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The vulnerability of the tag_key validation mechanism in the Fluent Bit log collection and processing tool allows a perpetrator to influence the integrity and accessibility of the protected information.
🗓️ 09 Dec 2025 00:00:00Reported by FSTEC of Russia — Information Security Threat DatabaseType 
bdu_fstec🔗 bdu.fstec.ru👁 1 Views
| Reporter | Title | Published | Views | Family All 15 |
|---|---|---|---|---|
 | CVE-2025-12978 | 25 Nov 202512:05 | – | circl |
 | Fluent Bit 安全漏洞 | 24 Nov 202500:00 | – | cnnvd |
 | CVE-2025-12978 | 24 Nov 202514:42 | – | cve |
 | CVE-2025-12978 CVE-2025-12978 | 24 Nov 202514:42 | – | cvelist |
 | EUVD-2025-198807 | 24 Nov 202515:30 | – | euvd |
 | Fluent Bit < 4.0.12 / 4.1.x < 4.1.1 Multiple Vulnerabilities | 1 Dec 202500:00 | – | nessus |
 | CVE-2025-12978 | 24 Nov 202515:15 | – | nvd |
 | BIT-FLUENT-BIT-2025-12978 CVE-2025-12978 | 1 Dec 202520:38 | – | osv |
 | PT-2025-47924 | 24 Nov 202500:00 | – | ptsecurity |
 | CVE-2025-12978 | 25 Nov 202515:08 | – | redhatcve |
10
Node
| Source | Link |
|---|---|
| fluentbit | www.fluentbit.io/announcements/v4.1.0/ |
| redos | www.redos.red-soft.ru/search/ |
| web | www.web.nvd.nist.gov/view/vuln/detail |
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08 Apr 2026 00:00Current
6.1Medium risk
Vulners AI Score6.1
CVSS 35.4
CVSS 25.5
EPSS0.00341