CVE-2026-36537Disclosure

LOWCVSS 9.8 · CRITICAL

Signal is active with 1 mentions in latest observed window

Immediate actions

Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

ThingsBoard v4.3.0.1 is vulnerable to an authentication bypass during the OAuth authorization code exchange. The application improperly trusts user-supplied identity data within the user parameter of the /login/oauth2/code/ endpoint. By manipulating the email address in this JSON object, a remote attacker can bypass authentication and gain full access to any existing user account on the platform without possessing the target user's credentials. This results in a complete account takeover.

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0.0/ 10 priority

Sources & remediation

Other references

Weakness type (CWE)

CWE-290

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Threat summary

1 mentions across 1 observed day

What's happening

Technical details provided in 1 signal
Disclosure: 1 classified signal
1 total mentions across 1 day

Deep dive

Activity timeline1 mentions / 1d

Signal classification1 categories

Disclosure

1100.0%

Referenced assets3 URLs

By indicator

Full discourse1 post

FOFA@fofabot137d
Disclosure
⚠️⚠️ CVE-2026-36537 (CVSS 9.8): OAuth authorization code exchange auth bypass in ThingsBoard v4.3.0.1. 🔗FOFA Link: https://en.fofa.info/result?qbase64=YXBwPSJUaGluZ3NCb2FyZCI%3D 🎯14K+ Results are found on http://en.fofa.info in the past year. FOFA Query: app="ThingsBoard" 🔖Refer: https://nvd.nist.gov/vuln/detail/CVE-2026-36537 #OSINT #FOFA #CyberSecurity #Vulnerability
Post summary
This post announces the CVE‑2026‑36537 (OAuth authorization code exchange auth bypass in ThingsBoard v4.3.0.1) and shares FOFA search results showing many potential affected instances, but it provides no evidence of exploitation, a PoC, or a patch.
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