CVE-2026-55113Network attack vector

Authentication bypass and DoS via API SSRF

Published Jul 2, 2026 · Updated Jul 2, 2026

SSRF in Ubiquiti UniFi Talk Application before 5.2.2 allows remote attackers to bypass authentication and interrupt service. Certain Talk API endpoints cause the application to issue server-side requests from network-supplied input, but Ubiquiti has not disclosed the endpoints or validation error. Network access and no authentication are required; successful exploitation can bypass endpoint authentication and disrupt the Talk service.

CVSS severity7.5
High
EPSS probability0.37%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SSRF in Ubiquiti UniFi Talk Application before 5.2.2 allows remote attackers to bypass authentication and interrupt service. Certain Talk API endpoints cause the application to issue server-side requests from network-supplied input, but Ubiquiti has not disclosed the endpoints or validation error. Network access and no authentication are required; successful exploitation can bypass endpoint authentication and disrupt the Talk service.

The record

CVE
CVE-2026-55113
Published
Jul 2, 2026
Updated
Jul 2, 2026
Vendor
Ubiquiti Inc.
Product
UniFi Talk Application
Classifications
CWE-918, CAPEC-664
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 2, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 2, 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 <5.2.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Ubiquiti Inc. · UniFi Talk Applicationversion=0 <5.2.2

Published CVSS scores

7.5HackerOneCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A: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-918Server-Side Request Forgery (SSRF)
CAPEC-664Server Side Request Forgery

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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