CVE-2021-24220 | All Thrive Themes Legacy Themes < 2.0.0 - Unauthenticated Arbitrary File Upload and Option Deletion

Exp

Thrive “Legacy” Rise by Thrive Themes WordPress theme before 2.0.0, Luxe by Thrive Themes WordPress theme before 2.0.0, Minus by Thrive Themes WordPress theme before 2.0.0, Ignition by Thrive Themes WordPress theme before 2.0.0, FocusBlog by Thrive Themes WordPress theme before 2.0.0, Squared by Thrive Themes WordPress theme before 2.0.0, Voice WordPress theme before 2.0.0, Performag by Thrive Themes WordPress theme before 2.0.0, Pressive by Thrive Themes WordPress theme before 2.0.0, Storied by Thrive Themes WordPress theme before 2.0.0 register a REST API endpoint to compress images using the Kraken image optimization engine. By supplying a crafted request in combination with data inserted using the Option Update vulnerability, it was possible to use this endpoint to retrieve malicious code from a remote URL and overwrite an existing file on the site with it or create a new file.This includes executable PHP files that contain malicious code.

Published: 2021-04-12 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2021-24220 is rated High Exploit Risk (90.8/100): CVSS Critical severity, with high exploitation likelihood (EPSS 63.79%, 98th percentile). 1 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +5.27% over the last day, indicating growing attacker interest. Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2021-24220

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2021-24220

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-03-24 58.52% 63.79% +5.27%
2 2026-03-21 51.29% 58.52% +7.24%
3 2026-01-26 — 51.29% —

Full EPSS history (17 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2021-24220

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.1 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 5.2 [email protected]
6.4 2.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 4.9 [email protected]

Weakness enumeration for CVE-2021-24220

Affected software / configurations for CVE-2021-24220

Vendor Product Version Raw CPE
thrivethemes focusblog < 2.0.0 cpe:2.3:a:thrivethemes:focusblog:*:*:*:*:*:wordpress_:*:*
thrivethemes ignition < 2.0.0 cpe:2.3:a:thrivethemes:ignition:*:*:*:*:*:wordpress:*:*
thrivethemes luxe < 2.0.0 cpe:2.3:a:thrivethemes:luxe:*:*:*:*:*:wordpress:*:*
thrivethemes minus < 2.0.0 cpe:2.3:a:thrivethemes:minus:*:*:*:*:*:wordpress:*:*
thrivethemes performag < 2.0.0 cpe:2.3:a:thrivethemes:performag:*:*:*:*:*:wordpress:*:*
thrivethemes pressive < 2.0.0 cpe:2.3:a:thrivethemes:pressive:*:*:*:*:*:wordpress:*:*
thrivethemes rise < 2.0.0 cpe:2.3:a:thrivethemes:rise:*:*:*:*:*:wordpress:*:*
thrivethemes squared < 2.0.0 cpe:2.3:a:thrivethemes:squared:*:*:*:*:*:wordpress:*:*
thrivethemes storied < 2.0.0 cpe:2.3:a:thrivethemes:storied:*:*:*:*:*:wordpress:*:*
thrivethemes voice < 2.0.0 cpe:2.3:a:thrivethemes:voice:*:*:*:*:*:wordpress:*:*

References for CVE-2021-24220

cvelogic Threat Intelligence