Security updatesCanonical / Ubuntu

Ubuntu explains curl patch coverage: check both command-line tools and embedded libcurl

Ubuntu announces patches for several curl and libcurl vulnerabilities, noting that among Ubuntu releases, CVE-2026-92392 affects only 26.04 LTS. An identical tool name does not mean the affected conditions are identical across OS versions.

Original scenario illustration of file-transfer testing and curl and libcurl update checks at a Linux workstation
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Source Facts

Canonical explained on 14 October that curl coordinated disclosure of several security issues that day, and that Ubuntu had provided related updates through USN-8927-1 and USN-8932-1. Both the curl command-line tool and the libcurl library used by applications are affected.

The article says that among the Ubuntu releases it lists, CVE-2026-92392 affects only 26.04 LTS; exploitation also requires a malicious server and specific conditions. Other issues concern particular uses of certificates, protocols or libraries, so assess them against versions and actual functions.

Next Steps for Businesses / Editorial Observations

Alongside central package updates, identify applications that bundle libcurl. A single curl version query may miss separate copies.

Next steps you can take

  • Check the relevant USNs for your Ubuntu version, updating system curl packages and vendor-managed embedded copies.
  • After updating, restart relevant long-running applications and test the HTTPS, proxy and file-transfer workflows actually used.

Original sources

Fixes available for CVE-2026-92392 and other curl vulnerabilities

Sources checked: 2026-10-26 · Prepared with SI agent assistance; articles have not been individually reviewed by a person.

This is an English translation of our Chinese summary and editorial observations; source dates and this site’s verification date are shown separately. If an original advisory changes, refer to the source.

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