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Adobe Commerce CVE-2026-77109

| EUVDEUVD-2026-74035 HIGH
Incorrect Authorization (CWE-863)
2026-09-08 psirt@adobe.com GHSA-xccm-gp2p-mc5g
8.6
CVSS 3.1 · Vendor: adobe
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Severity by source

Vendor (adobe) PRIMARY
8.6 HIGH
AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
vuln.today AI
8.6 HIGH

Network-exploitable with no prerequisites; scope change reflects privilege escalation into restricted Commerce components; integrity-only impact per vendor-scoped vector.

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

Primary rating from Vendor (adobe).

CVSS VectorVendor: adobe

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

Lifecycle Timeline

2
Analysis Generated
Sep 08, 2026 - 21:15 vuln.today
CVE Published
Sep 08, 2026 - 19:19 nvd
HIGH 8.6

DescriptionCVE.org

Adobe Commerce is affected by an Incorrect Authorization vulnerability that could result in privilege escalation. An attacker could leverage this vulnerability to gain elevated access to restricted resources. Exploitation of this issue does not require user interaction. Scope is changed.

AnalysisAI

Incorrect Authorization (CWE-863) in Adobe Commerce and Magento Open Source allows unauthenticated remote attackers to escalate privileges and gain write access to restricted platform resources without user interaction. Scope change is confirmed: successful exploitation crosses privilege boundaries within the Commerce platform, granting access to administrative or otherwise protected functionality. …

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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 No special conditions required for the authorization bypass itself: the CVSS vector AV:N/AC:L/PR:N/UI:N confirms remote unauthenticated exploitation against network-accessible Adobe Commerce instances running any of the affected version lines (Commerce 2.4.4-2.4.9, Magento Open Source 2.4.6-2.4.9, Commerce B2B 1.3.3-1.5.3) without requiring any account, configuration flag, or user interaction. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The risk profile is elevated and merits prompt patching. … 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 Apply the Adobe August 2026 security patches for the applicable release line: for Adobe Commerce, the patched versions are designated 2.4.4-2026-aug, 2.4.5-2026-aug, 2.4.6-2026-aug, 2.4.7-2026-aug, 2.4.8-2026-aug, and 2.4.9-2026-aug; Magento Open Source patches are available for 2.4.6 through 2.4.9; Adobe Commerce B2B patches cover 1.3.3 through 1.5.3 lines. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours, inventory all Adobe Commerce and Magento Open Source instances across the organization, document their versions and network locations, and verify that access logging is enabled for administrative functions and API endpoints. …

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CVE-2026-77109 vulnerability details – vuln.today

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