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Drupal Core CVE-2026-15916

| EUVDEUVD-2026-66185 MEDIUM
Missing Authorization (CWE-862)
2026-08-25 drupal GHSA-jw5p-wr38-7rv7
4.2
CVSS 3.1 · Vendor: drupal
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Severity by source

Vendor (drupal) PRIMARY
4.2 MEDIUM
AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N
vuln.today AI
4.2 MEDIUM

Network-reachable via direct URL access but AC:H reflects required knowledge of protected paths; UI:R limits opportunistic exploitation; PR:N and limited C/I impact are consistent with forceful browsing without full compromise.

3.1 AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N
4.0 AV:N/AC:H/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (drupal).

CVSS VectorVendor: drupal

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

Lifecycle Timeline

4
Analysis Generated
Aug 26, 2026 - 16:10 vuln.today
CVSS changed
Aug 26, 2026 - 15:52 NVD
4.2 (None) 4.2 (MEDIUM)
CVE Published
Aug 25, 2026 - 22:22 cve.org
MEDIUM 4.2
CVE Published
Aug 25, 2026 - 22:22 cve.org
UNKNOWN (no severity yet)

DescriptionCVE.org

Missing Authorization vulnerability in Drupal Drupal core allows Forceful Browsing. This issue affects Drupal core versions: from 0.0.0 to 10.6.13, from 11.3.0 to 11.3.14, from 11.4.0 to 11.4.4, from 0.0.0 to 11.0.*, from 0.0.0 to 11.1.*, from 0.0.0 to 11.2.*.

AnalysisAI

Forceful Browsing in Drupal Core across multiple active and end-of-life release branches (10.x through 10.6.13, 11.3.x through 11.3.14, 11.4.x through 11.4.4, and all 11.0.x-11.2.x) allows unauthenticated remote attackers to bypass authorization and directly access protected resources due to missing authorization checks (CWE-862). The CVSS vector (AV:N/AC:H/PR:N/UI:R) indicates network-reachable exploitation but with high complexity and required user interaction, limiting opportunistic mass attacks. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
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Delivery
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Exploit
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Execution
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Impact
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Vulnerability AssessmentAI

Exploitation Exploitation requires network access to the Drupal site and user interaction (UI:R per CVSS vector) - the exact nature of which is not detailed in available data but likely constrains opportunistic exploitation. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The moderate CVSS score of 4.2 is consistent with the constrained vector: high attack complexity (AC:H) and required user interaction (UI:R) together suppress the practical exploitation rate well below what a raw network-reachable flaw would imply. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation Upgrade Drupal Core to the patched versions confirmed in security advisory SA-CORE-2026-010 (https://www.drupal.org/sa-core-2026-010): for the 10.x branch, upgrade to 10.6.13 or later; for 11.3.x, upgrade to 11.3.14 or later; for 11.4.x, upgrade to 11.4.4 or later. … Detailed patch versions, workarounds, and compensating controls in full report.

Threat intelligence, references, and detailed analysis are available after sign-in.

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CVE-2026-15916 vulnerability details – vuln.today

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