CVE-2026-34649: 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 affec

Q: How do I fix CVE-2026-34649?

commerce: upgrade to 2.4.4; commerce b2b: upgrade to 1.3.3; magento: upgrade to 2.4.6. Exact commands for each OS are on this page.

Q: Is CVE-2026-34649 being exploited?

CVE-2026-34649 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-34649 affect?

CVE-2026-34649 affects commerce, commerce b2b, magento. Severity is high (CVSS 7.5). 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 expl

Q: How urgent is CVE-2026-34649?

Priority 55/100. High severity; EPSS top 4%: very likely to be exploited; Remotely exploitable, no login, no user action

This week

HIGH 7.5REMOTEUPGRADEUPGRADEUPGRADE

CVE-2026-34649 is a high-severity flaw (CVSS 7.5) affecting commerce, commerce b2b, magento. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

High severity
EPSS top 4%: very likely to be exploited
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	13.6% (top 4%)
CISA exploited list	No
Weakness	CWE-400
Published	2026-05-12
Last modified	2026-10-26

Publisher (CNA): Adobe Systems Incorporated · Vendor: adobe

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-05-12 20:16 UTCPublished CVE record published
2026-10-26 18:10 UTCUpdated Record last modified

adobe commerce UPGRADE

Affected: < 2.4.4 · 2.4.4 · 2.4.4 p1 · 2.4.4 p10 · 2.4.4 p11 · 2.4.4 p12 · 2.4.4 p13 · 2.4.4 p14

Fixed in: 2.4.4

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy commerce || rpm -q commerce || commerce --version

2. UPGRADE to 2.4.4 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade commerce

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade commerce

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

adobe commerce b2b UPGRADE

Affected: < 1.3.3 · 1.3.3 · 1.3.3 p1 · 1.3.3 p10 · 1.3.3 p11 · 1.3.3 p12 · 1.3.3 p13 · 1.3.3 p14

Fixed in: 1.3.3

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy commerce-b2b || rpm -q commerce-b2b || commerce-b2b --version

2. UPGRADE to 1.3.3 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade commerce-b2b

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade commerce-b2b

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

adobe magento UPGRADE

Affected: < 2.4.6 · 2.4.6 · 2.4.6 p1 · 2.4.6 p10 · 2.4.6 p11 · 2.4.6 p12 · 2.4.6 p13 · 2.4.6 p14

Fixed in: 2.4.6

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy magento || rpm -q magento || magento --version

2. UPGRADE to 2.4.6 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade magento

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade magento

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Exact fixes by distribution

Fedora 46 · ddnet · FIXED · 20.2-1.fc46 · FEDORA-2026-6991b4ab14 · source

sudo dnf upgrade --advisory=FEDORA-2026-6991b4ab14

Fedora ELN · libplacebo · FIXED · 7.360.1-5.eln159 · FEDORA-2026-92226f221e · source

sudo dnf upgrade --advisory=FEDORA-2026-92226f221e

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-34649?

commerce: upgrade to 2.4.4; commerce b2b: upgrade to 1.3.3; magento: upgrade to 2.4.6. Exact commands for each OS are on this page.

Is CVE-2026-34649 being exploited?

CVE-2026-34649 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-34649 affect?

CVE-2026-34649 affects commerce, commerce b2b, magento. Severity is high (CVSS 7.5). 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 expl

How urgent is CVE-2026-34649?

Priority 55/100. High severity; EPSS top 4%: very likely to be exploited; Remotely exploitable, no login, no user action

Software pages

Magento vulnerabilities

Related CVEs

CVE-2026-34648 HIGH 7.5 UPGRADE UPGRADE 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 affec
CVE-2026-34650 HIGH 7.5 UPGRADE UPGRADE 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 affec
CVE-2026-34651 HIGH 7.5 UPGRADE UPGRADE 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 affec
CVE-2026-34645 HIGH 7.5 UPGRADE UPGRADE 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 affec
CVE-2026-34653 HIGH 8.7 UPGRADE UPGRADE 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 affec

References

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