CVE-2026-77754Public exploitNetwork attack vector

Unauthenticated data disclosure via guest-accessible AJAX nonce

Published Aug 26, 2026 · Updated Aug 26, 2026

Sensitive data exposure in Themeum Kirki before 6.0.14 allows remote attackers to read user emails and private WordPress content. The public kirki_get_apis AJAX action accepts a nonce that Kirki prints for guests, then serves selected user, comment, page, and settings endpoints without a capability check. Any remote visitor who can load a Kirki-rendered page can obtain the nonce and disclose registered-user emails, comment-author emails and IP addresses, and non-public content.

CVSS severity5.3
Medium
EPSS probability0.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Sensitive data exposure in Themeum Kirki before 6.0.14 allows remote attackers to read user emails and private WordPress content. The public kirki_get_apis AJAX action accepts a nonce that Kirki prints for guests, then serves selected user, comment, page, and settings endpoints without a capability check. Any remote visitor who can load a Kirki-rendered page can obtain the nonce and disclose registered-user emails, comment-author emails and IP addresses, and non-public content.

The record

CVE
CVE-2026-77754
Published
Aug 26, 2026
Updated
Aug 26, 2026
Vendor
Themeum
Product
Kirki
Classifications
CWE-200, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 26, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 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=0 <6.0.14

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Themeum · Kirkiversion=0 <6.0.14

Published CVSS scores

5.3WPScanCVSS:3.1/AV:N/AC:L/PR:N/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor
T1190Exploit Public-Facing Application

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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