CVE-2026-27365Network attack vector

Stored XSS via unescaped admin column

Published Aug 18, 2026 · Updated Aug 19, 2026

Stored XSS in orgSeries-admin.php in PublishPress Series before 2.17.1 allows remote authenticated users to execute script via a crafted series name. The orgSeries_custom_column_action function builds HTML for the admin post-list series column and inserts the stored series name, part number, and edit link into anchor markup without output escaping. Exploitation requires high-privilege access to create or rename a series and a victim to open the affected WordPress admin listing, limiting impact to browser-side execution in that user's session.

CVSS severity5.9
Medium
EPSS probability0.14%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in orgSeries-admin.php in PublishPress Series before 2.17.1 allows remote authenticated users to execute script via a crafted series name. The orgSeries_custom_column_action function builds HTML for the admin post-list series column and inserts the stored series name, part number, and edit link into anchor markup without output escaping. Exploitation requires high-privilege access to create or rename a series and a victim to open the affected WordPress admin listing, limiting impact to browser-side execution in that user's session.

The record

CVE
CVE-2026-27365
Published
Aug 18, 2026
Updated
Aug 19, 2026
Vendor
PublishPress
Product
PublishPress Series
Classifications
CWE-79, CAPEC-592, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 18, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 19, 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 <=2.17.0 changes=[{"at":"2.17.1","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

PublishPress · PublishPress Seriesversion=n/a <=2.17.0 changes=[{"at":"2.17.1","status":"unaffected"}]

Published CVSS scores

5.9PatchstackCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:L

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 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 exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CAPEC-592Stored XSS
T1059.007JavaScript

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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