CVE-2026-75110: Software Security Vulnerability Vulnerability

CRITICAL
Advisory Identifier: GHSA-v9vw-ccqp-q298
Share
CVSS 9.8
CWE-697
Published
Advisory Summary

CVE-2026-75110 is a CRITICAL (CVSS 9.8) security vulnerability vulnerability (CWE-697: Incorrect Comparison) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product compares two entities in a security-relevant context, but the comparison is incorrect.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-75110 at a Glance

CVE Identifier CVE-2026-75110
GHSA Identifier GHSA-v9vw-ccqp-q298
Severity CRITICAL
CVSS v3.1 Base Score 9.8
CWE Classification CWE-697: Incorrect Comparison
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-2026-75110

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-2026-75110, 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-697: Incorrect Comparison, where the product compares two entities in a security-relevant context, but the comparison is incorrect. 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

MemOS is a memory operating system for LLMs and AI agents. In deployments where authentication is enabled (AUTH_ENABLED=true) but the undocumented, defaultless INTERNAL_SERVICE_SECRET environment variable is unset, the is_internal_request() check in src/memos/api/middleware/auth.py fails open: os.getenv("INTERNAL_SERVICE_SECRET") returns None and a request omitting the X-Internal-Service header also yields None, so the comparison None == None evaluates true. The request is then treated as a trusted internal principal and granted scopes: ["all"]. As a result, an unauthenticated remote attacker can reach the admin API-key management endpoints to mint API keys for any user, enumerate keys, revoke keys, and generate a master key for persistent privileged access, as well as all data endpoints.

References

NVD — CVE-2026-75110 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-75110
Software Source Repository REPOSITORY
https://github.com/MemTensor/MemOS/issues/2259
Software Source Repository REPOSITORY
https://github.com/MemTensor/MemOS
Software Source Repository REPOSITORY
https://github.com/MemTensor/MemOS/blob/main/src/memos/api/middleware/auth.py
www.vulncheck.com/advisories/memos-au... WEB
https://www.vulncheck.com/advisories/memos-authentication-bypass-via-unset-internal-service-secret

Frequently Asked Questions

What is CVE-2026-75110?
CVE-2026-75110 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-697: Incorrect Comparison.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-75110?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-75110?
CVE-2026-75110 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-2026-75110?
CVE-2026-75110 is classified under CWE-697: Incorrect Comparison (The product compares two entities in a security-relevant context, but the comparison is incorrect.).
How can I check Maven dependencies for CVE-2026-75110?
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-v9vw-ccqp-q298",
  "modified" : "2026-08-17T21:31:27Z",
  "published" : "2026-08-17T21:31:27Z",
  "aliases" : [ "CVE-2026-75110" ],
  "details" : "MemOS is a memory operating system for LLMs and AI agents. In deployments where authentication is enabled (AUTH_ENABLED=true) but the undocumented, defaultless INTERNAL_SERVICE_SECRET environment variable is unset, the is_internal_request() check in src/memos/api/middleware/auth.py fails open: os.getenv(\"INTERNAL_SERVICE_SECRET\") returns None and a request omitting the X-Internal-Service header also yields None, so the comparison None == None evaluates true. The request is then treated as a trusted internal principal and granted scopes: [\"all\"]. As a result, an unauthenticated remote attacker can reach the admin API-key management endpoints to mint API keys for any user, enumerate keys, revoke keys, and generate a master key for persistent privileged access, as well as all data endpoints.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/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-2026-75110"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/MemTensor/MemOS/issues/2259"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/MemTensor/MemOS"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/MemTensor/MemOS/blob/main/src/memos/api/middleware/auth.py"
  }, {
    "type" : "WEB",
    "url" : "https://www.vulncheck.com/advisories/memos-authentication-bypass-via-unset-internal-service-secret"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-697" ],
    "severity" : "CRITICAL",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-08-17T21:16:50Z"
  }
}