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Not in CISA KEV
HIGH severity

GHSA-m6j4-8r7p-wpp3 buddypress/buddypress

HIGH

GHSA-m6j4-8r7p-wpp3 is a high-severity (CVSS 8.1) CWE-863 vulnerability in buddypress/buddypress. 2 public exploit references exist, so weaponization risk is real. A fix is available for buddypress/buddypress — see the affected versions and patch details below.

BuddyPress privilege escalation via REST API

Also known asCVE-2021-21389
Published
Oct 6, 2021
Updated
Jul 8, 2026
Affected
1 pkg
Patched
1 / 1
Exploits
2 known
Exploitation data as of Sep 19, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
13.5%probability of exploitation in next 30 days
Moderate Risk0.00%
Lower risk than most CVEs96th percentile — riskier than 96% of all scored CVEsHighest risk

EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.

How urgent is this, really

GHSA-m6j4-8r7p-wpp3 plotted by exploitation likelihood (EPSS) against impact (CVSS). The shaded corner — EPSS 50%+ and CVSS 7.0+ — is where this CVE doesn't sit, though severity or exploitability alone can still warrant action.

Where this sits among everything scored

Of 377,166 CVEs with a current EPSS score, this one falls in the 10–50% band (highlighted). Real counts from FIRST.org, not a sample — log-scaled since the landscape is heavily right-skewed.

Real-World Exposure

1 pkg affected
🐘buddypress/buddypress

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Packagist packages — download data is not available via public APIs for these ecosystems.

Description

Impact

It's possible for a non-privileged, regular user to obtain administrator rights by exploiting an issue in the BuddyPress REST API members endpoint.

Patches

The vulnerability has been fixed in BuddyPress 7.2.1. Existing installations of the plugin should be updated to this version to mitigate the issue.

References

https://buddypress.org/2021/03/buddypress-7-2-1-security-release/

For more information

If you have any questions or comments about this advisory:

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🐘Packagistbuddypress/buddypress5.0.0&&< 7.2.17.2.1composer require buddypress/buddypress:^7.2.1
Exploits & PoCs
2

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

Detection & mitigation playbook

Open-source dependency
  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for buddypress/buddypress, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update buddypress/buddypress to 7.2.1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-m6j4-8r7p-wpp3 is resolved across your whole dependency graph.

  3. Workarounds

    If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

  4. How O3 protects you

    O3 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like GHSA-m6j4-8r7p-wpp3 can be triaged on real exposure rather than presence alone.

Tailored to GHSA-m6j4-8r7p-wpp3. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

How to detect GHSA-m6j4-8r7p-wpp3

A community-maintained Nuclei template exists for this CVE. You can scan for it directly:

nuclei -id ghsa-m6j4-8r7p-wpp3 -u https://target
Template
BuddyPress REST API <7.2.1 - Privilege Escalation/Remote Code Execution
Severity
high
Impact
Successful exploitation of this vulnerability could allow an attacker to gain unauthorized access to sensitive information, escalate privileges, or execute arbitrary code on the affected system.
Remediation
This issue has been remediated in WordPress BuddyPress 7.2.1.

Template by ProjectDiscovery nuclei-templates (lotusdll), MIT licensed. View the full template. Scan only systems you are authorised to test.

Frequently Asked Questions

### Impact It's possible for a non-privileged, regular user to obtain administrator rights by exploiting an issue in the BuddyPress REST API members endpoint. ### Patches The vulnerability has been fixed in BuddyPress 7.2.1. Existing installations of the plugin should be updated to this version to mitigate the issue. ### References https://buddypress.org/2021/03/buddypress-7-2-1-security-release/ ### For more information If you have any questions or comments about this advisory: * Open an issue in [HackerOne](https://hackerone.com/wordpress)
O3 Security · Impact-Aware SCA

Is GHSA-m6j4-8r7p-wpp3 in your dependencies?

O3 Security finds GHSA-m6j4-8r7p-wpp3 across Packagist dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.

GHSA-m6j4-8r7p-wpp3: High 8.1 severity | O3 Security