HSTS cache import drops longer-lived child
CVE-2026-87862 is fixed in 6 products on 1 platform, first by curl 7.81.0-1ubuntu1.30, released October 21, 2026. It is not reported as exploited. Patch Radar priority: Routine.
Importing a `includeSubDomains` parent HSTS entry before a longer-lived child entry, silently drops the child. Consequently, when the parent expires, the child's valid HSTS policy is lost, causing curl to issue unencrypted HTTP requests rather than upgrading to HTTPS.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| curl · Ubuntu 22.04.1 LTS (jammy) | 7.81.0-1ubuntu1.30 | curl 7.81.0-1ubuntu1.30 | Oct 21, 2026 |
| curl · Ubuntu 24.04.5 LTS (noble) | 8.5.0-2ubuntu10.16 | curl 8.5.0-2ubuntu10.16 | Oct 21, 2026 |
| curl · Ubuntu 26.04.1 LTS (resolute) | 8.18.0-1ubuntu2.8 | curl 8.18.0-1ubuntu2.8 | Nov 7, 2026 |
| curl · sles 15.6 | 8.22.0-150600.4.58.1 | SUSE-SU-2026:5069-1 | Nov 7, 2026 |
| curl · sles 15.7 | 8.22.0-150700.7.33.1 | SUSE-SU-2026:5068-1 | Nov 7, 2026 |
| libcurl3-gnutls · Ubuntu 22.04.1 LTS (jammy) | 7.81.0-1ubuntu1.30 | libcurl3-gnutls 7.81.0-1ubuntu1.30 | Oct 21, 2026 |
| libcurl3-nss · Ubuntu 22.04.1 LTS (jammy) | 7.81.0-1ubuntu1.30 | libcurl3-nss 7.81.0-1ubuntu1.30 | Oct 21, 2026 |
| libcurl3t64-gnutls · Ubuntu 24.04.5 LTS (noble) | 8.5.0-2ubuntu10.16 | libcurl3t64-gnutls 8.5.0-2ubuntu10.16 | Oct 21, 2026 |
| libcurl3t64-gnutls · Ubuntu 26.04.1 LTS (resolute) | 8.18.0-1ubuntu2.8 | libcurl3t64-gnutls 8.18.0-1ubuntu2.8 | Nov 7, 2026 |
| libcurl4 · Ubuntu 22.04.1 LTS (jammy) | 7.81.0-1ubuntu1.30 | libcurl4 7.81.0-1ubuntu1.30 | Oct 21, 2026 |
| libcurl4t64 · Ubuntu 24.04.5 LTS (noble) | 8.5.0-2ubuntu10.16 | libcurl4t64 8.5.0-2ubuntu10.16 | Oct 21, 2026 |
| libcurl4t64 · Ubuntu 26.04.1 LTS (resolute) | 8.18.0-1ubuntu2.8 | libcurl4t64 8.18.0-1ubuntu2.8 | Nov 7, 2026 |
Patch Radar data is free to use with attribution. Terms and how to credit it.
Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.