CVE-2012-5888: B13/seo basics Cross-Site Scripting Vulnerability

LOW
Advisory Identifier: GHSA-7p53-8wjr-j8h4
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CWE-79
Published
Advisory Summary

CVE-2012-5888 is a LOW cross-site scripting vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting B13/seo basics libraries in the Packagist ecosystem. The issue involves basic seo features (seo_basics) extension typo3 vulnerable to cross-site scripting. Remediation is available by upgrading affected packages to version 0.8.2.

CVE-2012-5888 at a Glance

CVE Identifier CVE-2012-5888
GHSA Identifier GHSA-7p53-8wjr-j8h4
Severity LOW
CVSS v3.1 Base Score N/A
CWE Classification CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Product B13/seo basics
Package Ecosystem Packagist
Published Date
Last Updated

How to Fix CVE-2012-5888

To remediate this vulnerability, upgrade all affected B13/seo basics dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

b13/seo_basics fixed: 0.8.2 
Upgrade b13/seo_basics to 0.8.2
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 b13/seo_basics

How to Check if You Are Affected

To determine whether your application is affected by CVE-2012-5888, inspect your project dependencies for B13/seo basics:

inspect dependencies for b13/seo_basics

Analyze the terminal output to locate any version of B13/seo basics in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.8.2), 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 B13/seo basics, 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 Basic SEO Features (seo_basics) extension before 0.8.2 for TYPO3 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.

CVE-2012-5888 Affected B13/seo basics Versions

1 component(s)
Fixed Versions:
0.8.2
Product / Package Ecosystem Affected Versions Fixed Version
b13/seo_basics
 Packagist
< 0.8.2
0.8.2

References

NVD — CVE-2012-5888 NVD
https://nvd.nist.gov/vuln/detail/CVE-2012-5888
exchange.xforce.ibmcloud.com/vulnerabilities/744... WEB
https://exchange.xforce.ibmcloud.com/vulnerabilities/74483
B13/seo basics Source Repository REPOSITORY
https://github.com/b13/t3ext-seo_basics
B13/seo basics Security Information SECURITY
https://web.archive.org/web/20120709063251/http://www.securityfocus.com/bid/52772
B13/seo basics Security Information SECURITY
https://web.archive.org/web/20120711210745/http://typo3.org/teams/security/security-bulletins/typo3-extensions/typo3-ext-sa-2012-006
forge.typo3.org/issues/35532 WEB
http://forge.typo3.org/issues/35532

Frequently Asked Questions

What is CVE-2012-5888?
CVE-2012-5888 is a security vulnerability in B13/seo basics involving Basic SEO Features (seo_basics) extension TYPO3 vulnerable to Cross-site Scripting under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').
Which B13/seo basics versions are affected?
Affected versions include releases prior to 0.8.2 across affected packages: b13/seo_basics.
What version fixes CVE-2012-5888?
Upgrading to 0.8.2 (or the latest patched release for your respective branch) resolves the vulnerability.
Is b13/seo_basics affected?
Yes, b13/seo_basics is affected in releases prior to 0.8.2. Upgrade your dependency to 0.8.2 or later.
What CWE is associated with CVE-2012-5888?
CVE-2012-5888 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-2012-5888?
Run the dependency tree command: 'inspect dependencies for b13/seo_basics'. 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-7p53-8wjr-j8h4",
  "modified" : "2025-04-12T03:10:59Z",
  "published" : "2022-05-17T01:38:30Z",
  "aliases" : [ "CVE-2012-5888" ],
  "summary" : "Basic SEO Features (seo_basics) extension TYPO3 vulnerable to Cross-site Scripting",
  "details" : "Cross-site scripting (XSS) vulnerability in Basic SEO Features (seo_basics) extension before 0.8.2 for TYPO3 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "b13/seo_basics"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.8.2"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2012-5888"
  }, {
    "type" : "WEB",
    "url" : "https://exchange.xforce.ibmcloud.com/vulnerabilities/74483"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/b13/t3ext-seo_basics"
  }, {
    "type" : "WEB",
    "url" : "https://web.archive.org/web/20120709063251/http://www.securityfocus.com/bid/52772"
  }, {
    "type" : "WEB",
    "url" : "https://web.archive.org/web/20120711210745/http://typo3.org/teams/security/security-bulletins/typo3-extensions/typo3-ext-sa-2012-006"
  }, {
    "type" : "WEB",
    "url" : "http://forge.typo3.org/issues/35532"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "LOW",
    "github_reviewed" : true,
    "github_reviewed_at" : "2025-04-12T03:10:59Z",
    "nvd_published_at" : "2012-11-17T21:55:00Z"
  }
}