CVE-2026-53871: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-cpcp-57xw-48rv
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CVSS 8.1
CWE-565
Published
Advisory Summary

CVE-2026-53871 is a HIGH (CVSS 8.1) security vulnerability vulnerability (CWE-565: Reliance on Cookies without Validation and Integrity Checking) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product relies on the existence or values of cookies when performing security-critical operations, but it does not properly ensure that the setting is valid for the associated user.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-53871 at a Glance

CVE Identifier CVE-2026-53871
GHSA Identifier GHSA-cpcp-57xw-48rv
Severity HIGH
CVSS v3.1 Base Score 8.1
CWE Classification CWE-565: Reliance on Cookies without Validation and Integrity Checking
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 8.1

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity High (I:H)
Availability None (A:N)

How to Fix CVE-2026-53871

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-2026-53871, 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-565: Reliance on Cookies without Validation and Integrity Checking, where the product relies on the existence or values of cookies when performing security-critical operations, but it does not properly ensure that the setting is valid for the associated user. 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

Hermes WebUI before 0.51.368 contains an authorization bypass vulnerability in the get_profile_cookie() function that accepts unauthenticated profile names from the hermes_profile cookie. An authenticated attacker can forge the hermes_profile cookie value to bypass profile-scoped authorization checks and access sessions, files, and resources across different profiles.

References

NVD — CVE-2026-53871 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-53871
Software Source Repository REPOSITORY
https://github.com/nesquena/hermes-webui/pull/4023
Software Source Repository REPOSITORY
https://github.com/nesquena/hermes-webui/pull/4036
Security Fix Commit FIX COMMIT
https://github.com/nesquena/hermes-webui/commit/9e96f5f6adf93b6d1e27ebddfb4d2833ca06ff3b
Software Release RELEASE
https://github.com/nesquena/hermes-webui/releases/tag/v0.51.368
www.vulncheck.com/advisories/hermes-w... WEB
https://www.vulncheck.com/advisories/hermes-webui-profile-scoped-authorization-bypass-via-forged-hermes-profile-cookie

Frequently Asked Questions

What is CVE-2026-53871?
CVE-2026-53871 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-565: Reliance on Cookies without Validation and Integrity Checking.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-53871?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-53871?
CVE-2026-53871 has a CVSS v3.1 base score of 8.1 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.
What CWE is associated with CVE-2026-53871?
CVE-2026-53871 is classified under CWE-565: Reliance on Cookies without Validation and Integrity Checking (The product relies on the existence or values of cookies when performing security-critical operations, but it does not properly ensure that the setting is valid for the associated user.).
How can I check Maven dependencies for CVE-2026-53871?
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-cpcp-57xw-48rv",
  "modified" : "2026-06-17T21:34:38Z",
  "published" : "2026-06-17T21:34:38Z",
  "aliases" : [ "CVE-2026-53871" ],
  "details" : "Hermes WebUI before 0.51.368 contains an authorization bypass vulnerability in the get_profile_cookie() function that accepts unauthenticated profile names from the hermes_profile cookie. An authenticated attacker can forge the hermes_profile cookie value to bypass profile-scoped authorization checks and access sessions, files, and resources across different profiles.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/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-2026-53871"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/nesquena/hermes-webui/pull/4023"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/nesquena/hermes-webui/pull/4036"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/nesquena/hermes-webui/commit/9e96f5f6adf93b6d1e27ebddfb4d2833ca06ff3b"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/nesquena/hermes-webui/releases/tag/v0.51.368"
  }, {
    "type" : "WEB",
    "url" : "https://www.vulncheck.com/advisories/hermes-webui-profile-scoped-authorization-bypass-via-forged-hermes-profile-cookie"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-565" ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-06-17T19:18:11Z"
  }
}