CVE-2021-38621
CVE-2021-38621 is a critical-severity vulnerability in Netless Flat Server with a CVSS 3.x base score of 9.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.
Key facts
- Severity: Critical (CVSS 3.x base score 9.1)
- CVSS v2: 6.4
- EPSS exploit prediction: 1% (58th percentile)
- Actively exploited: Not listed in CISA KEV
- Affected product: Netless Flat Server
- Published:
- Last modified:
Description
The remove API in v1/controller/cloudStorage/alibabaCloud/remove/index.ts in netless Agora Flat Server before 2021-07-30 mishandles file ownership.
Frequently asked questions
- What is CVE-2021-38621?
- The remove API in v1/controller/cloudStorage/alibabaCloud/remove/index.ts in netless Agora Flat Server before 2021-07-30 mishandles file ownership.
- How severe is CVE-2021-38621?
- CVE-2021-38621 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
- Is CVE-2021-38621 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (58th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-38621?
- CVE-2021-38621 affects Netless Flat Server. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2021-38621?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- When was CVE-2021-38621 published?
- CVE-2021-38621 was published on 2021-08-13 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:netless:flat_server:*:*:*:*:*:node.js:*:*