CVE-2025-34282Public exploitNetwork attack vector

Authenticated SSRF via external SVG references

Published Oct 17, 2025 · Updated Oct 17, 2025

SSRF in ThingsBoard before 4.2.1 allows remote authenticated users to access internal services through crafted SVG image uploads. The Image Upload Gallery accepts an SVG whose xlink:href names an attacker-chosen URL, and server-side processing fetches that external reference. A Tenant Administrator bearer token and widget creation are required; the resulting requests can reach services unavailable from the attacker's network.

CVSS severity6.9
Medium
EPSS probability1.70%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SSRF in ThingsBoard before 4.2.1 allows remote authenticated users to access internal services through crafted SVG image uploads. The Image Upload Gallery accepts an SVG whose xlink:href names an attacker-chosen URL, and server-side processing fetches that external reference. A Tenant Administrator bearer token and widget creation are required; the resulting requests can reach services unavailable from the attacker's network.

The record

CVE
CVE-2025-34282
Published
Oct 17, 2025
Updated
Oct 17, 2025
Vendor
ThingsBoard
Product
ThingsBoard
Classifications
CWE-918, CAPEC-664, T1190
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Oct 17, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 17, 2025Record 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 <4.2.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

ThingsBoard · ThingsBoardversion=0 <4.2.1

Published CVSS scores

9.1NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
6.9VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:L/SI:L/SA:L

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-918Server-Side Request Forgery (SSRF)
CAPEC-664Server Side Request Forgery
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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