CVE-2020-21574 json
Buffer overflow vulnerability in YotsuyaNight c-http v0.1.0, allows attackers to cause a denial of service via a long url request which is…
published 2021-11-02 5 y ago modified 2026-06-17 4 mo ago also EUVD-2020-14342
- cvss
- 7.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.0%
- EPSS 1.0% chance of exploitation in 30 days, percentile 62%
- public exploits
- 0
- none known
Summary
Buffer overflow vulnerability in YotsuyaNight c-http v0.1.0, allows attackers to cause a denial of service via a long url request which is passed to the delimitedread function.
Exploit prediction
0.98% chance of exploitation in the next 30 days, higher than 62% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/YotsuyaNight/c-http/issues/1 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:N/I:N/A:P |
Classification
- Weakness
-
- CWE-120 Buffer Copy without Checking Size of Input
References
-
github.com
/YotsuyaNight/c-http/issues/1
exploit, issue-tracking, third-party-advisory
Sources
- CVE List CVE-2020-21574
- NVD CVE-2020-21574
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.