CVE-2021-20867: advancedcustomfields advanced_custom_fields Missing Authorization
CVSS: 6.5v3.1MediumModified
Published 13-12-2021Last modified 03-08-2024
Vulnerability summary
CVE-2021-20867 is a medium (CVSS 6.5) Missing Authorization vulnerability in advancedcustomfields advanced_custom_fields. EPSS estimates a 1.47% chance of exploitation in the next 30 days, higher than 73.5% of scored vulnerabilities.
CVSS score
6.5/10
010
Medium · v3.1 (NVD)EPSS score
1.47%
0%100%
Low · +0.10 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 13-12-2021PublishedVulnerability first disclosed.
- 03-08-2024Last modifiedVulnerability information updated.
Description
Advanced Custom Fields versions prior to 5.11 and Advanced Custom Fields Pro versions prior to 5.11 contain a missing authorization vulnerability in moving the field group which may allow a user to move the unauthorized field group via unspecified vectors.
CVSS metrics
3 scores · 2 sources · 2 versionsMedium 6.5Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:NSources2 sources · 4.3–6.5
- wordfenceSource4.3MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:NDiffers
Medium 4.0Preferred score · NVD (NIST)
AV:N/AC:L/Au:S/C:N/I:P/A:NSourcesSingle source
EPSS trend
Probability
1.47%
Chance of exploitation in the next 30 days
Percentile
74%
Versus all other CVEs
30-day change
+0.10 pp
From 1.37% on 21-09-2026
21-09-202621-10-2026
EPSS score1.47%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Wordpress2 products
- advanced-custom-fields< 5.11
- advanced-custom-fields-pro< 5.11
Advancedcustomfields1 product
- advanced_custom_fields< 5.11
Delicious brains1 product
- advanced custom fields and advanced custom fields proversions prior to 5.11
3 vendors · 4 products