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TI-2026-01776 Aliases CVE-2026-2126GHSA-pm8v-w3f2-2hxx

Incorrect authorization in specialk User Submitted Posts – Enable Users to Submit Posts…

Priority LOW 30CWE-863Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
None · Low · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-863.

Summary

The User Submitted Posts – Enable Users to Submit Posts from the Front End plugin for WordPress is vulnerable to Incorrect Authorization in all versions up to, and including, 20260113. This is due to the `usp_get_submitted_category()` function accepting user-submitted category IDs from the POST body without validating them against the admin-configured allowed categories stored in `usp_options['categories']`. This makes it possible for unauthenticated attackers to assign submitted posts to arbitrary categories, including restricted ones, by crafting a direct POST request with manipulated `user-submitted-category[]` values, bypassing the frontend category restrictions.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00392 33rd 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
Yes
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
specialkUser Submitted Posts – Enable Users to Submit Posts from the Front Endup to 20260113—No fix listedCNA
  • User Submitted Posts – Enable Users to Submit Posts from the Front End Vendorspecialk Affected up to 20260113 Fixed in — No fix listed CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:plugin-planet:user_submitted_posts:*:*:*:*:*:*:*:*——specialk
  • cpe:2.3:a:plugin-planet:user_submitted_posts:*:*:*:*:*:*:*:* Versions — — ·specialk

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-2126
  2. 2026-10-03 Alias added: GHSA-pm8v-w3f2-2hxx

References

Other 4

  • TI-2024-01845 Simple Ajax Chat < 20240223 - Unauthenticated Stored XSS CVSS 3.1HIGH 7.1
  • TI-2024-02296 Simple Ajax Chat < 20240412 - Admin+ Stored XSS CVSS 3.1MEDIUM 5.4
  • TI-2024-04645 User Submitted Posts < 20240516 - Admin+ Stored XSS CVSS 3.1MEDIUM 4.8
  • TI-2019-15241 User Submitted Posts <= 20190312 - Unauthenticated Arbitrary File Upload CVSS 3.1CRITICAL 9.8
  • TI-2022-10732 WordPress Simple Ajax Chat plugin <= 20220115 - Sensitive Information Disclosure vulnerability CVSS 3.1HIGH 7.5
  • TI-2023-24406 WordPress User Submitted Posts Plugin <= 20230902 is vulnerable to Arbitrary File Upload CVSS 3.1CRITICAL 9.8
See all 44 →

Sources

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