CVE-2026-54220Network attack vector

Unintended authenticated actions via missing CSRF protections

Published Jun 18, 2026 · Updated Jun 18, 2026

Cross-site request forgery in UBB Systems UBB.threads 7.7.5 and earlier allows attackers to make authenticated users perform unintended actions. CERT Polska reports missing CSRF protections but does not identify the affected request handlers, state-changing operations, or omitted validation. Exploitation requires an authenticated user to submit an attacker-controlled request; the specific actions and privilege-dependent impact remain undisclosed.

CVSS severity8.6
High
EPSS probability0.19%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site request forgery in UBB Systems UBB.threads 7.7.5 and earlier allows attackers to make authenticated users perform unintended actions. CERT Polska reports missing CSRF protections but does not identify the affected request handlers, state-changing operations, or omitted validation. Exploitation requires an authenticated user to submit an attacker-controlled request; the specific actions and privilege-dependent impact remain undisclosed.

The record

CVE
CVE-2026-54220
Published
Jun 18, 2026
Updated
Jun 18, 2026
Vendor
UBB Systems, LLC
Product
UBB.threads
Classifications
CWE-352
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 18, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 18, 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 <=7.7.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

UBB Systems, LLC · UBB.threadsversion=0 <=7.7.5

Published CVSS scores

8.6CERT.PLCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:L/SC:N/SI:N/SA: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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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-352Cross-Site Request Forgery (CSRF)

Public exploit references

No public exploit references are available in this record.

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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