CVE-2026-57321Network attack vector

Contributor file deletion via path traversal

Published Jun 26, 2026 · Updated Jun 26, 2026

Path traversal in H5P WordPress Plugin 1.17.7 and earlier allows remote authenticated users to delete arbitrary server files. H5P ties the flaw to file-ignore patterns during content storage but does not disclose the vulnerable function or exact path-validation error. Contributor-level access is required; arbitrary deletion can break or stop the WordPress site, with no reported confidentiality impact.

CVSS severity7.1
High
EPSS probability0.41%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in H5P WordPress Plugin 1.17.7 and earlier allows remote authenticated users to delete arbitrary server files. H5P ties the flaw to file-ignore patterns during content storage but does not disclose the vulnerable function or exact path-validation error. Contributor-level access is required; arbitrary deletion can break or stop the WordPress site, with no reported confidentiality impact.

The record

CVE
CVE-2026-57321
Published
Jun 26, 2026
Updated
Jun 26, 2026
Vendor
H5P Group
Product
H5P WordPress Plugin
Classifications
CWE-22, CAPEC-126, T1485
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 26, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 26, 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=n/a <=1.17.7 changes=[{"at":"1.17.8","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

H5P Group · H5P WordPress Pluginversion=n/a <=1.17.7 changes=[{"at":"1.17.8","status":"unaffected"}]

Published CVSS scores

7.1PatchstackCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CAPEC-126Path Traversal
T1485Data Destruction

Public exploit references

No public exploit references are available in this record.

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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