CVE-2018-8823: modules/bamegamenu/ajax_phpcode.php in the Responsive Mega Menu (Horizontal+Vertical+Dropdown) Pro module 1.0.

This week

CRITICAL 9.8REMOTEDOWNGRADEUPGRADE

CVE-2018-8823 is a critical-severity flaw (CVSS 9.8) affecting responsive mega menu pro, prestashop. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

modules/bamegamenu/ajax_phpcode.php in the Responsive Mega Menu (Horizontal+Vertical+Dropdown) Pro module 1.0.32 for PrestaShop 1.5.5.0 through 1.7.2.5 allows remote attackers to execute arbitrary PHP code via the code parameter.

Why this priority

Critical severity
EPSS top 1%: very likely to be exploited
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	50.4% (top 1%)
CISA exploited list	No
Weakness	CWE-94
Published	2018-03-28
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: prestashop · responsive mega menu pro project

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

Am I affected?

Timeline

2018-03-28 02:29 UTCPublished CVE record published
2026-06-17 02:05 UTCUpdated Record last modified

responsive mega menu pro project responsive mega menu pro DOWNGRADE

Affected: 1.0.32

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0.32

1. Check installed version

apt-cache policy responsive-mega-menu-pro || rpm -q responsive-mega-menu-pro || responsive-mega-menu-pro --version

2. No fixed release: DOWNGRADE to a release before 1.0.32 (Debian / Ubuntu)

apt-cache madison responsive-mega-menu-pro sudo apt install responsive-mega-menu-pro=<VERSION_BEFORE_1.0.32> sudo apt-mark hold responsive-mega-menu-pro

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

dnf --showduplicates list responsive-mega-menu-pro sudo dnf downgrade responsive-mega-menu-pro-<VERSION_BEFORE_1.0.32> sudo dnf versionlock add responsive-mega-menu-pro

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.

prestashop prestashop UPGRADE

Affected: >= 1.5.5.0 and <= 1.7.2.5

Fixed in: newer than 1.7.2.5

Safe to downgrade to: a release before 1.5.5.0

1. Check installed version

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

2. UPGRADE to newer than 1.7.2.5 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade prestashop

Note

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

3. If no update is available yet, DOWNGRADE to a release before 1.5.5.0 (Debian / Ubuntu)

apt-cache madison prestashop sudo apt install prestashop=<VERSION_BEFORE_1.5.5.0> sudo apt-mark hold prestashop

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list prestashop sudo dnf downgrade prestashop-<VERSION_BEFORE_1.5.5.0> sudo dnf versionlock add prestashop

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.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Nuclei scan template: PrestaShop Responsive Mega Menu Module - Remote Code Execution

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-2018-8823?

responsive mega menu pro: downgrade or apply the listed mitigation; prestashop: upgrade to newer than 1.7.2.5. Exact commands for each OS are on this page.

Is CVE-2018-8823 being exploited?

CVE-2018-8823 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-2018-8823 affect?

CVE-2018-8823 affects responsive mega menu pro, prestashop. Severity is critical (CVSS 9.8). modules/bamegamenu/ajax_phpcode.php in the Responsive Mega Menu (Horizontal+Vertical+Dropdown) Pro module 1.0.32 for PrestaShop 1.5.5.0 through 1.7.2.5 allows remote attackers to execute arbitrary PHP code via the code parameter.

How urgent is CVE-2018-8823?

Priority 69/100. Critical severity; EPSS top 1%: very likely to be exploited; Public exploit reference; Remotely exploitable, no login, no user action

Software pages

PHP vulnerabilities · PrestaShop vulnerabilities

Related CVEs

CVE-2018-8824 CRITICAL 9.8 DOWNGRADE UPGRADE modules/bamegamenu/ajax_phpcode.php in the Responsive Mega Menu (Horizontal+Vertical+Dropdown) Pro module 1.0.

References

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