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TI-2026-83512 Aliases CVE-2026-111592GHSA-6x99-gc47-w4j4

Stored cross-site scripting in PublishPress Authors WordPress plugin

Priority LOW 28CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
Low · Low · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

The PublishPress Authors plugin for WordPress is affected through 4.17.0. The name field mapped to display_name is stored without sanitization and output without escaping, causing cross-site scripting (CWE-79). An authenticated attacker with subscriber access or above can store scripts that run when users open affected pages. Exploitation requires the attacker's account to have a mapped author term, which is not present by default for new users on a stock install.

Written with Claude Haiku 5.5 from the sources below · 2026-11-05

Description from the CNA

The Co-Authors, Multiple Authors and Guest Authors in an Author Box with PublishPress Authors plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'name (maps to display_name)' parameter in all versions up to, and including, 4.17.0 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. Exploitation requires the attacker's user account to have a mapped author term, which occurs when an administrator has assigned them as a co-author on content or has enabled automatic author term creation for their role — this mapping is not present by default for new users on a stock install.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00193 9th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
PublishPressCo-Authors, Multiple Authors and Guest Authors in an Author Box with PublishPress Authorsup to 4.17.0—No fix listedCNA
  • Co-Authors, Multiple Authors and Guest Authors in an Author Box with PublishPress Authors VendorPublishPress Affected up to 4.17.0 Fixed in — No fix listed CNA

Remediation

No fixed version is listed for Co-Authors, Multiple Authors and Guest Authors in an Author Box with PublishPress Authors.

Written with Claude Haiku 5.5 from the sources below · 2026-11-05

Timeline

  1. 2026-10-31 Threatist record created from CVE-2026-111592
  2. 2026-10-31 Alias added: GHSA-6x99-gc47-w4j4
  3. 2026-11-01 Priority changed: MEDIUM → LOW
  4. 2026-11-01 CISA SSVC decision points changed

References

Other 5

  • TI-2022-03111 PublishPress Capabilities < 2.5.2 - Admin+ PHP Objection Injection CVSS 3.1HIGH 7.2
  • TI-2021-07310 PublishPress Capabilities < 2.3.1 - Unauthenticated Arbitrary Options Update to Blog Compromise CVSS 3.1CRITICAL 9.8
  • TI-2026-25067 WordPress PublishPress Revisions plugin <= 3.7.23 - SQL Injection vulnerability CVSS 3.1CRITICAL 9.3
  • TI-2024-08551 Authorization bypass in PublishPress Co-Authors, Multiple Authors and Guest Authors in an… CVSS 3.1HIGH 8.8
  • TI-2026-20427 WordPress PublishPress Authors plugin <= 4.10.1 - Broken Access Control vulnerability CVSS 3.1HIGH 7.5
  • TI-2025-30658 WordPress Gutenberg Blocks <= 3.3.1 - Local File Inclusion Vulnerability CVSS 3.1HIGH 7.5
See all 35 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences