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CVE-2026-34686: 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

39
Routine
HIGH 8.7DOWNGRADEDOWNGRADEDOWNGRADE

CVE-2026-34686 is a high-severity flaw (CVSS 8.7) 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 a stored Cross-Site Scripting (XSS) vulnerability that could be abused by a low-privileged attacker to inject malicious scripts into vulnerable form fields. Malicious JavaScript may be executed in a victim's browser when they browse to the page containing the vulnerable field, potentially gaining elevated access or control over the

Why this priority

  • High severity

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score8.7 (High)
Attack vectorNetwork (remote)
Attack complexityLow
Privileges neededLow
User interactionRequired
EPSS exploit chance0.4% (top 66%)
CISA exploited listNo
WeaknessCWE-79
Published2026-05-12
Last modified2026-10-26
Publisher (CNA): Adobe Systems Incorporated · Vendor: adobe

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

Am I affected?

Timeline

adobe commerce DOWNGRADE
Affected: 2.4.4 p1 · 2.4.4 p10 · 2.4.4 p11 · 2.4.4 p12 · 2.4.4 p13 · 2.4.4 p14 · 2.4.4 p15 · 2.4.4 p16
Fixed in: no fixed release known
Safe to downgrade to: a release before 2.4.4
1. Check installed version
apt-cache policy commerce || rpm -q commerce || commerce --version
2. No fixed release: DOWNGRADE to a release before 2.4.4 (Debian / Ubuntu)
apt-cache madison commerce sudo apt install commerce=<VERSION_BEFORE_2.4.4> sudo apt-mark hold commerce
2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list commerce sudo dnf downgrade commerce-<VERSION_BEFORE_2.4.4> sudo dnf versionlock add commerce
Downgrade risk
Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.
After downgrade
Restart the service, and keep the package held until a fixed release ships.
adobe commerce b2b DOWNGRADE
Affected: 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 · 1.3.3 p15
Fixed in: no fixed release known
Safe to downgrade to: a release before 1.3.3
1. Check installed version
apt-cache policy commerce-b2b || rpm -q commerce-b2b || commerce-b2b --version
2. No fixed release: DOWNGRADE to a release before 1.3.3 (Debian / Ubuntu)
apt-cache madison commerce-b2b sudo apt install commerce-b2b=<VERSION_BEFORE_1.3.3> sudo apt-mark hold commerce-b2b
2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list commerce-b2b sudo dnf downgrade commerce-b2b-<VERSION_BEFORE_1.3.3> sudo dnf versionlock add commerce-b2b
Downgrade risk
Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.
After downgrade
Restart the service, and keep the package held until a fixed release ships.
adobe magento DOWNGRADE
Affected: 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 · 2.4.6 p2
Fixed in: no fixed release known
Safe to downgrade to: a release before 2.4.6
1. Check installed version
apt-cache policy magento || rpm -q magento || magento --version
2. No fixed release: DOWNGRADE to a release before 2.4.6 (Debian / Ubuntu)
apt-cache madison magento sudo apt install magento=<VERSION_BEFORE_2.4.6> sudo apt-mark hold magento
2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list magento sudo dnf downgrade magento-<VERSION_BEFORE_2.4.6> sudo dnf versionlock add magento
Downgrade risk
Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.
After downgrade
Restart the service, and keep the package held until a fixed release ships.
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-2026-34686?

commerce: downgrade or apply the listed mitigation; commerce b2b: downgrade or apply the listed mitigation; magento: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2026-34686 being exploited?

CVE-2026-34686 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-2026-34686 affect?

CVE-2026-34686 affects commerce, commerce b2b, magento. Severity is high (CVSS 8.7). 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 a stored Cross-Site Scripting (XSS) vulnerability that could be abused by a low-privileged attacker to inject malicious scr

How urgent is CVE-2026-34686?

Priority 39/100. High severity

Software pages

Magento vulnerabilities

Related CVEs

References

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