CVE-2026-10820Public exploitNetwork attack vector

Subscription cancellation via unchecked subscription ownership

Published Jun 27, 2026 · Updated Jun 27, 2026

Authorization bypass in Proper Fraction ProfilePress before 4.16.17 allows remote authenticated users to cancel other users' subscriptions. The membership subscription-action handler accepts a sequential subscription ID and attacker-mintable nonce without confirming that the subscription belongs to the acting account. Subscriber access is sufficient; cancellation can remove a lifetime member's role and propagate to a connected payment gateway.

CVSS severity8.1
High
EPSS probability0.38%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authorization bypass in Proper Fraction ProfilePress before 4.16.17 allows remote authenticated users to cancel other users' subscriptions. The membership subscription-action handler accepts a sequential subscription ID and attacker-mintable nonce without confirming that the subscription belongs to the acting account. Subscriber access is sufficient; cancellation can remove a lifetime member's role and propagate to a connected payment gateway.

The record

CVE
CVE-2026-10820
Published
Jun 27, 2026
Updated
Jun 27, 2026
Vendor
ProfilePress Membership Team
Product
ProfilePress
Classifications
CWE-639, T1531
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 27, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 27, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <4.16.17

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

ProfilePress Membership Team · ProfilePressversion=0 <4.16.17

Published CVSS scores

8.1WPScanCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-639Authorization Bypass Through User-Controlled Key
T1531Account Access Removal

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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