WordPress Core < 5.9.2 & Gutenberg < 12.7.2 — Prototype Pollution via Block Editor
954b8064-f317-4af4-a55f-9a61ee945006Published · Updated Action summary
WordPress: Affected: ≤5.9.1Update to 3.7.38 or 3.8.38 or 3.9.36 or 4.0.35 or 4.1.35 or 4.2.32 or 4.3.28 or 4.4.27 or 4.5.26 or 4.6.23 or 4.7.23 or 4.8.19 or 4.9.20 or 5.0.16 or 5.1.13 or 5.2.15 or 5.3.12 or 5.4.10 or 5.5.9 or 5.6.8 or 5.7.6 or 5.8.4 or 5.9.2 or newer
Gutenberg: Affected: <12.7.2Update to 12.7.2 or newer
Fixed versions are per release branch: update to the fix for the branch you run.
All remediation steps- Severity
- Medium5.4
- CVSS
- 5.4CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:NWhat does this vector mean?
AV:NAttack vector- Network
AC:LAttack complexity- Low
PR:LPrivileges required- Low
UI:RUser interaction- Required
S:CScope- Changed
C:LConfidentiality- Low
I:LIntegrity- Low
A:NAvailability- None
- Required access
- Unknown
- Exploit prediction (EPSS)
- No score
- CISA KEV
- Not listed
On this page7
Am I affected?
WordPress wordpress
- Affected≤ 5.9.1
- Patched in3.7.38 / 3.8.38 / 3.9.36 / 4.0.35 / 4.1.35 / 4.2.32 / 4.3.28 / 4.4.27 / 4.5.26 / 4.6.23 / 4.7.23 / 4.8.19 / 4.9.20 / 5.0.16 / 5.1.13 / 5.2.15 / 5.3.12 / 5.4.10 / 5.5.9 / 5.6.8 / 5.7.6 / 5.8.4 / 5.9.2
Update to 3.7.38 / 3.8.38 / 3.9.36 / 4.0.35 / 4.1.35 / 4.2.32 / 4.3.28 / 4.4.27 / 4.5.26 / 4.6.23 / 4.7.23 / 4.8.19 / 4.9.20 / 5.0.16 / 5.1.13 / 5.2.15 / 5.3.12 / 5.4.10 / 5.5.9 / 5.6.8 / 5.7.6 / 5.8.4 / 5.9.2 or newer.
You are affected if you run ≤ 5.9.1. Version 3.7.38, 3.8.38, 3.9.36, 4.0.35, 4.1.35, 4.2.32, 4.3.28, 4.4.27, 4.5.26, 4.6.23, 4.7.23, 4.8.19, 4.9.20, 5.0.16, 5.1.13, 5.2.15, 5.3.12, 5.4.10, 5.5.9, 5.6.8, 5.7.6, 5.8.4, 5.9.2 and later are not affected by this issue.
Gutenberg gutenberg
- Affected< 12.7.2
- Patched in12.7.2
Update to 12.7.2 or newer.
You are affected if you run < 12.7.2. Version 12.7.2 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under WordPress.
- No admin access? Run a passive check of your site. It reads public files only.
What to do
- Update to one of the following versions, or a newer patched version: 3.7.38, 3.8.38, 3.9.36, 4.0.35, 4.1.35, 4.2.32, 4.3.28, 4.4.27, 4.5.26, 4.6.23, 4.7.23, 4.8.19, 4.9.20, 5.0.16, 5.1.13, 5.2.15, 5.3.12, 5.4.10, 5.5.9, 5.6.8, 5.7.6, 5.8.4, 5.9.2
- Update to version 12.7.2, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch WordPress to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to Researchers from Johns Hopkins University.
WordPress Core in various versions < 5.9.2 and Gutenberg versions less than 12.7.2 are vulnerable to prototype pollution via the block editor which could make injecting malicious web scripts possible in some cases.
Exploits & references
Proof-of-concept & detection
No public proof-of-concept or detection template is known for this vulnerability.
Advisories & patches
- Advisorywordfence.com
Timeline
CVE published
Severity medium, CVSS 5.4
Record last updated
Sources & licenses
- Vulnerability data
- Wordfence Intelligence. [object Object] Licensed under the CC BY-SA 4.0.
- CVSS / CWE
- National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
- VulnCrest content
- Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.