CVE-2015-8756: Typo3/cms Cross-Site Scripting Vulnerability

MODERATE
Advisory Identifier: GHSA-xx7m-8rq2-cw2v
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CVSS 5.4
CWE-79
Published
Advisory Summary

CVE-2015-8756 is a MODERATE (CVSS 5.4) cross-site scripting vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting Typo3/cms libraries in the Packagist ecosystem. The issue involves typo3 cms indexed search cross-site scripting vulnerability. Remediation is available by upgrading affected packages to version 6.2.16.

CVE-2015-8756 at a Glance

CVE Identifier CVE-2015-8756
GHSA Identifier GHSA-xx7m-8rq2-cw2v
Severity MODERATE
CVSS v3.1 Base Score 5.4
CWE Classification CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Product Typo3/cms
Package Ecosystem Packagist
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:3.0/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-2015-8756

To remediate this vulnerability, upgrade all affected Typo3/cms dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

typo3/cms fixed: 6.2.16 
Upgrade typo3/cms to 6.2.16
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 typo3/cms

How to Check if You Are Affected

To determine whether your application is affected by CVE-2015-8756, inspect your project dependencies for Typo3/cms:

inspect dependencies for typo3/cms

Analyze the terminal output to locate any version of Typo3/cms in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 6.2.16), 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-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'), where the product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. In Typo3/cms, 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

Cross-site scripting (XSS) vulnerability in the search result view in the Indexed Search (indexed_search) component in TYPO3 6.2.x before 6.2.16 allows remote authenticated editors to inject arbitrary web script or HTML via unspecified vectors.

CVE-2015-8756 Affected Typo3/cms Versions

1 component(s)
Fixed Versions:
6.2.16
Product / Package Ecosystem Affected Versions Fixed Version
typo3/cms
 Packagist
≥ 6.2.0
< 6.2.16
6.2.16

References

NVD — CVE-2015-8756 NVD
https://nvd.nist.gov/vuln/detail/CVE-2015-8756
Security Fix Commit FIX COMMIT
https://github.com/TYPO3/typo3/commit/7e4bdf48988191043a65880c72190c4130c1f0e0
Typo3/cms Source Repository REPOSITORY
https://github.com/TYPO3-CMS/indexed_search
Typo3/cms Security Information SECURITY
https://typo3.org/security/advisory/typo3-core-sa-2015-015
Typo3/cms Security Information SECURITY
https://web.archive.org/web/20160624215319/http://www.securitytracker.com/id/1034486

Frequently Asked Questions

What is CVE-2015-8756?
CVE-2015-8756 is a security vulnerability in Typo3/cms involving TYPO3 CMS indexed search Cross-site Scripting vulnerability under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').
Which Typo3/cms versions are affected?
Affected versions include releases prior to 6.2.16 across affected packages: typo3/cms.
What version fixes CVE-2015-8756?
Upgrading to 6.2.16 (or the latest patched release for your respective branch) resolves the vulnerability.
Is typo3/cms affected?
Yes, typo3/cms is affected in releases prior to 6.2.16. Upgrade your dependency to 6.2.16 or later.
What is the CVSS score of CVE-2015-8756?
CVE-2015-8756 has a CVSS v3.1 base score of 5.4 (MODERATE) with vector string CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.
What CWE is associated with CVE-2015-8756?
CVE-2015-8756 is classified under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.).
How can I check Packagist dependencies for CVE-2015-8756?
Run the dependency tree command: 'inspect dependencies for typo3/cms'. 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-xx7m-8rq2-cw2v",
  "modified" : "2025-04-14T20:04:14Z",
  "published" : "2022-05-17T03:59:52Z",
  "aliases" : [ "CVE-2015-8756" ],
  "summary" : "TYPO3 CMS indexed search Cross-site Scripting vulnerability",
  "details" : "Cross-site scripting (XSS) vulnerability in the search result view in the Indexed Search (indexed_search) component in TYPO3 6.2.x before 6.2.16 allows remote authenticated editors to inject arbitrary web script or HTML via unspecified vectors.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "typo3/cms"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "6.2.0"
      }, {
        "fixed" : "6.2.16"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2015-8756"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/TYPO3/typo3/commit/7e4bdf48988191043a65880c72190c4130c1f0e0"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/TYPO3-CMS/indexed_search"
  }, {
    "type" : "WEB",
    "url" : "https://typo3.org/security/advisory/typo3-core-sa-2015-015"
  }, {
    "type" : "WEB",
    "url" : "https://web.archive.org/web/20160624215319/http://www.securitytracker.com/id/1034486"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2025-04-14T20:04:14Z",
    "nvd_published_at" : "2016-01-08T19:59:00Z"
  }
}