CVE-2025-31687: Drupal/spamspan Cross-Site Scripting Vulnerability

LOW
Advisory Identifier: GHSA-8r2q-865v-wm8j
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CVSS 6.1
CWE-79
Published
Advisory Summary

CVE-2025-31687 is a LOW (CVSS 6.1) cross-site scripting vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting Drupal/spamspan libraries in the Packagist ecosystem. The issue involves drupal spamspan cross-site scripting (xss) vulnerability. Remediation is available by upgrading affected packages to version 3.2.1.

CVE-2025-31687 at a Glance

CVE Identifier CVE-2025-31687
GHSA Identifier GHSA-8r2q-865v-wm8j
Severity LOW
CVSS v3.1 Base Score 6.1
CWE Classification CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Product Drupal/spamspan
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 6.1

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

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
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-2025-31687

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

drupal/spamspan fixed: 3.2.1 
Upgrade drupal/spamspan to 3.2.1
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 drupal/spamspan

How to Check if You Are Affected

To determine whether your application is affected by CVE-2025-31687, inspect your project dependencies for Drupal/spamspan:

inspect dependencies for drupal/spamspan

Analyze the terminal output to locate any version of Drupal/spamspan in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 3.2.1), 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-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 Drupal/spamspan, 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 Input During Web Page Generation ('Cross-site Scripting') vulnerability in Drupal SpamSpan filter allows Cross-Site Scripting (XSS). This issue affects SpamSpan filter: from 0.0.0 before 3.2.1.

CVE-2025-31687 Affected Drupal/spamspan Versions

1 component(s)
Fixed Versions:
3.2.1
Product / Package Ecosystem Affected Versions Fixed Version
drupal/spamspan
 Packagist
< 3.2.1
3.2.1

References

NVD — CVE-2025-31687 NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-31687
git.drupalcode.org/project/spamspan PACKAGE
https://git.drupalcode.org/project/spamspan
git.drupalcode.org/project/spamspan/-/... WEB
https://git.drupalcode.org/project/spamspan/-/commit/90d622211c8bb316080a3af1dcf253b0d7e90791
www.drupal.org/sa-contrib-2025-016 WEB
https://www.drupal.org/sa-contrib-2025-016

Frequently Asked Questions

What is CVE-2025-31687?
CVE-2025-31687 is a security vulnerability in Drupal/spamspan involving Drupal SpamSpan Cross-Site Scripting (XSS) vulnerability under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').
Which Drupal/spamspan versions are affected?
Affected versions include releases prior to 3.2.1 across affected packages: drupal/spamspan.
What version fixes CVE-2025-31687?
Upgrading to 3.2.1 (or the latest patched release for your respective branch) resolves the vulnerability.
Is drupal/spamspan affected?
Yes, drupal/spamspan is affected in releases prior to 3.2.1. Upgrade your dependency to 3.2.1 or later.
What is the CVSS score of CVE-2025-31687?
CVE-2025-31687 has a CVSS v3.1 base score of 6.1 (LOW) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
What CWE is associated with CVE-2025-31687?
CVE-2025-31687 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-2025-31687?
Run the dependency tree command: 'inspect dependencies for drupal/spamspan'. 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-8r2q-865v-wm8j",
  "modified" : "2025-04-29T20:23:12Z",
  "published" : "2025-04-01T00:30:34Z",
  "aliases" : [ "CVE-2025-31687" ],
  "summary" : "Drupal SpamSpan Cross-Site Scripting (XSS) vulnerability",
  "details" : "Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Drupal SpamSpan filter allows Cross-Site Scripting (XSS). This issue affects SpamSpan filter: from 0.0.0 before 3.2.1.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"
  }, {
    "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" : "drupal/spamspan"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "3.2.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-31687"
  }, {
    "type" : "PACKAGE",
    "url" : "https://git.drupalcode.org/project/spamspan"
  }, {
    "type" : "WEB",
    "url" : "https://git.drupalcode.org/project/spamspan/-/commit/90d622211c8bb316080a3af1dcf253b0d7e90791"
  }, {
    "type" : "WEB",
    "url" : "https://www.drupal.org/sa-contrib-2025-016"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "LOW",
    "github_reviewed" : true,
    "github_reviewed_at" : "2025-04-02T17:12:06Z",
    "nvd_published_at" : "2025-03-31T22:15:21Z"
  }
}