curl 7.41.0 through 7.73.0 is vulnerable to an improper check for certificate revocation due to insufficient verification of the OCSP…

Description

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.

Scores

EPSS (exploitation in 30 days)

4.6% · top 8.3% of all CVEs (6 Nov 2026)

CISA SSVC

Exploitation: none · Automatable: yes · Technical impact: partial

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.

Weakness

• CWE-295: Improper Certificate Validation (CWE-295) (opens in a new tab)All about CWE-295 and its CVEs

Affected products

• https://github.com/curl/curl

  • affected 7.41.0 to and including 7.73.0

References (22)

• https://hackerone.com/reports/1048457 (opens in a new tab)x_refsource_MISCx_transferred
• https://curl.se/docs/CVE-2020-8286.html (opens in a new tab)x_refsource_MISCx_transferred
• FEDORA-2020-ceaf490686 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
• [debian-lts-announce] 20201219 [SECURITY] [DLA 2500-1] curl security update (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
• FEDORA-2020-7ab62c73bc (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
• GLSA-202012-14 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
• DSA-4881 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
• 20210427 APPLE-SA-2021-04-26-3 Security Update 2021-002 Catalina (opens in a new tab)mailing-listx_refsource_FULLDISCx_transferred
• 20210427 APPLE-SA-2021-04-26-2 macOS Big Sur 11.3 (opens in a new tab)mailing-listx_refsource_FULLDISCx_transferred
• 20210427 APPLE-SA-2021-04-26-4 Security Update 2021-003 Mojave (opens in a new tab)mailing-listx_refsource_FULLDISCx_transferred
• https://www.oracle.com/security-alerts/cpuApr2021.html (opens in a new tab)x_refsource_MISCx_transferred
• https://security.netapp.com/advisory/ntap-20210122-0007/ (opens in a new tab)x_refsource_CONFIRMx_transferred
• https://support.apple.com/kb/HT212325 (opens in a new tab)x_refsource_CONFIRMx_transferred
• https://support.apple.com/kb/HT212326 (opens in a new tab)x_refsource_CONFIRMx_transferred
• https://support.apple.com/kb/HT212327 (opens in a new tab)x_refsource_CONFIRMx_transferred
• https://cert-portal.siemens.com/productcert/pdf/ssa-200951.pdf (opens in a new tab)x_refsource_CONFIRMx_transferred
• https://www.oracle.com//security-alerts/cpujul2021.html (opens in a new tab)x_refsource_MISCx_transferred
• https://www.oracle.com/security-alerts/cpuapr2022.html (opens in a new tab)x_refsource_MISCx_transferred
• https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf (opens in a new tab)x_refsource_CONFIRMx_transferred
• https://cert-portal.siemens.com/productcert/html/ssa-200951.html (opens in a new tab)
• https://cert-portal.siemens.com/productcert/html/ssa-389290.html (opens in a new tab)
• https://cert-portal.siemens.com/productcert/html/ssa-398330.html (opens in a new tab)

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2020-8286](https://trackcve.app/badge/CVE-2020-8286.svg)](https://trackcve.app/cve/CVE-2020-8286)

Record last updated 14 Oct 2026, 08:40 UTC.