6.5

CVE-2026-12688: ProfileGrid < 5.9.9.7 - Unauthenticated Payment Bypass and Forced Group Membership via PayPal IPN Forgery

Deferred
Published 24-07-2026Last modified 24-07-2026

Vulnerability summary

CVE-2026-12688 is a medium (CVSS 6.5) Improper Access Control vulnerability in unknown profilegrid. EPSS estimates a 0.27% chance of exploitation in the next 30 days, higher than 18.8% of scored vulnerabilities. 1 public exploit is recorded. Fixed in 5.9.9.7.

Overall risk
36/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.5/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.27%
0%100%
Low · +0.11 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits1reference

Timeline

  1. 24-07-2026
    PublishedVulnerability first disclosed.
  2. 24-07-2026
    Last modifiedVulnerability information updated.

Description

The ProfileGrid WordPress plugin before 5.9.9.7 does not verify PayPal IPN notifications before granting paid group membership, allowing unauthenticated attackers to forge a payment notification and mark any user as a paid member of any group without any payment being made.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.27%

Chance of exploitation in the next 30 days

Percentile

19%

Versus all other CVEs

30-day change

Increase +0.11 pp

From 0.16% on 22-09-2026

22-09-202622-10-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (wpscan.com)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Unknown1 product
Wordpress1 product
  • profilegrid-user-profiles-groups-and-communities≤ 5.9.9.6 (fixed in 5.9.9.7)

2 vendors · 2 products

References

2 links