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MEDIUM severity

CVE-2025-31687 — spamspan

MEDIUM

CVE-2025-31687 is a medium-severity (CVSS 6.1) Cross-site Scripting (XSS) vulnerability in drupal/spamspan. A fix is available for drupal/spamspan — see the affected versions and patch details below.

SpamSpan filter - Moderately critical - Cross Site Scripting - SA-CONTRIB-2025-016

Also known asDRUPAL-CONTRIB-2025-016GHSA-8r2q-865v-wm8j
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Nov 8, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

No confirmed exploitation observed yet

  • CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.

Exploitation and automatability from CISA’s SSVC triage for CVE-2025-31687.

EPSS Exploitation Probability

via FIRST.org ↗
0.3%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs18th percentile — riskier than 18% of all scored CVEsHighest risk
0.00%0.30%0.59%0.89%0.4%0.3%May 26Sep 26Nov 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

1 pkg affected
🐘drupal/spamspan

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Packagist packages — download data is not available via public APIs for these ecosystems.

Description

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.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🐘Packagistdrupal/spamspanall versions3.2.1composer require drupal/spamspan:^3.2.1

Affected Products

1 product · 1 configurations
Application
spamspan filterdrowl
< 3.2.1
range

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for drupal/spamspan, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update drupal/spamspan to 3.2.1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2025-31687 is resolved across your whole dependency graph.

  3. Workarounds

    Escape or sanitise the affected output on the server side rather than relying on client-side filtering, and add a Content-Security-Policy that blocks inline script execution so injected markup cannot run even if it reaches the page.

Frequently Asked Questions

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.
O3 Security · Impact-Aware SCA

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CVE-2025-31687: spamspan XSS — Fixed in 3.2.1