EUVD-2025-198811

Fluent Bit inhttp, insplunk, and inelasticsearch input plugins fail to sanitize tagkey inputs. An attacker with network access or the ability to write records into Splunk or Elasticsearch can supply tagkey values containing special characters such as newlines or ../ that are treated as valid tags...

AZL-71102 CVE-2025-12977 affecting package fluent-bit for versions less than 3.1.10-4

Fluent Bit inhttp, insplunk, and inelasticsearch input plugins fail to sanitize tagkey inputs. An attacker with network access or the ability to write records into Splunk or Elasticsearch can supply tagkey values containing special characters such as newlines or ../ that are treated as valid tags...

CVE-2025-12978 CVE-2025-12978

Fluent Bit inhttp, insplunk, and inelasticsearch input plugins contain a flaw in the tagkey 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 attacker with authenticated or exposed acces...

CVE-2025-12977

Fluent Bit vulnerability CVE-2025-12977 affects the in_http, in_splunk, and in_elasticsearch input plugins. The root cause is improper sanitization of tag_key inputs, allowing special characters (e.g., newlines, ../) to be treated as valid tags. This can lead to newline injection, path traversal,...

CVE-2025-12977 CVE-2025-12977

Fluent Bit inhttp, insplunk, and inelasticsearch input plugins fail to sanitize tagkey inputs. An attacker with network access or the ability to write records into Splunk or Elasticsearch can supply tagkey values containing special characters such as newlines or ../ that are treated as valid tags...