CVE-2020-15694

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

2.33% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 83.0% of scored records. A rank, not a probability.

NVD base score

7.5 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2020-08-14 18:48Z6 YR AGO

Last updated

2024-08-04 13:22Z2 YR AGO

Reserved

2020-07-13

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-20Improper Input ValidationClass

Data version

5.1

Document digest

506406e7863d8e90556aced6c2502ab42fffeeeaa309cbfc8b900454c95e9077

• github.comhttps://github.com/nim-lang/Nim/blob/dc5a40f3f39c6ea672e6dc6aca7f8118a69dda99/lib/pure/httpclient.nim#L241x_refsource_MISC
• nim-lang.orghttps://nim-lang.org/blog/2020/07/30/versions-126-and-108-released.htmlx_refsource_CONFIRM
• www.openwall.com[oss-security] 20210204 [CVE-2020-15693, CVE-2020-15694] Nim - stdlib Httpclient - Header Crlf Injection & Server Response Validationhttp://www.openwall.com/lists/oss-security/2021/02/04/2mailing-listx_refsource_MLIST
• consensys.nethttps://consensys.net/diligence/vulnerabilities/nim-httpclient-header-crlf-injection/x_refsource_MISC