Adobe Commerce: Uncontrolled Resource Consumption
CVE-2026-34649 is a high-severity uncontrolled resource consumption vulnerability in Adobe Commerce from Adobe, with a CVSS 3.1 base score of 7.5 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, without any action from a user. Affected Adobe Commerce versions: 0. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 13.6% chance of exploitation within 30 days, which is in the top 3.47% of all scored CVEs.
EPSS places it among the vulnerabilities most likely to be exploited soon.
What to do
- Update Commerce to 2.4.4 or a later version.
- Update Commerce B2b to 1.3.3 or a later version.
- Update Magento to 2.4.6 or a later version.
- Read the advisory on helpx.adobe.com for workarounds and exact fixed builds.
- Until you can update, restrict network access to the affected service so it is not reachable from untrusted networks.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Adobe | Adobe Commerce | 0 | Not stated |
| Adobe | Adobe Commerce B2B | 1.5.3-beta1, 1.5.2-p4, 1.4.2-p9, 1.3.4-p16, 1.3.3-p17 and earlier | Not stated |
| Adobe | Magento Open Source | 2.4.9-beta1, 2.4.8-p4, 2.4.7-p9, 2.4.6-p14 and earlier | Not stated |
| Adobe | Commerce | before 2.4.4; 2.4.4; 2.4.5; 2.4.6; 2.4.7; 2.4.8; 2.4.9 | 2.4.4 |
| Adobe | Commerce B2b | before 1.3.3; 1.3.3; 1.3.4; 1.4.2; 1.5.2; 1.5.3 | 1.3.3 |
| Adobe | Magento | before 2.4.6; 2.4.6; 2.4.7; 2.4.8; 2.4.9 | 2.4.6 |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- NetworkCan be exploited remotely over a network, including the internet.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- NoneNo account or login is needed.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- NoneNo data is disclosed.
- Integrity
- NoneNothing can be modified.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H. Scored by CNA (adobe.com).
Official description
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 are affected by an Uncontrolled Resource Consumption vulnerability that could lead to application denial-of-service. An attacker could exploit this vulnerability to exhaust system resources, resulting in an application denial-of-service condition. Exploitation of this issue does not require user interaction.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Uncontrolled Resource Consumption
The product does not properly control the allocation and maintenance of a limited resource.
How developers prevent this class of flaw
- Ensure that protocols have specific limits of scale placed on them.
- Ensure that all failures in resource allocation place the system into a safe posture.
More Uncontrolled Resource Consumption vulnerabilities (CWE-400)
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: yes, technical impact: partial).
- Record last changed materially (score, affected products, status or references).
References
Other vulnerabilities in Adobe Commerce
- 9.1 Critical severity
- 8.1 High severity
- 8.7 High severity
- 7.2 High severity
- 9.8 Critical severity
- 8.3 High severity
Recent Uncontrolled Resource Consumption vulnerabilities
- 7.5 High severity
- 7.5 High severity
- 7.5 High severity
- 7.5 High severity
- 7.5 High severity
- 7.5 High severity
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