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Vulnerabilities
Vulnerable Software

Vulnerability Details 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, the cookie is inappropriately included in subsequent outbound requests or HTTP redirects to arbitrary sibling subdomains under the same public suffix (e.g., `attacker.co.uk`).
Exploit prediction scoring system (EPSS) score
EPSS Score 0.005
EPSS Ranking 43.8%
CVSS Severity
CVSS v3 Score 8.2
Products affected by CVE-2026-82209
  • Haxx » Curl » Version: 7.46.0
    cpe:2.3:a:haxx:curl:7.46.0
  • Haxx » Curl » Version: 7.47.0
    cpe:2.3:a:haxx:curl:7.47.0
  • Haxx » Curl » Version: 7.47.1
    cpe:2.3:a:haxx:curl:7.47.1
  • Haxx » Curl » Version: 7.48.0
    cpe:2.3:a:haxx:curl:7.48.0
  • Haxx » Curl » Version: 7.49.0
    cpe:2.3:a:haxx:curl:7.49.0
  • Haxx » Curl » Version: 7.49.1
    cpe:2.3:a:haxx:curl:7.49.1
  • Haxx » Curl » Version: 7.50.0
    cpe:2.3:a:haxx:curl:7.50.0
  • Haxx » Curl » Version: 7.50.1
    cpe:2.3:a:haxx:curl:7.50.1
  • Haxx » Curl » Version: 7.50.2
    cpe:2.3:a:haxx:curl:7.50.2
  • Haxx » Curl » Version: 7.50.3
    cpe:2.3:a:haxx:curl:7.50.3
  • Haxx » Curl » Version: 7.51.0
    cpe:2.3:a:haxx:curl:7.51.0
  • Haxx » Curl » Version: 7.52.0
    cpe:2.3:a:haxx:curl:7.52.0
  • Haxx » Curl » Version: 7.52.1
    cpe:2.3:a:haxx:curl:7.52.1
  • Haxx » Curl » Version: 7.53.0
    cpe:2.3:a:haxx:curl:7.53.0
  • Haxx » Curl » Version: 7.53.1
    cpe:2.3:a:haxx:curl:7.53.1
  • Haxx » Curl » Version: 7.54.0
    cpe:2.3:a:haxx:curl:7.54.0
  • Haxx » Curl » Version: 7.54.1
    cpe:2.3:a:haxx:curl:7.54.1
  • Haxx » Curl » Version: 7.55.0
    cpe:2.3:a:haxx:curl:7.55.0
  • Haxx » Curl » Version: 7.55.1
    cpe:2.3:a:haxx:curl:7.55.1
  • Haxx » Curl » Version: 7.56.0
    cpe:2.3:a:haxx:curl:7.56.0
  • Haxx » Curl » Version: 7.56.1
    cpe:2.3:a:haxx:curl:7.56.1
  • Haxx » Curl » Version: 7.57.0
    cpe:2.3:a:haxx:curl:7.57.0
  • Haxx » Curl » Version: 7.58.0
    cpe:2.3:a:haxx:curl:7.58.0
  • Haxx » Curl » Version: 7.59.0
    cpe:2.3:a:haxx:curl:7.59.0
  • Haxx » Curl » Version: 7.60.0
    cpe:2.3:a:haxx:curl:7.60.0
  • Haxx » Curl » Version: 7.61.0
    cpe:2.3:a:haxx:curl:7.61.0
  • Haxx » Curl » Version: 7.61.1
    cpe:2.3:a:haxx:curl:7.61.1
  • Haxx » Curl » Version: 7.62.0
    cpe:2.3:a:haxx:curl:7.62.0
  • Haxx » Curl » Version: 7.63.0
    cpe:2.3:a:haxx:curl:7.63.0
  • Haxx » Curl » Version: 7.64.0
    cpe:2.3:a:haxx:curl:7.64.0
  • Haxx » Curl » Version: 7.64.1
    cpe:2.3:a:haxx:curl:7.64.1
  • Haxx » Curl » Version: 7.65.0
    cpe:2.3:a:haxx:curl:7.65.0
  • Haxx » Curl » Version: 7.65.1
    cpe:2.3:a:haxx:curl:7.65.1
  • Haxx » Curl » Version: 7.65.2
    cpe:2.3:a:haxx:curl:7.65.2
  • Haxx » Curl » Version: 7.65.3
    cpe:2.3:a:haxx:curl:7.65.3
  • Haxx » Curl » Version: 7.66.0
    cpe:2.3:a:haxx:curl:7.66.0
  • Haxx » Curl » Version: 7.67.0
    cpe:2.3:a:haxx:curl:7.67.0
  • Haxx » Curl » Version: 7.68.0
    cpe:2.3:a:haxx:curl:7.68.0
  • Haxx » Curl » Version: 7.69.0
    cpe:2.3:a:haxx:curl:7.69.0
  • Haxx » Curl » Version: 7.69.1
    cpe:2.3:a:haxx:curl:7.69.1
  • Haxx » Curl » Version: 7.70.0
    cpe:2.3:a:haxx:curl:7.70.0
  • Haxx » Curl » Version: 7.71.0
    cpe:2.3:a:haxx:curl:7.71.0
  • Haxx » Curl » Version: 7.71.1
    cpe:2.3:a:haxx:curl:7.71.1
  • Haxx » Curl » Version: 7.72.0
    cpe:2.3:a:haxx:curl:7.72.0
  • Haxx » Curl » Version: 7.73.0
    cpe:2.3:a:haxx:curl:7.73.0
  • Haxx » Curl » Version: 7.74.0
    cpe:2.3:a:haxx:curl:7.74.0
  • Haxx » Curl » Version: 7.75.0
    cpe:2.3:a:haxx:curl:7.75.0
  • Haxx » Curl » Version: 7.76.0
    cpe:2.3:a:haxx:curl:7.76.0
  • Haxx » Curl » Version: 7.76.1
    cpe:2.3:a:haxx:curl:7.76.1
  • Haxx » Curl » Version: 7.77.0
    cpe:2.3:a:haxx:curl:7.77.0
  • Haxx » Curl » Version: 7.78.0
    cpe:2.3:a:haxx:curl:7.78.0
  • Haxx » Curl » Version: 7.79.0
    cpe:2.3:a:haxx:curl:7.79.0
  • Haxx » Curl » Version: 7.79.1
    cpe:2.3:a:haxx:curl:7.79.1
  • Haxx » Curl » Version: 7.80.0
    cpe:2.3:a:haxx:curl:7.80.0
  • Haxx » Curl » Version: 7.81.0
    cpe:2.3:a:haxx:curl:7.81.0
  • Haxx » Curl » Version: 7.82.0
    cpe:2.3:a:haxx:curl:7.82.0
  • Haxx » Curl » Version: 7.83.0
    cpe:2.3:a:haxx:curl:7.83.0
  • Haxx » Curl » Version: 7.83.1
    cpe:2.3:a:haxx:curl:7.83.1
  • Haxx » Curl » Version: 7.84.0
    cpe:2.3:a:haxx:curl:7.84.0
  • Haxx » Curl » Version: 7.85.0
    cpe:2.3:a:haxx:curl:7.85.0
  • Haxx » Curl » Version: 7.86.0
    cpe:2.3:a:haxx:curl:7.86.0
  • Haxx » Curl » Version: 7.87.0
    cpe:2.3:a:haxx:curl:7.87.0
  • Haxx » Curl » Version: 7.88.0
    cpe:2.3:a:haxx:curl:7.88.0
  • Haxx » Curl » Version: 7.88.1
    cpe:2.3:a:haxx:curl:7.88.1
  • Haxx » Curl » Version: 8.0.0
    cpe:2.3:a:haxx:curl:8.0.0
  • Haxx » Curl » Version: 8.0.1
    cpe:2.3:a:haxx:curl:8.0.1
  • Haxx » Curl » Version: 8.1.0
    cpe:2.3:a:haxx:curl:8.1.0
  • Haxx » Curl » Version: 8.1.1
    cpe:2.3:a:haxx:curl:8.1.1
  • Haxx » Curl » Version: 8.1.2
    cpe:2.3:a:haxx:curl:8.1.2
  • Haxx » Curl » Version: 8.10.0
    cpe:2.3:a:haxx:curl:8.10.0
  • Haxx » Curl » Version: 8.10.1
    cpe:2.3:a:haxx:curl:8.10.1
  • Haxx » Curl » Version: 8.11.0
    cpe:2.3:a:haxx:curl:8.11.0
  • Haxx » Curl » Version: 8.11.1
    cpe:2.3:a:haxx:curl:8.11.1
  • Haxx » Curl » Version: 8.12.0
    cpe:2.3:a:haxx:curl:8.12.0
  • Haxx » Curl » Version: 8.12.1
    cpe:2.3:a:haxx:curl:8.12.1
  • Haxx » Curl » Version: 8.13.0
    cpe:2.3:a:haxx:curl:8.13.0
  • Haxx » Curl » Version: 8.14.0
    cpe:2.3:a:haxx:curl:8.14.0
  • Haxx » Curl » Version: 8.14.1
    cpe:2.3:a:haxx:curl:8.14.1
  • Haxx » Curl » Version: 8.15.0
    cpe:2.3:a:haxx:curl:8.15.0
  • Haxx » Curl » Version: 8.16.0
    cpe:2.3:a:haxx:curl:8.16.0
  • Haxx » Curl » Version: 8.17.0
    cpe:2.3:a:haxx:curl:8.17.0
  • Haxx » Curl » Version: 8.18.0
    cpe:2.3:a:haxx:curl:8.18.0
  • Haxx » Curl » Version: 8.19.0
    cpe:2.3:a:haxx:curl:8.19.0
  • Haxx » Curl » Version: 8.2.0
    cpe:2.3:a:haxx:curl:8.2.0
  • Haxx » Curl » Version: 8.2.1
    cpe:2.3:a:haxx:curl:8.2.1
  • Haxx » Curl » Version: 8.20.0
    cpe:2.3:a:haxx:curl:8.20.0
  • Haxx » Curl » Version: 8.21.0
    cpe:2.3:a:haxx:curl:8.21.0
  • Haxx » Curl » Version: 8.4.0
    cpe:2.3:a:haxx:curl:8.4.0
  • Haxx » Curl » Version: 8.5.0
    cpe:2.3:a:haxx:curl:8.5.0
  • Haxx » Curl » Version: 8.6.0
    cpe:2.3:a:haxx:curl:8.6.0
  • Haxx » Curl » Version: 8.7.0
    cpe:2.3:a:haxx:curl:8.7.0
  • Haxx » Curl » Version: 8.7.1
    cpe:2.3:a:haxx:curl:8.7.1
  • Haxx » Curl » Version: 8.8.0
    cpe:2.3:a:haxx:curl:8.8.0
  • Haxx » Curl » Version: 8.9.0
    cpe:2.3:a:haxx:curl:8.9.0
  • Haxx » Curl » Version: 8.9.1
    cpe:2.3:a:haxx:curl:8.9.1


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