VDB-187987 · CVE-2021-20866 · GCVE-0-2021-20866

Advanced Custom Fields Plugin up to 5.10 on WordPress authorization

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
3.4	$0-$5k	0.00

Summaryinfo

A vulnerability identified as critical has been detected in Advanced Custom Fields Plugin up to 5.10 on WordPress. This affects an unknown function. This manipulation causes authorization. This vulnerability is tracked as CVE-2021-20866. No exploit exists. You should upgrade the affected component.

Detailsinfo

A vulnerability has been found in Advanced Custom Fields Plugin up to 5.10 on WordPress (WordPress Plugin) and classified as problematic. Affected by this vulnerability is some unknown functionality. The manipulation with an unknown input leads to a authorization vulnerability. The CWE definition for the vulnerability is CWE-862. The product does not perform an authorization check when an actor attempts to access a resource or perform an action. As an impact it is known to affect confidentiality.

The weakness was disclosed 12/13/2021. It is possible to read the advisory at jvn.jp. This vulnerability is known as CVE-2021-20866. The technical details are unknown and an exploit is not publicly available.

Upgrading to version 5.11 eliminates this vulnerability.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

WordPress Plugin

Name

Advanced Custom Fields Plugin

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.5
VulDB Meta Temp Score: 3.4

VulDB Base Score: 3.5
VulDB Temp Score: 3.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Authorization
CWE: CWE-862 / CWE-863 / CWE-285
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Advanced Custom Fields Plugin 5.11

Timelineinfo

12/17/2020 🔍
12/13/2021 +361 days 🔍
12/13/2021 +0 days 🔍
12/15/2021 +2 days 🔍

Sourcesinfo

Advisory: jvn.jp
Status: Confirmed

CVE: CVE-2021-20866 (🔍)
GCVE (CVE): GCVE-0-2021-20866
GCVE (VulDB): GCVE-100-187987

Entryinfo

Created: 12/13/2021 14:04
Updated: 12/15/2021 21:21
Changes: 12/13/2021 14:04 (38), 12/15/2021 21:21 (2)
Complete: 🔍
Cache ID: 216::103