CVE-2020-21514 Fluent Fluentd and Fluent-ui use default password
Attackers can gain escalated privileges and execute arbitrary code in Fluent-ui due to a default password.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2020-21514?
CVE-2020-21514 is a high-severity vulnerability in n/a, published on 4 Apr 2023. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
An issue was discovered in Fluent-ui v.1.2.2 allows attackers to gain escalated privileges and execute arbitrary code due to a default password.
Weakness: CWE-276
Which versions are affected by CVE-2020-21514?
3 open source packages ship an affected version, including fluentd-ui and fluentd. It affects 2 products.
| Package | Affected | Fixed in |
|---|---|---|
fluentd-ui RubyGems | All versions to 1.2.2 | None |
fluentd-ui RubyGems | All versions to 1.2.2 | None |
fluentd Bitnami | From 1.8.0 | 1.8.1 |
Products include Fluentd Fluentd, Fluentd Fluentd-Ui.
How do I fix CVE-2020-21514?
Apply the vendor's patch.
Is CVE-2020-21514 being exploited?
There is no known exploitation of CVE-2020-21514 in the wild and no public exploit code.
Other vulnerabilities in n/a
- CVE-2026-44024 Fluentd: Remote Code Execution (RCE) via Arbitrary File Write in `${tag}` Placeholder
- CVE-2017-10906 Fluentd Escape Sequence Injection Vulnerability
- CVE-2026-44025 Fluentd: Exposure of Sensitive Information via Monitor Agent API
- CVE-2026-44160 Fluentd: Denial of Service (DoS) via Gzip Decompression Bomb in `in_http` and `in_forward`
- CVE-2026-44161 Fluentd: Server-Side Request Forgery (SSRF) via Placeholder Expansion in `out_http`
Sources
Also known as BIT-fluentd-2020-21514, GHSA-wrxf-x8rm-6ggg.