CVE-2021-39317Network attack vector

Authenticated code execution via unchecked plugin ZIP upload

Published Oct 11, 2021 · Updated Feb 14, 2025

Arbitrary file upload in AccessPress Themes products allows remote authenticated users to execute PHP through a crafted plugin ZIP. The plugin_offline_installer_callback handler accepts an attacker-controlled file_location, extracts the referenced ZIP into the plugins directory, and activates its nominated PHP entry without a capability or nonce check. Subscriber access is sufficient; malicious PHP such as a web shell then executes in the WordPress server context, enabling full site takeover.

CVSS severity8.8
High
EPSS probability1.71%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Arbitrary file upload in AccessPress Themes products allows remote authenticated users to execute PHP through a crafted plugin ZIP. The plugin_offline_installer_callback handler accepts an attacker-controlled file_location, extracts the referenced ZIP into the plugins directory, and activates its nominated PHP entry without a capability or nonce check. Subscriber access is sufficient; malicious PHP such as a web shell then executes in the WordPress server context, enabling full site takeover.

The record

CVE
CVE-2021-39317
Published
Oct 11, 2021
Updated
Feb 14, 2025
Vendor
AccessPress Themes
Product
WPParallax
Classifications
CWE-285, CWE-434, T1505.003
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 11, 2021CVE publishedPublication date reported by the CVE source.
  2. Feb 14, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=2.0.6 <=2.0.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

AccessPress Themes · WPParallaxversion=2.0.6 <=2.0.6
AccessPress Themes · Sakalaversion=1.0.4 <=1.0.4
AccessPress Themes · AccessPress Basicversion=3.2.1 <=3.2.1
AccessPress Themes · Edict Liteversion=1.1.4 <=1.1.4
AccessPress Themes · StoreVillaversion=1.4.1 <=1.4.1
AccessPress Themes · VMagazine Liteversion=1.3.5 <=1.3.5
AccessPress Themes · Swing Liteversion=1.1.9 <=1.1.9
AccessPress Themes · Ultra Sevenversion=1.2.8 <=1.2.8
AccessPress Themes · AccessPress Rootversion=2.5 <=2.5
AccessPress Themes · Enlightenversion=1.3.5 <=1.3.5
AccessPress Themes · Rippleversion=1.2.0 <=1.2.0
AccessPress Themes · Agency Liteversion=1.1.6 <=1.1.6
AccessPress Themes · VMagversion=1.2.7 <=1.2.7
AccessPress Themes · Brovyversion=1.3 <=1.3
AccessPress Themes · The100version=1.1.2 <=1.1.2
AccessPress Themes · Opstoreversion=1.4.3 <=1.4.3
AccessPress Themes · The Mondayversion=1.4.1 <=1.4.1
AccessPress Themes · AccessPress Storeversion=2.4.9 <=2.4.9
AccessPress Themes · FotoGraphyversion=2.4.0 <=2.4.0
AccessPress Themes · Revolveversion=1.3.1 <=1.3.1
AccessPress Themes · ScrollMeversion=2.1.0 <=2.1.0
AccessPress Themes · Zigcy Babyversion=1.0.6 <=1.0.6
AccessPress Themes · Vmagazine Newsversion=1.0.5 <=1.0.5
AccessPress Themes · AccessPress Parallaxversion=4.5 <=4.5
AccessPress Themes · Bingleversion=1.0.4 <=1.0.4
AccessPress Themes · Uncode Liteversion=1.3.3 <=1.3.3
AccessPress Themes · Construction Liteversion=1.2.5 <=1.2.5
AccessPress Themes · AccessPress Liteversion=2.9.2 <=2.9.2
AccessPress Themes · Access Demo Importerversion=1.0.6 <=1.0.6
AccessPress Themes · Punteversion=1.1.2 <=1.1.2
AccessPress Themes · ParallaxSomeversion=1.3.6 <=1.3.6
AccessPress Themes · WP Storeversion=1.1.9 <=1.1.9
AccessPress Themes · Arrivalversion=1.4.2 <=1.4.2
AccessPress Themes · Dokoversion=1.0.27 <=1.0.27
AccessPress Themes · Zigcy Liteversion=2.0.9 <=2.0.9
AccessPress Themes · The Launcherversion=1.3.2 <=1.3.2
AccessPress Themes · AccessPress Magversion=2.6.5 <=2.6.5
AccessPress Themes · Zigcy Cosmeticsversion=1.0.5 <=1.0.5
AccessPress Themes · Blogerversion=1.2.6 <=1.2.6

Published CVSS scores

8.8WordfenceCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-285Improper Authorization
CWE-434Unrestricted Upload of File with Dangerous Type
T1505.003Server Software Component: Web Shell

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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