nim: In Nim 1.2.4, the standard library httpClient fails to properly validatethe server response
CVE-2020-15694 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 fails to properly validatethe server response. For example, httpClient.get().contentLength() does notraise any error if a malicious server provides a negative Content-Length.
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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