CVE-2020-15690
9.8
CRITICAL · CVSS 3.1 · EPSS 3.2% (pctl 88)
In your normal cycle
Critical by CVSS (9.8), but no sign of active exploitation.
Description
In Nim before 1.2.6, the standard library asyncftpclient lacks a check for whether a message contains a newline character.
Scoring
| CVSS | 9.8 (CRITICAL, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 3.18% — more likely to be exploited than 88% of all CVEs |
| Weakness | CWE-74 |
| On CISA KEV | no |
| Public exploit | none known |
| Published | 2021-01-30 |
| Last modified | 2026-06-17 |
Affected (1)
| Vendor | Product |
|---|---|
| nim-lang | nim |
References
- http://www.openwall.com/lists/oss-security/2021/02/04/3
- https://consensys.net/diligence/vulnerabilities/nim-asyncftpd-crlf-injection/
- https://github.com/nim-lang/Nim/blob/dc5a40f3f39c6ea672e6dc6aca7f8118a69dda99/lib/pure/asyncftpclient.nim#L145
- https://github.com/nim-lang/Nim/compare/v1.2.4...v1.2.6
- https://github.com/tintinweb/pub/tree/master/pocs/cve-2020-15690
- http://www.openwall.com/lists/oss-security/2021/02/04/3
- https://consensys.net/diligence/vulnerabilities/nim-asyncftpd-crlf-injection/
- https://github.com/nim-lang/Nim/blob/dc5a40f3f39c6ea672e6dc6aca7f8118a69dda99/lib/pure/asyncftpclient.nim#L145
- https://github.com/nim-lang/Nim/compare/v1.2.4...v1.2.6
- https://github.com/tintinweb/pub/tree/master/pocs/cve-2020-15690
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