Adobe Commerce CVE-2026-34645: Critical Auth Bypass Grants Write Access
The National Vulnerability Database has detailed CVE-2026-34645, a high-severity (CVSS 7.5) Incorrect Authorization vulnerability impacting Adobe Commerce. This flaw affects multiple versions, including 2.4.9-beta1, 2.4.8-p4, 2.4.7-p9, 2.4.6-p14, 2.4.5-p16, and 2.4.4-p17, as well as earlier iterations.
This vulnerability allows an attacker to bypass critical security features without requiring any user interaction. The primary impact is unauthorized write access, which is a severe risk for an e-commerce platform. Such access could lead to defacement, data manipulation, or even supply chain attacks through compromised product listings or payment gateways.
For defenders, this is a clear and present danger. An attacker exploiting this could inject malicious code, alter pricing, or redirect customers, directly impacting revenue and customer trust. The lack of user interaction required makes this an attractive target for automated attacks, emphasizing the urgency of patching.
What This Means For You
- If your organization runs Adobe Commerce, prioritize patching for CVE-2026-34645 immediately. An unauthenticated attacker can gain unauthorized write access, potentially leading to website defacement, malicious script injection, or other supply chain compromises. Review your access logs for any anomalous write operations or unauthorized changes.
Related ATT&CK Techniques
🛡️ Detection Rules
3 rules · 6 SIEM formats3 detection rules auto-generated for this incident, mapped to MITRE ATT&CK. Sigma YAML is free — export to any SIEM format via the Intel Bot.
Adobe Commerce CVE-2026-34645 - Unauthenticated Write Access Attempt
title: Adobe Commerce CVE-2026-34645 - Unauthenticated Write Access Attempt
id: scw-2026-05-12-ai-1
status: experimental
level: critical
description: |
This rule detects attempts to exploit CVE-2026-34645 by targeting the '/rest/V1/config/metadata' endpoint via a POST request, which could lead to unauthorized write access without authentication. This is a critical indicator of exploitation for this specific vulnerability.
author: SCW Feed Engine (AI-generated)
date: 2026-05-12
references:
- https://shimiscyberworld.com/posts/nvd-CVE-2026-34645/
tags:
- attack.initial_access
- attack.t1190
logsource:
category: webserver
detection:
selection:
cs-uri|contains:
- '/rest/V1/config/metadata'
cs-method:
- 'POST'
sc-status:
- '200'
condition: selection
falsepositives:
- Legitimate administrative activity
Source: Shimi's Cyber World · License & reuse
Indicators of Compromise
| ID | Type | Indicator |
|---|---|---|
| CVE-2026-34645 | Auth Bypass | Adobe Commerce versions 2.4.9-beta1, 2.4.8-p4, 2.4.7-p9, 2.4.6-p14, 2.4.5-p16, 2.4.4-p17 and earlier |
| CVE-2026-34645 | Auth Bypass | Incorrect Authorization vulnerability leading to Security feature bypass |
| CVE-2026-34645 | Privilege Escalation | Unauthorized write access |
Written by SCW Vulnerability Desk
Source & Attribution
| Source Platform | NVD |
| Channel | National Vulnerability Database |
| Published | May 12, 2026 at 23:16 UTC |
This content was AI-rewritten and enriched by Shimi's Cyber World based on the original source. All intellectual property rights remain with the original author.
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