NVD / CVE Program· CNA Wordfence

CVE-2023-6187: Paid Memberships Pro <= 2.12.3 - Authenticated (Subscriber+) Arbitrary File Upload

Noroxi assessment

Priority: Plan (action score 50/100)

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: 51.2% (FIRST EPSS); higher than 98.9% 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.
No fixed version is recorded, but the references include a patch (commit or PR) link.
Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Add it to your regular patch cycle. See the fix and affected versions sections below.

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

The Paid Memberships Pro plugin for WordPress is vulnerable to arbitrary file uploads due to insufficient file type validation in the 'pmpro_paypalexpress_session_vars_for_user_fields' function in versions up to, and including, 2.12.3. This makes it possible for authenticated attackers with subscriber privileges or above, to upload arbitrary files on the affected site's server which may make remote code execution possible. This can be exploited if 2Checkout (deprecated since version 2.6) or PayPal Express is set as the payment method and a custom user field is added that is only visible at profile, and not visible at checkout according to its settings.

HighCVSS 8.8 · v3.1—No exploit No fix recorded

Published: Nov 17, 2023
Updated: Jun 17, 2026
EPSS: 51.2% · 98th percentile
CWE: CWE-434

Report tools

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Action score

Plan

Add it to your regular patch cycle.

CVSS: 35 / 40 · 8.8 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 15 / 30 · 51.2%

CNA vs NVD score

NVD: 8.8
CNA · Wordfence: 7.5; 1.3 point gap

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

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

Is Paid Memberships Pro – Content Restriction, User Registration, & Paid Subscriptions on your site?

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If any of these changes, we'll tell you in the daily email digest.

Is your version affected? Check it

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.

Vendor	Product	CPE
strangerstudios	paid memberships pro	cpe:2.3:a:strangerstudios:paid_memberships_pro

Affected versions

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

strangerstudios paid memberships proup to 2.12.3 inclusive

Versions reported by the vendor

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

strangerstudios Paid Memberships Pro – Content Restriction, User Registration, & Paid Subscriptions
- up to and including 2.12.3affected · semver

Same product

strangerstudios: all records

Other highest-scoring records for the same primary product.

CVE-2023-23488The Paid Memberships Pro WordPress Plugin, version < 2.9.8, is affected by an unauthenticated SQL injection vulnerability in the 'code'…
67This week
CVE-2021-25114Paid Memberships Pro < 2.6.7 - Unauthenticated Blind SQL Injection
64This week
CVE-2023-0631Paid Memberships Pro < 2.9.12 - Subscriber+ SQL Injection
53Plan

Published before and after this one in the same product

← EarlierCVE-2022-4830Feb 13, 2023 · Paid Memberships Pro < 2.9.9 - Contributor+ Stored XSS via Shortcode
41Plan
← EarlierCVE-2020-36754Oct 20, 2023 · Paid Memberships Pro <= 2.4.2 - Cross-Site Request Forgery Bypass
17Monitor
Later →CVE-2023-6855Jan 11, 2024 · Paid Memberships Pro <= 2.12.5 - Missing Authorization via API
21Monitor

Remediation

Which version to upgrade to

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

No fix version is recorded for this entry. Check the references for vendor advisories.

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.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

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

Credits

All researchers

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

István MártonPatchstack Bug Bounty Programfinder

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.

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Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).