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

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-15917
StatePUBLISHED
Assignerdrupal
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-25 23:16:56 UTC
Updated2026-08-28 15:29:44 UTC
DescriptionImproper 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.*.

Risk And Classification

Primary CVSS: v3.1 4.7 MEDIUM from ADP

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS: 0.001290000 probability, percentile 0.028490000 (date 2026-08-30)

Problem Types: CWE-79 | CWE-79 CWE-79 Improper Neutralization of Input During Web Page Generation ("Cross-site Scripting")

VersionSourceTypeScoreSeverityVector
3.1ADPDECLARED4.7MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N
3.1134c704f-9b21-4f2e-91b3-4a467353bcc0Secondary4.7MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Drupal Drupal Core affected 11.3.0 11.3.14 semver Not specified
CNA Drupal Drupal Core affected 11.4.0 11.4.4 semver Not specified
CNA Drupal Drupal Core affected 0.0.0 11.2.* semver Not specified

References

ReferenceSourceLinkTags
www.drupal.org/sa-core-2026-011 [email protected] www.drupal.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Pierre Rudloff (prudloff) (en)

CNA: Shawn Duncan (fathershawn) (en)

CNA: Pierre Rudloff (prudloff) (en)

CNA: catch (catch) (en)

CNA: Lee Rowlands (larowlan) (en)

CNA: Dave Long (longwave) (en)

CNA: Jess (xjm) (en)

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