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...

EUVD-2025-198807

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...

EUVD-2025-198810

Fluent Bit outfile 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 path traversal sequences that cause...

CVE-2025-12972

Fluent Bit outfile 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 path traversal sequences that cause...

AZL-71080 CVE-2025-12977 affecting package fluent-bit for versions less than 3.0.6-6

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-2025-12977

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...

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...

New Fluent Bit Flaws Expose Cloud to RCE and Stealthy Infrastructure Intrusions

Cybersecurity researchers have discovered five vulnerabilities in Fluent Bit, an open-source and lightweight telemetry agent, that could be chained to compromise and take over cloud infrastructures. The security defects "allow attackers to bypass authentication, perform path traversal, achieve...

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-2025-12978 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-2025-12978

Fluent Bit’s input plugins in_http, in_splunk, and in_elasticsearch have a flaw in tag_key validation that does not enforce exact key-length matching. This lets crafted tag prefixes be treated as full matches, enabling a remote attacker with access to those endpoints to manipulate tags and redire...

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-2025-12972 CVE-2025-12972

Fluent Bit outfile 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 path traversal sequences that cause...

CVE-2025-12972

CVE-2025-12972 affects Fluent Bit, specifically the out_file plugin. When the File option is omitted, untrusted tag input is used to build output file paths, and tags containing path traversal sequences can cause files to be written outside the intended directory. This may enable unauthorized fil...

CVE-2025-12972 CVE-2025-12972

Fluent Bit outfile 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 path traversal sequences that cause...

CVE-2025-12972 CVE-2025-12972

Fluent Bit outfile 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 path traversal sequences that cause...

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...

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...