CVE-2026-3714: A vulnerability has been found in OpenCart 4.0.2.3

Routine

MEDIUM 4.7DOWNGRADE

CVE-2026-3714 is a medium-severity flaw (CVSS 4.7) affecting opencart. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A vulnerability has been found in OpenCart 4.0.2.3. Affected by this issue is the function Save of the file admin/controller/design/template.php of the component Incomplete Fix CVE-2024-36694. Such manipulation leads to improper neutralization of special elements used in a template engine. The attack may be performed from remote. The vendor was contacted early about this disclosure but did not respond in any way.

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	4.7 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	None
EPSS exploit chance	0.3% (top 81%)
CISA exploited list	No
Weakness	CWE-791, CWE-1336
Published	2026-03-08
Last modified	2026-06-17

Publisher (CNA): VulDB · Vendor: opencart

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-03-08 07:16 UTCPublished CVE record published
2026-06-17 10:44 UTCUpdated Record last modified

opencart opencart DOWNGRADE

Affected: 4.0.2.3

Fixed in: no fixed release known

Safe to downgrade to: a release before 4.0.2.3

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 4.0.2.3 (Debian / Ubuntu)

apt-cache madison opencart sudo apt install opencart=<VERSION_BEFORE_4.0.2.3> sudo apt-mark hold opencart

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list opencart sudo dnf downgrade opencart-<VERSION_BEFORE_4.0.2.3> sudo dnf versionlock add opencart

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-2026-3714?

opencart: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2026-3714 being exploited?

CVE-2026-3714 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-2026-3714 affect?

CVE-2026-3714 affects opencart. Severity is medium (CVSS 4.7). A vulnerability has been found in OpenCart 4.0.2.3. Affected by this issue is the function Save of the file admin/controller/design/template.php of the component Incomplete Fix CVE-2024-36694. Such manipulation leads to improper neutralizat

How urgent is CVE-2026-3714?

Priority 21/100. No elevated risk signals yet.

Software pages

PHP vulnerabilities · OpenCart vulnerabilities

Related CVEs

CVE-2024-58341 HIGH 8.2 DOWNGRADE OpenCart Core 4.0.2.3 contains a SQL injection vulnerability that allows unauthenticated attackers to manipula

References

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