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Vendor

FluentBit

5 known vulnerabilities.

FluentBit at a glance

Last 12 months
5
Critical · all time
1
Exploited · all time
0
Public exploit · all time
0
New vulnerabilities per month · last 12 months
0 1 1 December 2025: 0 vulnerabilities Dec 2025 January 2026: 0 vulnerabilities February 2026: 0 vulnerabilities March 2026: 0 vulnerabilities Mar April 2026: 0 vulnerabilities May 2026: 0 vulnerabilities June 2026: 0 vulnerabilities Jun July 2026: 0 vulnerabilities August 2026: 0 vulnerabilities September 2026: 0 vulnerabilities Sep October 2026: 0 vulnerabilities November 2026: 0 vulnerabilities
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Products

Fluent Bit 5
All Critical High Medium Low Exploited only Public exploit

5 results · Feed

  • Medium 5.4
    CVE-2025-12978

    CVE-2025-12978

    Fluent Bit in_http, in_splunk, and in_elasticsearch input plugins contain a flaw in the tag_key validation logic that fails to enforce exact key-length matching. This allows crafted inputs where a tag prefix is incorrectly treated as a full match. A remote at…

    FluentBit Fluent Bit
  • Medium 6.5
    CVE-2025-12969

    CVE-2025-12969

    Fluent Bit in_forward input plugin does not properly enforce the security.users authentication mechanism under certain configuration conditions. This allows remote attackers with network access to the Fluent Bit instance exposing the forward input to send una…

    FluentBit Fluent Bit
  • Medium 5.3
    CVE-2025-12972

    CVE-2025-12972

    Fluent Bit out_file plugin does not properly sanitize tag values when deriving output file names. When the File option is omitted, the plugin uses untrusted tag input to construct file paths. This allows attackers with network access to craft tags containing …

    FluentBit Fluent Bit
  • Critical 9.1
    CVE-2025-12977

    CVE-2025-12977

    Fluent Bit in_http, in_splunk, and in_elasticsearch input plugins fail to sanitize tag_key inputs. An attacker with network access or the ability to write records into Splunk or Elasticsearch can supply tag_key values containing special characters such as new…

    FluentBit Fluent Bit
  • High 8.8
    CVE-2025-12970

    CVE-2025-12970

    The extract_name function in Fluent Bit in_docker input plugin copies container names into a fixed size stack buffer without validating length. An attacker who can create containers or control container names, can supply a long name that overflows the buffer,…

    FluentBit Fluent Bit