--- id: CVE-2020-8286 title: >- curl 7.41.0 through 7.73.0 is vulnerable to an improper check for certificate revocation due to insufficient verification of the OCSP response. summary: >- curl 7.41.0 through 7.73.0 is vulnerable to an improper check for certificate revocation due to insufficient verification of the OCSP response. severity: high cvss: 7.5 cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N' cwe: - CWE-295 - CWE-295 vendor: haxx product: libcurl affected: - 'libcurl >= 7.41.0, < 7.74.0' - fedora = 32 - fedora = 33 - debian_linux = 9.0 - debian_linux = 10.0 - clustered_data_ontap - hci_management_node - solidfire - hci_bootstrap_os - hci_storage_node_firmware - mac_os_x < 10.14.6 - 'mac_os_x >= 10.15, < 10.15.7' - mac_os_x = 10.14.6 - mac_os_x = 10.15.7 - 'macos >= 11.0, < 11.3' - simatic_tim_1531_irc_firmware <= 2.2 - sinec_infrastructure_network_services < 1.0.1.1 - communications_billing_and_revenue_management = 12.0.0.3.0 - communications_cloud_native_core_policy = 1.14.0 - essbase = 21.2 - peoplesoft_enterprise_peopletools = 8.58 - 'universal_forwarder >= 8.2.0, < 8.2.12' - 'universal_forwarder >= 9.0.0, < 9.0.6' - universal_forwarder = 9.1.0 patched: - libcurl 7.74.0 - mac_os_x 10.15.7 - macos 11.3 - sinec_infrastructure_network_services 1.0.1.1 - universal_forwarder 9.0.6 published: '2020-12-14' updated: '2026-10-14' sourceUpdated: '2026-10-14T09:17:20.887' source: NVD sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2020-8286' references: - url: 'http://seclists.org/fulldisclosure/2021/Apr/50' label: support@hackerone.com - url: 'http://seclists.org/fulldisclosure/2021/Apr/51' label: support@hackerone.com - url: 'http://seclists.org/fulldisclosure/2021/Apr/54' label: support@hackerone.com - url: 'https://cert-portal.siemens.com/productcert/pdf/ssa-200951.pdf' label: support@hackerone.com - url: 'https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf' label: support@hackerone.com - url: 'https://curl.se/docs/CVE-2020-8286.html' label: support@hackerone.com - url: 'https://hackerone.com/reports/1048457' label: support@hackerone.com - url: 'https://lists.debian.org/debian-lts-announce/2020/12/msg00029.html' label: support@hackerone.com - url: >- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DAEHE2S2QLO4AO4MEEYL75NB7SAH5PSL/ label: support@hackerone.com - url: >- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NZUVSQHN2ESHMJXNQ2Z7T2EELBB5HJXG/ label: support@hackerone.com - url: 'https://security.gentoo.org/glsa/202012-14' label: support@hackerone.com - url: 'https://security.netapp.com/advisory/ntap-20210122-0007/' label: support@hackerone.com - url: 'https://support.apple.com/kb/HT212325' label: support@hackerone.com - url: 'https://support.apple.com/kb/HT212326' label: support@hackerone.com - url: 'https://support.apple.com/kb/HT212327' label: support@hackerone.com - url: 'https://www.debian.org/security/2021/dsa-4881' label: support@hackerone.com - url: 'https://www.oracle.com//security-alerts/cpujul2021.html' label: support@hackerone.com - url: 'https://www.oracle.com/security-alerts/cpuApr2021.html' label: support@hackerone.com - url: 'https://www.oracle.com/security-alerts/cpuapr2022.html' label: support@hackerone.com - url: 'http://seclists.org/fulldisclosure/2021/Apr/50' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'http://seclists.org/fulldisclosure/2021/Apr/51' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'http://seclists.org/fulldisclosure/2021/Apr/54' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://cert-portal.siemens.com/productcert/pdf/ssa-200951.pdf' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://curl.se/docs/CVE-2020-8286.html' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://hackerone.com/reports/1048457' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://lists.debian.org/debian-lts-announce/2020/12/msg00029.html' label: af854a3a-2127-422b-91ae-364da2661108 - url: >- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DAEHE2S2QLO4AO4MEEYL75NB7SAH5PSL/ label: af854a3a-2127-422b-91ae-364da2661108 - url: >- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NZUVSQHN2ESHMJXNQ2Z7T2EELBB5HJXG/ label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://security.gentoo.org/glsa/202012-14' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://security.netapp.com/advisory/ntap-20210122-0007/' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://support.apple.com/kb/HT212325' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://support.apple.com/kb/HT212326' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://support.apple.com/kb/HT212327' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://www.debian.org/security/2021/dsa-4881' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://www.oracle.com//security-alerts/cpujul2021.html' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://www.oracle.com/security-alerts/cpuApr2021.html' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://www.oracle.com/security-alerts/cpuapr2022.html' label: af854a3a-2127-422b-91ae-364da2661108 - url: 'https://cert-portal.siemens.com/productcert/html/ssa-200951.html' label: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e - url: 'https://cert-portal.siemens.com/productcert/html/ssa-389290.html' label: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e - url: 'https://cert-portal.siemens.com/productcert/html/ssa-398330.html' label: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e tags: - nvd epss: 0.04631 epssPercentile: 0.91514 ingestedAt: '2026-10-14T09:24:26.058Z' --- ## Overview curl 7.41.0 through 7.73.0 is vulnerable to an improper check for certificate revocation due to insufficient verification of the OCSP response. ## Affected - `libcurl >= 7.41.0, < 7.74.0` - `fedora = 32` - `fedora = 33` - `debian_linux = 9.0` - `debian_linux = 10.0` - `clustered_data_ontap` - `hci_management_node` - `solidfire` - `hci_bootstrap_os` - `hci_storage_node_firmware` - `mac_os_x < 10.14.6` - `mac_os_x >= 10.15, < 10.15.7` - `mac_os_x = 10.14.6` - `mac_os_x = 10.15.7` - `macos >= 11.0, < 11.3` - `simatic_tim_1531_irc_firmware <= 2.2` - `sinec_infrastructure_network_services < 1.0.1.1` - `communications_billing_and_revenue_management = 12.0.0.3.0` - `communications_cloud_native_core_policy = 1.14.0` - `essbase = 21.2` - `peoplesoft_enterprise_peopletools = 8.58` - `universal_forwarder >= 8.2.0, < 8.2.12` - `universal_forwarder >= 9.0.0, < 9.0.6` - `universal_forwarder = 9.1.0` ## Remediation Upgrade past the affected range: - `libcurl 7.74.0` - `mac_os_x 10.15.7` - `macos 11.3` - `sinec_infrastructure_network_services 1.0.1.1` - `universal_forwarder 9.0.6`