CVE-2025-34282

published 2025-10-17

CVE-2025-34282: ThingsBoard versions < 4.2.1 contain a server-side request forgery (SSRF) vulnerability in the dashboard's Image Upload Gallery feature. An attacker can upload…

Priority P2 68 critical 9.1 CVSS 3.1

AV N AC L PR N UI N S U C H I H A N

EXPLOIT

ThingsBoard versions < 4.2.1 contain a server-side request forgery (SSRF) vulnerability in the dashboard's Image Upload Gallery feature. An attacker can upload a malicious SVG file that references a remote URL. If the server processes the SVG file in a way that parses external references, it may initiate unintended outbound requests. This can be used to access internal services or resources.

Affected

2 ranges

Vendor	Product	Version range	Fixed in
thingsboard	thingsboard	< 4.2.1	4.2.1
thingsboard_inc	thingsboard	< 4.2.1	4.2.1

Detection & IOCs extracted from sources · hover to see the quote

url http://localhost:8080/api/image↗

url http://localhost:8080/api/widgetType↗

path /api/image↗

path /api/widgetType↗

path /resources/images↗

• → Monitor for multipart file uploads of SVG files (MIME type image/svg+xml) to the ThingsBoard /api/image endpoint, especially from authenticated Tenant Admin sessions. ↗
• → Inspect SVG files uploaded to ThingsBoard for external URL references (e.g., <image href=...> or <use xlink:href=...> tags pointing to internal network addresses), which are the SSRF trigger mechanism. ↗
• → Flag requests to /api/image and /api/widgetType that include the X-Authorization Bearer token header combined with SVG content uploads — this matches the exploit's two-step attack chain. ↗

• · Affected versions are ThingsBoard < 4.2.1; version 4.2.0 is confirmed vulnerable. Ensure patched version is deployed. ↗

CVSS provenance

nvd v3.1 9.1 CRITICAL CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

nvd v4.0 6.9 MEDIUM CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

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