All vulnerabilities

Servers and applications

CVE-2026-82209

When libpsl support is enabled, libcurl fails to enforce the Public Suffix List boundary check when processing a `Set-Cookie` header where the `Domain` attribute explicitly matches an origin host that is itself a public suffix (e.g., `Domain=co.uk` set by `co.uk`). Instead of coercing it into a strict host-only cookie, libcurl saves the cookie with wildcard domain scope (`.co.uk`). Consequently,…

Severity
High 8.2
Published
6 Sept 2026
Last changed
15 Sept 2026
Added to UpHeron
21 Oct 2026
Fixed in
8.22.0
Sources
NVD

Affected software

SoftwareAffected versions
curlServers and applications · cpe:a:haxx:curl
  • From 7.46.0 before 8.22.0

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2026-82209
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2026-82209