nim: In Nim 1.2.4, the standard library httpClient is vulnerable to a CR-LFinjection in the target URL
CVE-2020-15693 is fixed in nim on 1 platform, first by nim 1.2.6-1, released January 16, 2026. It is not reported as exploited. Patch Radar priority: Routine.
In Nim 1.2.4, the standard library httpClient is vulnerable to a CR-LFinjection in the target URL. An injection is possible if the attackercontrols any part of the URL provided in a call (such as httpClient.get orhttpClient.post), the User-Agent header value, or custom HTTP header namesor values.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| nim · Ubuntu 24.10 (oracular) | 1.2.6-1 | nim 1.2.6-1 | Jan 16, 2026 |
| nim · Ubuntu 25.04 (plucky) | 1.2.6-1 | nim 1.2.6-1 | Jan 16, 2026 |
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