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In Fluent Bit 2.1.8 through 2.2.1 a NULL pointer dereference can be caused via an invalid HTTP payload with the content type of x-www-form-urlencoded. It crashes and does not restart. This could result in logs not being delivered properly.

🗓️ 01 Apr 2024 07:00:00Reported by MicrosoftType 
mscve
 mscve
🔗 msrc.microsoft.com👁 1 Views

Fluent Bit 2.1.8–2.2.1 has a NULL pointer dereference from invalid HTTP payload with x-www-form-urlencoded, causing a crash.

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18 Feb 2026 10:09Current
7High risk
Vulners AI Score7
CVSS 3.17.5
EPSS0.00879
SSVC
1