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VulnerabilityPublished Updated

CVE-2026-15038: InfiniteWP Client (WordPress plugin) · Improper Authentication

Affects InfiniteWP Client (WordPress plugin)Source CVE Database V5

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Not known to be exploited · CVSS 9.8 Critical : upgrade to 1.13.6 as a priority.

Data as of 9 Nov 2026, 23:24 UTC

CVSS 3.1 base score
9.8Critical
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.7% chance of exploitation in 30 days – higher than 55% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 1.13.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 9 Aug 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: evidence found.

    Public exploit code: GitHub proofs of concept

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), GitHub proofs of concept, the Metasploit, Exploit-DB and nuclei-templates index as of 9 Nov 2026.

What to do

Upgrade InfiniteWP Client (WordPress plugin) to 1.13.6.

Affected software

ProductAffectedFixed in
InfiniteWP ClientAffected
  • <1.13.6
Fixed in
  • 1.13.6

AI-suggested

If you cannot patch yet, restrict access to the remote-management endpoint and monitor for suspicious activity. Avoid exposing the management interface to untrusted networks.

Description

The InfiniteWP Client WordPress plugin before 1.13.6 does not properly verify the site-connection state and the authenticity of requests to its remote-management endpoint on WordPress Multisite installations, allowing unauthenticated attackers to bind their own key, hijack an administrator session, and take over the entire network, leading to remote code execution.

References

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