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CVE-2023-39999· NVD / CVE Program· CNA Patchstack

WordPress < 6.3.2 is vulnerable to Broken Access Control

Noroxi assessment

Priority: Monitor (action score 17/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 1.1% (FIRST EPSS); higher than 67.4% of all records.
  • Anyone who can reach it over the internet can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: WordPress.org WordPress 4.1.39, 4.2.36, 4.3.32.

Low priority for now. Upgrade to WordPress.org WordPress 4.1.39, 4.2.36, 4.3.32 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

Exposure of Sensitive Information to an Unauthorized Actor in WordPress from 6.3 through 6.3.1, from 6.2 through 6.2.2, from 6.1 through 6.13, from 6.0 through 6.0.5, from 5.9 through 5.9.7, from 5.8 through 5.8.7, from 5.7 through 5.7.9, from 5.6 through 5.6.11, from 5.5 through 5.5.12, from 5.4 through 5.4.13, from 5.3 through 5.3.15, from 5.2 through 5.2.18, from 5.1 through 5.1.16, from 5.0 through 5.0.19, from 4.9 through 4.9.23, from 4.8 through 4.8.22, from 4.7 through 4.7.26, from 4.6 through 4.6.26, from 4.5 through 4.5.29, from 4.4 through 4.4.30, from 4.3 through 4.3.31, from 4.2 through 4.2.35, from 4.1 through 4.1.38.

MediumCVSS 4.3 · v3.1—No exploit Fix available
Published
Oct 13, 2023
Updated
Oct 5, 2026
EPSS
1.1% · 67th percentile

Report tools

JSON

Action score

17

Monitor

Low priority for now.

CVSS
17 / 40 · 4.3 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 1.1%

CNA vs NVD score

NVD
4.3
CNA · Patchstack
4.3
agree

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Is WordPress on your site?

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Is WordPress on your site?

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
wordpresswordpress
fedoraprojectfedora

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When you'll hear from us

  • when a new CVE affecting this product is published
  • when a record in your stack enters KEV or gets exploit code

One daily email digest (06:00 UTC); connect a webhook for KEV listings and weaponized exploits instantly.

Your free account also gets you

Running WordPress? Scan your site free with WP Lens

  • Stack alerts: add the products and versions you run, get the new CVEs that affect them
  • Uptime monitoring: 1 site, instant email when it goes down
  • Add your domain: subdomains and takeover risk scanned every week (1 domain)
  • 10 scans an hour on the security tools (3 a day without an account), an API key and MCP
  • All your scans in one panel: findings, what changed in the last scan, a report per domain or per client (PDF, share link)
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Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • fedoraproject fedora37
  • fedoraproject fedora38
  • wordpress wordpress4.3 and later · up to 4.3.31 inclusive
  • wordpress wordpress4.4 and later · up to 4.4.30 inclusive
  • wordpress wordpress4.5 and later · up to 4.5.29 inclusive
  • wordpress wordpress4.6 and later · up to 4.6.26 inclusive
  • wordpress wordpress4.7 and later · up to 4.7.26 inclusive
  • wordpress wordpress4.8 and later · up to 4.8.22 inclusive
  • wordpress wordpress4.9 and later · up to 4.9.23 inclusive
  • wordpress wordpress5.0 and later · up to 5.0.19 inclusive
  • wordpress wordpress5.1 and later · up to 5.1.16 inclusive
  • wordpress wordpress5.2 and later · up to 5.2.18 inclusive
  • wordpress wordpress4.1 and later · up to 4.1.38 inclusive
  • wordpress wordpress5.4 and later · up to 5.4.13 inclusive
  • wordpress wordpress5.5 and later · up to 5.5.12 inclusive
  • wordpress wordpress5.6 and later · up to 5.6.11 inclusive
  • wordpress wordpress5.7 and later · up to 5.7.9 inclusive
  • wordpress wordpress5.8 and later · up to 5.8.7 inclusive
  • wordpress wordpress5.9 and later · up to 5.9.7 inclusive
  • wordpress wordpress6.0 and later · up to 6.0.5 inclusive

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Patchstack). Independent of NVD's CPE analysis and usually ahead of it.

  • WordPress.org WordPress

    • 6.3 and later · up to and including 6.3.1affectedfixed in 6.3.2
    • 6.2 and later · up to and including 6.2.2affectedfixed in 6.2.3
    • 6.1 and later · up to and including 6.1.3affectedfixed in 6.1.4
    • 6.0 and later · up to and including 6.0.5affectedfixed in 6.0.6
    • 5.9 and later · up to and including 5.9.7affectedfixed in 5.9.8
    • 5.8 and later · up to and including 5.8.7affectedfixed in 5.8.8
    • 5.7 and later · up to and including 5.7.9affectedfixed in 5.7.10
    • 5.6 and later · up to and including 5.6.11affectedfixed in 5.6.12
    • 5.5 and later · up to and including 5.5.12affectedfixed in 5.5.13
    • 5.4 and later · up to and including 5.4.13affectedfixed in 5.4.14

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:10wordpressbefore 5.0.20+dfsg1-0+deb10u15.0.20+dfsg1-0+deb10u1
Debian:11wordpressbefore 5.7.11+dfsg1-0+deb11u15.7.11+dfsg1-0+deb11u1
Debian:12wordpressbefore 6.1.6+dfsg1-0+deb12u16.1.6+dfsg1-0+deb12u1
Debian:13wordpressbefore 6.3.2+dfsg1-16.3.2+dfsg1-1

Other highest-scoring records for the same primary product.

  • CVE-2026-87902An unauthenticated attacker can make `get_page_template()` page-template resolution include a chosen readable local `.php` file outside the KEV
    74This week
  • CVE-2026-63030WordPress < 7.0.2 - REST API batch-route confusion and SQL injection issue leading to Remote Code ExecutionKEV
    72This week
  • CVE-2026-60137WordPress < 7.0.2 - Facilitated SQL Injection via author__not_in in WP_QueryKEV
    60This week

Published before and after this one in the same product

  • ← EarlierCVE-2023-2745May 17, 2023 · WordPress Core < 6.2.1 - Directory Traversal
    45Plan
  • ← EarlierCVE-2023-38000Oct 13, 2023 · Auth. Stored Cross-Site Scripting (XSS) vulnerability in WordPress core and Gutenberg plugin via Navigation Links Block
    21Monitor
  • Later →CVE-2023-5561Oct 16, 2023 · WordPress < 6.3.2 - Unauthenticated Post Author Email Disclosure
    22Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
WordPress.org WordPress4.1.39Vendor (CNA)
WordPress.org WordPress4.2.36Vendor (CNA)
WordPress.org WordPress4.3.32Vendor (CNA)
WordPress.org WordPress4.4.31Vendor (CNA)
WordPress.org WordPress4.5.30Vendor (CNA)
WordPress.org WordPress4.6.27Vendor (CNA)
WordPress.org WordPress4.7.27Vendor (CNA)
WordPress.org WordPress4.8.23Vendor (CNA)
WordPress.org WordPress4.9.24Vendor (CNA)
WordPress.org WordPress5.0.20Vendor (CNA)
WordPress.org WordPress5.1.17Vendor (CNA)
WordPress.org WordPress5.2.19Vendor (CNA)
WordPress.org WordPress5.3.16Vendor (CNA)
WordPress.org WordPress5.4.14Vendor (CNA)
WordPress.org WordPress5.5.13Vendor (CNA)
WordPress.org WordPress5.6.12Vendor (CNA)
WordPress.org WordPress5.7.10Vendor (CNA)
WordPress.org WordPress5.8.8Vendor (CNA)
WordPress.org WordPress5.9.8Vendor (CNA)
WordPress.org WordPress6.0.6Vendor (CNA)
WordPress.org WordPress6.1.4Vendor (CNA)
WordPress.org WordPress6.2.3Vendor (CNA)
WordPress.org WordPress6.3.2Vendor (CNA)
debian:wordpress6.1.6+dfsg1-0+deb12u1 · Debian:12Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

The product’s vendor appears in a public program. Matched by name; verify the scope text in the program.

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
low · data can be read
Integrity
none
Availability
none
Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
Low
Integrity impact
None
Availability impact
None

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

nvd-primary

Root cause

The extension requests broader permissions than its function needs and sends the data it collects out for purposes beyond its stated function.

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

json
{  "permissions": ["tabs", "<all_urls>"],  "background": { "service_worker": "analytics.js" }}

Fixed

json
{  "permissions": ["activeTab"],  "host_permissions": ["https://yildiz.example/*"]}

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

All records