CVE-2026-16274Public exploitNetwork attack vector

Contributor-level post disclosure via unchecked AJAX handler

Published Aug 3, 2026 · Updated Aug 3, 2026

Missing authorization in RadiusTheme Classified Listing before 5.4.4 allows remote authenticated users to read unpublished post content. The rtcl_block_css_get_posts AJAX action returns content for an attacker-supplied postId after validating only a nonce, without a capability or ownership check. Contributor-level access exposes drafts, pending posts, private posts, pages, and custom post types owned by other users, but does not grant content modification.

CVSS severity2.7
Low
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authorization in RadiusTheme Classified Listing before 5.4.4 allows remote authenticated users to read unpublished post content. The rtcl_block_css_get_posts AJAX action returns content for an attacker-supplied postId after validating only a nonce, without a capability or ownership check. Contributor-level access exposes drafts, pending posts, private posts, pages, and custom post types owned by other users, but does not grant content modification.

The record

CVE
CVE-2026-16274
Published
Aug 3, 2026
Updated
Aug 3, 2026
Vendor
RadiusTheme
Product
Classified Listing
Classifications
CWE-862
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 3, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 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=0 <5.4.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

RadiusTheme · Classified Listingversion=0 <5.4.4

Published CVSS scores

2.7WPScanCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N

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.

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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 exploitPublished

Weakness, pattern, technique

CWE-862Missing Authorization

Public exploit references

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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