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CVE-2025-12978

🗓️ 24 Nov 2025 14:42:06Reported by certccType 
cve
 cve
🔗 web.nvd.nist.gov👁 44 Views

Fluent Bit tag_key validation flaw lets tag prefixes be treated as matches, enabling tag manipulation and record routing by remote attackers.

Related
Detection
Affected
Refs
ReporterTitlePublishedViews
Family
bdu_fstec
BDU FSTEC
Fluent Bit tag_key validation Data Compromise
9 Dec 202500:00
–bdu_fstec
circl
Circl
CVE-2025-12978
25 Nov 202512:05
–circl
cnnvd
CNNVD
Fluent Bit security vulnerabilities
24 Nov 202500:00
–cnnvd
cvelist
Cvelist
CVE-2025-12978 CVE-2025-12978
24 Nov 202514:42
–cvelist
euvd
EUVD
EUVD-2025-198807
24 Nov 202515:30
–euvd
nessus
Tenable Nessus
Fluent Bit < 4.0.12 / 4.1.x < 4.1.1 Multiple Vulnerabilities
1 Dec 202500:00
–nessus
mend
Mend
CVE-2025-12978
24 Nov 202514:42
–mend
nvd
NVD
CVE-2025-12978
24 Nov 202515:15
–nvd
osv_bit
osv_bit
BIT-FLUENT-BIT-2025-12978 CVE-2025-12978
1 Dec 202520:38
–osv_bit
ptsecurity
Positive Technologies
PT-2025-47924
24 Sep 202500:00
–ptsecurity
Rows per page
NVD
Vulners
[
  {
    "vendor": "FluentBit",
    "product": "Fluent Bit",
    "versions": [
      {
        "status": "affected",
        "version": "0",
        "lessThan": "4.0.12",
        "versionType": "custom"
      }
    ]
  }
]

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08 Oct 2026 10:10Current
6.2Medium risk
Vulners AI Score6.2
CVSS 3.15.4
EPSS0.00393
SSVC
44