CVE-2026-55808

mediumpriority · track · 0EPSS 0.003 · 20 %ileDEEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.27% (20th) EPSS

CVSS 5.4 · medium

Is it mine?

28 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · osv · cert_bund

EPSS · scored 2026-10-27

Improper Neutralization of Input During Web Page Generation ("Cross-site Scripting") vulnerability in Drupal Drupal core allows Cross-Site Scripting (XSS). This issue affects Drupal core versions: from 0.0.0 to 10.5.12, from 10.6.0 to 10.6.11, from 11.2.0 to 11.2.14, from 11.3.0 to 11.3.12, from 0.0.0 to 11.0.*, from 0.0.0 to 11.1.*.

cvss

Technical severity, 0–10. One row per scoring source.

5.4

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.15.4mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:Nsecondary · ENISA EU

v3.15.4mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:Nsecondaryexploitability 2.3 · impact 2.7

v3.15mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-79US

affected products (28)

Products and version ranges known to be affected.

Open Source Drupal Core <10.5.12all versionscert_bundDE
Open Source Drupal Core <10.6.11all versionscert_bundDE
Open Source Drupal Core <11.2.14all versionscert_bundDE
Open Source Drupal Core <11.3.12all versionscert_bundDE
Open Source Drupal≤ Core <11.3.12cert_bundDE
Open Source Drupal≤ Core <10.5.12cert_bundDE
Open Source Drupal≤ Core <10.6.11cert_bundDE
Open Source Drupal≤ Core <11.2.14cert_bundDE
Drupal drupal core0.0.0 → 10.5.12enisa_euvdEU
Drupal drupal core0.0.0 → 11.0.*enisa_euvdEU
Drupal drupal core0.0.0 → 11.1.*enisa_euvdEU
Drupal drupal core10.6.0 → 10.6.11enisa_euvdEU
Drupal drupal core11.2.0 → 11.2.14enisa_euvdEU
Drupal drupal core11.3.0 → 11.3.12enisa_euvdEU
drupal drupal< 10.5.12nvdUScpe:2.3:a:drupal:drupal:*:*:*:*:*:*:*:*
drupal drupal10.6.0 → 10.6.11nvdUScpe:2.3:a:drupal:drupal:*:*:*:*:*:*:*:*
drupal drupal11.0.0 → 11.2.14nvdUScpe:2.3:a:drupal:drupal:*:*:*:*:*:*:*:*
drupal drupal11.3.0 → 11.3.12nvdUScpe:2.3:a:drupal:drupal:*:*:*:*:*:*:*:*
Bitnami drupal< 10.5.12osvUSpkg:bitnami/drupal
Bitnami drupal10.6.0 → 10.6.11osvUSpkg:bitnami/drupal

showing 20 of 28

advisories (3)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2026-2002Drupal Core: Mehrere SchwachstellenDeutsch2026-06-17csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Drupal Core ausnutzen, um beliebigen Programmcode auszuführen, Cross-Site-Scripting-Angriffe durchzuführen, um Daten zu manipulieren, oder um Nutzer auf bösartige Websites umzuleiten.
BIT-drupal-2026-55808Drupal core - Moderately critical - Improper validation - SA-CORE-2026-0092026-07-19vendor · osvUS
Improper Neutralization of Input During Web Page Generation ("Cross-site Scripting") vulnerability in Drupal Drupal core allows Cross-Site Scripting (XSS). This issue affects Drupal core versions: from 0.0.0 to 10.5.12, from 10.6.0 to 10.6.11, from 11.2.0 to 11.2.14, from 11.3.0 to 11.3.12, from 0.0.0 to 11.0.*, from 0.0.0 to 11.1.*.
DRUPAL-CORE-2026-0092026-06-17vendor · osvUS
The JSON:API and REST modules allow you to upload image files to image fields. The validation rules check the file extension of the uploaded file but not the file MIME type. This may allow a malicious user to upload a file that is not an image. Certain web-server configurations may serve the uploaded file with its actual MIME type rather than an image type. This may lead to cross-site scripting (XSS) or other unexpected behavior.

also known as (5)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd osv cert_bund nvd NVD CVE.org MITRE

published 2026-07-10modified 2026-10-25

references (3)

External citations — patches, advisories, analysis.

scry

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