CVE-2026-114548

ImageAPI Optimize WebP - Moderately critical - Information disclosure - SA-CONTRIB-2026-247

3.7 LowFix available

Use of Web Browser Cache Containing Sensitive Information vulnerability in Drupal ImageAPI Optimize WebP allows Exploiting Incorrectly Configured Access Control Security Levels. This issue affects ImageAPI Optimize WebP versions: from 0.0.0 to 2.1.2.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: High
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: Low
Integrity: None
Availability: None

Exploit likelihood

0.21%Up 0.1 points since Oct 30, 2026

What each source reports

CVE List Score used 3.7

ImageAPI Optimize WebP - Moderately critical - Information disclosure - SA-CONTRIB-2026-247

Record: CVE-2026-114548
CVSS 3.1: 3.7 LowCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
Weakness: CWE-525
Updated: 2026-11-06

EUVDEUVD-2026-113525 3.7

Record: EUVD-2026-113525
CVSS 3.1: 3.7 LowCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
Updated: 2026-11-06

GitHub AdvisoriesGHSA-7xvw-p86p-5r6x 3.7

Use of Web Browser Cache Containing Sensitive Information vulnerability in Drupal ImageAPI...

Record: GHSA-7xvw-p86p-5r6x
CVSS 3.1: 3.7 LowCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
Weakness: CWE-525
Updated: 2026-11-06

NVD 3.7

Record: CVE-2026-114548
CVSS 3.1: 3.7 LowCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
Weakness: CWE-525
Updated: 2026-11-06

OSV 3.7

ImageAPI Optimize WebP - Moderately critical - Information disclosure - SA-CONTRIB-2026-247

Record: CVE-2026-114548
CVSS 3.1: 3.7 LowCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
Weakness: CWE-525
Updated: 2026-11-07

OSVDRUPAL-CONTRIB-2026-247 No score

This module enables you to generate and serve WebP derivatives of image style images, overriding Drupal core's image style download controller to serve them.

The module serves WebP image derivative responses with the HTTP header Cache-Control: public for all file schemes other than the private file system, including the temporary file system and access-controlled custom schemes. This can lead to some users getting cached versions of files with information they should not be able to access. For example, files may be cached by Varnish or a CDN.

This vulnerability is mitigated by the fact that it only affects sites that serve image derivatives from a custom or temporary file scheme with access control, behind a shared cache that honors the Cache-Control header. Access checks are still enforced on requests that reach the site itself. An attacker would also need to know the path of a previously requested file still in cache.

This is the same vulnerability class fixed in Drupal core by SA-CORE-2025-008 and SA-CORE-2026-010; the module's controller override reintroduced the behavior.

Record: DRUPAL-CONTRIB-2026-247
Updated: 2026-11-02

Affected products

drupal imageapi optimize webp

Affected packages

Affected packages
Package	Affected	Fixed
`drupal/imageapi_optimize_webp` Packagist:https://packages.drupal.org/8	before 2.1.2	2.1.2

History

History
Recorded	Changed	Sources
Nov 6, 2026	facts, severity	CVE List, EUVD
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-114548 is a low vulnerability (CVSS 3.7) in Drupal Imageapi Optimize Webp, published October 21, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.21%, the 10th percentile. Fixed in drupal/imageapi_optimize_webp 2.1.2.