_VALUE_PAIRS\nbytes. Since iscsit_get_login_rx() receives payload_length + padding\nbytes, where\n\n\tpadding = ((-payload_length) & 3);\n\nany payload_length from 8189 to 8192 fills the whole 8192 byte\nbuffer. The write stays in bounds, but no byte is left for a NUL\nterminator.\n\nThe buffer is subsequently consumed as a C string. In the CHAP path\nchap_check_algorithm() calls kstrdup(a_str), and extract_param() calls\nstrstr(in_buf, pattern) followed by strlen_semi(), none of which take a\nlength. convert_null_to_semi() additionally rewrites every embedded NUL\nto ';', so even a payload made of well formed NUL separated key=value\nrecords is left without a terminator. These walk past the end of the\nobject into adjacent slab memory. It is reachable by an unauthenticated\ninitiator against a portal configured for CHAP; when authentication is\nnot required iscsi_login_zero_tsih_s2() rewrites AuthMethod to None and\nthe CHAP path is never entered.\n\nAllocate one extra byte. kzalloc() zeroes it and nothing ever writes to\nit, as every writer copies to offset 0 for at most MAX_KEY_VALUE_PAIRS\nbytes, so the buffer is always terminated.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-90011"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/1624bff4c5118ad494d50ad94d44f22064667a7f"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/3ddf3ea291a0ef2ea93b82e158960ac2cc42302b"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/5fac79f248c37774d1dd761406f83d25ca6ff8e4"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/6b589ef9d5f6cdc70d2b4f269ca6cf26b5ebb076"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/6ddddcad436d8e6e619204d3c848147ff2f5bf1e"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/b19dc17ed963ac36c0db4b52a1803fb11169f91f"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/eb9dadf4d552ebe10644871c5189286552aa48f5"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/f4825922d2fb371e2b969697d792077f1b62b62c"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "CRITICAL",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-16T11:17:13Z"
  }
}