CVE-2026-34033: Github.com/apache/incubator answer Cross-Site Scripting Vulnerability

MODERATE
Advisory Identifier: GHSA-6qwm-5fm9-cvjx
Share
CVSS 5.4
CWE-80 CWE-79
Published
Advisory Summary

CVE-2026-34033 is a MODERATE (CVSS 5.4) cross-site scripting vulnerability (CWE-80: Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)) affecting Github.com/apache/incubator answer libraries in the Go ecosystem. The issue involves apache answer vulnerable to cross-site scripting. Remediation is available by upgrading affected packages to version 1.7.2-0.20260509080709-d1a4092c61cc.

CVE-2026-34033 at a Glance

CVE Identifier CVE-2026-34033
GHSA Identifier GHSA-6qwm-5fm9-cvjx
Severity MODERATE
CVSS v3.1 Base Score 5.4
CWE Classification CWE-80: Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)
Affected Product Github.com/apache/incubator answer
Package Ecosystem Go
Published Date
Last Updated

Security Impact

CVSS: 5.4

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:R/S:C/C:L/I:L/A:N).

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

How to Fix CVE-2026-34033

To remediate this vulnerability, upgrade all affected Github.com/apache/incubator 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: 1.7.2-0.20260509080709-d1a4092c61cc 
Upgrade github.com/apache/incubator-answer to 1.7.2-0.20260509080709-d1a4092c61cc
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-2026-34033, inspect your project dependencies for Github.com/apache/incubator answer:

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

Analyze the terminal output to locate any version of Github.com/apache/incubator answer in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.7.2-0.20260509080709-d1a4092c61cc), 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-80: Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS), where the product receives input from an upstream component, but it does not neutralize or incorrectly neutralizes special characters such as "<", ">", and "&" that could be interpreted as web-scripting elements when they are sent to a downstream component that processes web pages. In Github.com/apache/incubator 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 Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in Apache Answer. This issue affects Apache Answer: through 2.0.0. User-supplied content was included in notification emails without proper escaping, allowing authenticated users to inject arbitrary HTML into emails sent to other users. Users are recommended to upgrade to version 2.0.1, which fixes the issue.

CVE-2026-34033 Affected Github.com/apache/incubator answer Versions

1 component(s)
Fixed Versions:
1.7.2-0.20260509080709-d1a4092c61cc
Product / Package Ecosystem Affected Versions Fixed Version
github.com/apache/incubator-answer
golang/github.com/apache/incubator-answer
Go
< 1.7.2-0.20260509080709-d1a4092c61cc
1.7.2-0.20260509080709-d1a4092c61cc

References

NVD — CVE-2026-34033 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-34033
Security Fix Commit FIX COMMIT
https://github.com/apache/answer/commit/d1a4092c61ccd41988d1033fce47eb513adb433e
Github.com/apache/incubator answer Source Repository REPOSITORY
https://github.com/apache/answer
Github.com/apache/incubator answer Release RELEASE
https://github.com/apache/answer/releases/tag/v2.0.1
lists.apache.org/thread/wrfd9blbfotf... WEB
https://lists.apache.org/thread/wrfd9blbfotfg479jr8vlwfx6pwr9sgj
Github.com/apache/incubator answer Security Information SECURITY
http://www.openwall.com/lists/oss-security/2026/06/09/3

Frequently Asked Questions

What is CVE-2026-34033?
CVE-2026-34033 is a security vulnerability in Github.com/apache/incubator answer involving Apache Answer vulnerable to Cross-site Scripting under CWE-80: Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS).
Which Github.com/apache/incubator answer versions are affected?
Affected versions include releases prior to 1.7.2-0.20260509080709-d1a4092c61cc across affected packages: github.com/apache/incubator-answer.
What version fixes CVE-2026-34033?
Upgrading to 1.7.2-0.20260509080709-d1a4092c61cc (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 1.7.2-0.20260509080709-d1a4092c61cc. Upgrade your dependency to 1.7.2-0.20260509080709-d1a4092c61cc or later.
What is the CVSS score of CVE-2026-34033?
CVE-2026-34033 has a CVSS v3.1 base score of 5.4 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.
What CWE is associated with CVE-2026-34033?
CVE-2026-34033 is classified under CWE-80: Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) (The product receives input from an upstream component, but it does not neutralize or incorrectly neutralizes special characters such as "<", ">", and "&" that could be interpreted as web-scripting elements when they are sent to a downstream component that processes web pages.).
How can I check Go dependencies for CVE-2026-34033?
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-6qwm-5fm9-cvjx",
  "modified" : "2026-07-31T15:53:22Z",
  "published" : "2026-06-09T09:32:07Z",
  "aliases" : [ "CVE-2026-34033" ],
  "summary" : "Apache Answer vulnerable to Cross-site Scripting",
  "details" : "Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in Apache Answer.\n\nThis issue affects Apache Answer: through 2.0.0.\n\nUser-supplied content was included in notification emails without proper escaping, allowing authenticated users to inject arbitrary HTML into emails sent to other users.\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:L/UI:R/S:C/C:L/I:L/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/apache/incubator-answer"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.7.2-0.20260509080709-d1a4092c61cc"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-34033"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/apache/answer/commit/d1a4092c61ccd41988d1033fce47eb513adb433e"
  }, {
    "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/wrfd9blbfotfg479jr8vlwfx6pwr9sgj"
  }, {
    "type" : "WEB",
    "url" : "http://www.openwall.com/lists/oss-security/2026/06/09/3"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79", "CWE-80" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-07-31T15:53:22Z",
    "nvd_published_at" : "2026-06-09T09:16:29Z"
  }
}