CVE-2026-65880Network attack vector

Unauthenticated code execution via signature-field processing

Published Jul 28, 2026 · Updated Jul 28, 2026

Code injection in Balbooa Forms 2.4.2.1 and earlier allows remote attackers to execute code through a submitted Signature field. The form-processing component improperly handles structured, user-supplied Signature data because decoding is not explicitly controlled server-side and validation is insufficient. No authentication is required, but only a form containing a Signature field exposes the path; execution occurs in the Joomla site's context.

CVSS severity10.0
Critical
EPSS probability0.46%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Code injection in Balbooa Forms 2.4.2.1 and earlier allows remote attackers to execute code through a submitted Signature field. The form-processing component improperly handles structured, user-supplied Signature data because decoding is not explicitly controlled server-side and validation is insufficient. No authentication is required, but only a form containing a Signature field exposes the path; execution occurs in the Joomla site's context.

The record

CVE
CVE-2026-65880
Published
Jul 28, 2026
Updated
Jul 28, 2026
Vendor
Balbooa
Product
Balbooa Forms
Classifications
CWE-94, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 28, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 28, 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=1.0.0-2.4.2.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Balbooa · Balbooa Formsversion=1.0.0-2.4.2.1

Published CVSS scores

10.0Joomla! ProjectCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

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 exploitUnconfirmed

Weakness, pattern, technique

CWE-94Improper Control of Generation of Code ('Code Injection')
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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