CVE-2025-29477 json
An issue in fluent-bit v.3.7.2 allows a local attacker to cause a denial of service via the function consume_event.
published 2025-04-04 19 mo ago modified 2026-09-08 2 mo ago also BIT-fluent-bit-2025-29477 , EUVD-2025-9768
- cvss
- 5.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 8%
- public exploits
- 0
- none known
Summary
An issue in fluent-bit v.3.7.2 allows a local attacker to cause a denial of service via the function consume_event.
Vendor advisories
What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
red hat product security vex CVE-2025-29477 updated cvss 6.2
fluent-bit: Use-After-Free in Fluent Bit YAML Config Parser
-
Red Hat All currently supported Red Hat productsnot affected: vulnerable code not present
Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- partial
- Assessed
- 19 mo ago
Exploit prediction
0.18% chance of exploitation in the next 30 days, higher than 8% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/lmarch2/poc/blob/main/fluent-bit/fluent-bit.md referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 5.5 | CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:H |
| CNA | 3.1 | 5.5 | CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:H |
| OSV | 3.1 | 5.5 | CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| bitnami | fluent-bit | all versions |
no fix listed |
Classification
- Weakness
-
- CWE-400 Uncontrolled Resource Consumption
References
Sources
- CVE List CVE-2025-29477
- NVD CVE-2025-29477
- OSV BIT-fluent-bit-2025-29477
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.