Description
Nim is a statically typed compiled systems programming language. In Nim standard library before 1.4.2, httpClient SSL/TLS certificate verification was disabled by default. Users can upgrade to version 1.4.2 to receive a patch or, as a workaround, set "verifyMode = CVerifyPeer" as documented.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| nim-lang | security | < 1.4.2 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | nim | 1.4.2-1 | — |
| Debian 12 | nim | 1.4.2-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | nim | No fix yet | — |
| Ubuntu 18.04 LTS | nim | No fix yet | — |
| Ubuntu 16.04 LTS | nim | No fix yet | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SUSE Package Hub 15 SP4 | nim | 1.6.6-bp154.2.3.1 | openSUSE-SU-2022:10101-1 |
| SUSE Package Hub 15 SP3 | nim | 1.6.6-bp153.2.3.1 | openSUSE-SU-2022:10095-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | nim | 1.6.6-3.1 | openSUSE-SU-2024:12253-1 |
| openSUSE Leap 15.4 | nim | 1.6.6-bp154.2.3.1 | openSUSE-SU-2022:10101-1 |
| openSUSE Leap 15.3 | nim | 1.6.6-bp153.2.3.1 | openSUSE-SU-2022:10095-1 |
Advisories 3
- openSUSE-SU-2022:10101-1 Security update for nim SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2022:10095-1 Security update for nim SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:12253-1 nim-1.6.6-3.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026