Webform REST - Moderately critical - Access bypass - SA-CONTRIB-2026-087

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-16644
StatePUBLISHED
Assignerdrupal
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-25 23:16:57 UTC
Updated2026-08-28 15:29:44 UTC
DescriptionIncorrect Authorization vulnerability in Drupal Webform REST allows Forceful Browsing. This issue affects Webform REST versions: from 0.0.0 to 4.1.0.

Risk And Classification

Primary CVSS: v3.1 9.1 CRITICAL from ADP

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

EPSS: 0.003130000 probability, percentile 0.236220000 (date 2026-08-30)

Problem Types: CWE-863 | CWE-863 CWE-863 Incorrect Authorization

VersionSourceTypeScoreSeverityVector
3.1ADPDECLARED9.1CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
3.1134c704f-9b21-4f2e-91b3-4a467353bcc0Secondary9.1CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

CVSS v3.1 Breakdown

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

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Drupal Webform REST affected 0.0.0 4.1.0 semver Not specified

References

ReferenceSourceLinkTags
www.drupal.org/sa-contrib-2026-087 [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: Giuseppe (giuseppe87) (en)

CNA: Dan Chadwick (danchadwick) (en)

CNA: Giuseppe (giuseppe87) (en)

CNA: Jacob Rockowitz (jrockowitz) (en)

CNA: Liam Morland (liam morland) (en)

CNA: Nelson Alves (nsalves) (en)

CNA: Anna Kalata (akalata) (en)

CNA: cilefen (cilefen) (en)

CNA: Greg Knaddison (greggles) (en)

CNA: Michael Hess (mlhess) (en)

CNA: Juraj Nemec (poker10) (en)

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