CVE-2025-29478 Denial of service in n/a
A local attacker can cause a denial of service in Fluent Bit via a flaw in the cfl_list_size function.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-29478?
CVE-2025-29478 is a medium-severity denial of service vulnerability in n/a, published on 7 Apr 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
An issue in fluent-bit v.3.7.2 allows a local attacker to cause a denial of service via the cfl_list_size in cfl_list.h:165.
Weakness: CWE-400
Which versions are affected by CVE-2025-29478?
1 open source package ship an affected version, including fluent-bit. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
fluent-bit Bitnami | All versions | None |
Products include Treasuredata Fluent Bit.
How do I fix CVE-2025-29478?
No fix has been published for CVE-2025-29478 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2025-29478 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-29478 exists.
Other vulnerabilities in n/a
Sources
Also known as AZL-59725, AZL-59733, BIT-fluent-bit-2025-29478, GHSA-57cc-74xg-cqvg.