CVE-2026-12723Public exploitNetwork attack vector

Unauthenticated comment tampering via unchecked REST route

Published Jul 20, 2026 · Updated Jul 20, 2026

Missing authorization in Kirki before 6.0.12 allows remote attackers to overwrite comments or create approved comments via a REST route. The KirkiComponentLibrary/v1/kirki-comment handler accepts a nonce exposed in public page markup, then updates any supplied comment ID or inserts a comment as approved without an authorization check. A published unauthenticated proof of concept uses no cookies; exploitation can replace existing comment text or bypass moderation with a spoofed author identity.

CVSS severity5.3
Medium
EPSS probability0.34%
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 Kirki before 6.0.12 allows remote attackers to overwrite comments or create approved comments via a REST route. The KirkiComponentLibrary/v1/kirki-comment handler accepts a nonce exposed in public page markup, then updates any supplied comment ID or inserts a comment as approved without an authorization check. A published unauthenticated proof of concept uses no cookies; exploitation can replace existing comment text or bypass moderation with a spoofed author identity.

The record

CVE
CVE-2026-12723
Published
Jul 20, 2026
Updated
Jul 20, 2026
Vendor
Themeum
Product
Kirki
Classifications
CWE-862, T1565.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 20, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 20, 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 <6.0.12

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Themeum · Kirkiversion=0 <6.0.12

Published CVSS scores

5.3CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/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-862Missing Authorization
T1565.001Stored Data Manipulation

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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