HIGH

CVE-2020-15694

CVSS v3

7.5

HIGH

EPSS Score

2.3 %

exploit probability, as of 2026-10-19

CISA KEV

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Vendor advisories

CVE-2020-15694 Red Hat Product Security
nim: standard library httpClient fails to properly validate the server response

Full record on NVD

Description

In Nim 1.2.4, the standard library httpClient fails to properly validate the server response. For example, httpClient.get().contentLength() does not raise any error if a malicious server provides a negative Content-Length.

Technical details

Published: 2020-08-14

Frequently asked questions

What is CVE-2020-15694?

Is CVE-2020-15694 actively exploited?

Active exploitation of CVE-2020-15694 has not been confirmed. Its EPSS score was 2.3% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2020-15694?

CVE-2020-15694 has a CVSS v3 base score of 7.5 (HIGH severity).

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