CVE-2026-25700: Apache Answer AdminToken Not Invalidated After Admin Vulnerability

HIGH
Advisory Identifier: GHSA-4gw2-vg4x-7p29
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CVSS 7.2
CWE-1259
Published
Advisory Summary

CVE-2026-25700 is a HIGH (CVSS 7.2) admintoken not invalidated after admin vulnerability (CWE-1259: Improper Restriction of Security Token Assignment) affecting Apache Answer libraries in the Go ecosystem. The issue involves admintoken not invalidated after admin deactivation. Remediation is available by upgrading affected packages to version 2.0.1.

CVE-2026-25700 at a Glance

CVE Identifier CVE-2026-25700
GHSA Identifier GHSA-4gw2-vg4x-7p29
Severity HIGH
CVSS v3.1 Base Score 7.2
CWE Classification CWE-1259: Improper Restriction of Security Token Assignment
Affected Product Apache Answer
Package Ecosystem Go
Published Date
Last Updated

Security Impact

CVSS: 7.2

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

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required High (PR:H)
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-2026-25700

To remediate this vulnerability, upgrade all affected Apache Answer dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

github.com/apache/incubator-answer fixed: 2.0.1 
Upgrade github.com/apache/incubator-answer to 2.0.1
github.com/apache/answer fixed: 2.0.1 
Upgrade github.com/apache/answer to 2.0.1
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for github.com/apache/incubator-answer

How to Check if You Are Affected

To determine whether your application is affected by CVE-2026-25700, inspect your project dependencies for Apache Answer:

inspect dependencies for github.com/apache/incubator-answer

Analyze the terminal output to locate any version of Apache Answer in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.0.1), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-1259: Improper Restriction of Security Token Assignment, where the system-on-a-chip (soc) implements a security token mechanism to differentiate what actions are allowed or disallowed when a transaction originates from an entity. however, the security tokens are improperly protected. In Apache Answer, 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

Improper Restriction of Security Token Assignment vulnerability in Apache Answer. This issue affects Apache Answer: through 2.0.0. Previously issued administrative tokens were not invalidated after an administrator account was suspended, deleted, or deactivated, allowing continued access to administrative APIs until the token expired. Users are recommended to upgrade to version 2.0.1, which fixes the issue.

CVE-2026-25700 Affected Apache Answer Versions

2 component(s)
Fixed Versions:
2.0.1
Product / Package Ecosystem Affected Versions Fixed Version
github.com/apache/incubator-answer
golang/github.com/apache/incubator-answer
Go
< 2.0.1
2.0.1
github.com/apache/answer
golang/github.com/apache/answer
Go
< 2.0.1
2.0.1

References

NVD — CVE-2026-25700 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-25700
Apache Answer Source Repository REPOSITORY
https://github.com/apache/answer
Apache Answer Release RELEASE
https://github.com/apache/answer/releases/tag/v2.0.1
lists.apache.org/thread/ftw52mlxknjm... WEB
https://lists.apache.org/thread/ftw52mlxknjm29vo1mnqovj53z2kh96y
Apache Answer Security Information SECURITY
http://www.openwall.com/lists/oss-security/2026/06/10/10

Frequently Asked Questions

What is CVE-2026-25700?
CVE-2026-25700 is a security vulnerability in Apache Answer involving AdminToken not invalidated after admin deactivation under CWE-1259: Improper Restriction of Security Token Assignment.
Which Apache Answer versions are affected?
Affected versions include releases prior to 2.0.1 across affected packages: github.com/apache/incubator-answer, github.com/apache/answer.
What version fixes CVE-2026-25700?
Upgrading to 2.0.1 (or the latest patched release for your respective branch) resolves the vulnerability.
Is github.com/apache/incubator-answer affected?
Yes, github.com/apache/incubator-answer is affected in releases prior to 2.0.1. Upgrade your dependency to 2.0.1 or later.
Is github.com/apache/answer affected?
Yes, github.com/apache/answer is affected in releases prior to 2.0.1. Upgrade your dependency to 2.0.1 or later.
What is the CVSS score of CVE-2026-25700?
CVE-2026-25700 has a CVSS v3.1 base score of 7.2 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2026-25700?
CVE-2026-25700 is classified under CWE-1259: Improper Restriction of Security Token Assignment (The System-On-A-Chip (SoC) implements a Security Token mechanism to differentiate what actions are allowed or disallowed when a transaction originates from an entity. However, the Security Tokens are improperly protected.).
How can I check Go dependencies for CVE-2026-25700?
Run the dependency tree command: 'inspect dependencies for github.com/apache/incubator-answer'. 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-4gw2-vg4x-7p29",
  "modified" : "2026-08-17T21:53:44Z",
  "published" : "2026-06-10T18:31:45Z",
  "aliases" : [ "CVE-2026-25700" ],
  "summary" : "Apache Answer: AdminToken not invalidated after admin deactivation",
  "details" : "Improper Restriction of Security Token Assignment vulnerability in Apache Answer.\n\nThis issue affects Apache Answer: through 2.0.0.\n\nPreviously issued administrative tokens were not invalidated after an administrator account was suspended, deleted, or deactivated, allowing continued access to administrative APIs until the token expired.\nUsers are recommended to upgrade to version 2.0.1, which fixes the issue.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/apache/incubator-answer"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2.0.1"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 1.4.2-RC1"
    }
  }, {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/apache/answer"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2.0.1"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 1.7.1"
    }
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-25700"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/apache/answer"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/apache/answer/releases/tag/v2.0.1"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread/ftw52mlxknjm29vo1mnqovj53z2kh96y"
  }, {
    "type" : "WEB",
    "url" : "http://www.openwall.com/lists/oss-security/2026/06/10/10"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-1259" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-08-17T21:53:44Z",
    "nvd_published_at" : "2026-06-10T16:16:58Z"
  }
}