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CVE-2026-15917

Drupal core - Moderately critical - Cross-site scripting - SA-CORE-2026-011

MEDIUM
4.7
CVSS Score
Published: August 25, 2026 at 10:22 PM UTC
Updated: August 28, 2026 at 03:42 PM UTC
1 product affected across 1 vendorDrupal

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Severity
MEDIUM4.7
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

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 11.3.0 to 11.3.14, from 11.4.0 to 11.4.4, from 0.0.0 to 11.2.*.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Drupal· Drupaldrupal
60%
0.0.0 ≤ v < 11.2.*11.3.0 ≤ v < 11.3.1411.4.0 ≤ v < 11.4.40.0.011.3.011.4.0
Affected range stops below 11.2.*, so it looks safe — our inference, not a vendor statement
Affected range stops below 11.3.14, so it looks safe — our inference, not a vendor statement
Affected range stops below 11.4.4, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

Source: cverecord
https://www.drupal.org/sa-core-2026-011

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

4.7MEDIUMCISA-ADP
Attack Vector
NETWORK
Complexity
HIGH
Privileges
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusAWAITING ANALYSIS
CWE
CWE-79

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