CVE-2020-8231
highDue to use of a dangling pointer, libcurl 7.29.0 through 7.71.1 can use the wrong connection when sending data.
Vendor / product: Haxx — libcurl
Due to use of a dangling pointer, libcurl 7.29.0 through 7.71.1 can use the wrong connection when sending data.
CVSS
7.5
7.5 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Severity source: NVD CVSS v3.1 (nvd@nist.gov)
Timeline (UTC)
Published: 2020-12-14 20:15
Modified: 2026-11-02 18:18
NVD status: Modified
Last synced 1 day ago
Verified against the source API 2026-11-03 07:33 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
haxx / libcurl ≥7.29.0 ≤7.71.1
siemens / sinec_infrastructure_network_services <1.0.1.1
debian / debian_linux 10.0
oracle / communications_cloud_native_core_policy 1.14.0
splunk / universal_forwarder ≥8.2.0 <8.2.12, ≥9.0.0 <9.0.6, 9.1.0
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
Patch / mitigation: https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf
Patch / mitigation: https://curl.haxx.se/docs/CVE-2020-8231.html
Patch / mitigation: https://hackerone.com/reports/948876
Patch / mitigation: https://www.oracle.com/security-alerts/cpuapr2022.html
Patch / mitigation: https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf
Patch / mitigation: https://curl.haxx.se/docs/CVE-2020-8231.html
Patch / mitigation: https://hackerone.com/reports/948876
Patch / mitigation: https://www.oracle.com/security-alerts/cpuapr2022.html
References
- https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf support@hackerone.com
- https://curl.haxx.se/docs/CVE-2020-8231.html support@hackerone.com
- https://hackerone.com/reports/948876 support@hackerone.com
- https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d... support@hackerone.com
- https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a4508936... support@hackerone.com
- https://security.gentoo.org/glsa/202012-14 support@hackerone.com
- https://www.debian.org/security/2021/dsa-4881 support@hackerone.com
- https://www.oracle.com/security-alerts/cpuapr2022.html support@hackerone.com
- https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf af854a3a-2127-422b-91ae-364da2661108
- https://curl.haxx.se/docs/CVE-2020-8231.html af854a3a-2127-422b-91ae-364da2661108
- https://hackerone.com/reports/948876 af854a3a-2127-422b-91ae-364da2661108
- https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d... af854a3a-2127-422b-91ae-364da2661108
- https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a4508936... af854a3a-2127-422b-91ae-364da2661108
- https://security.gentoo.org/glsa/202012-14 af854a3a-2127-422b-91ae-364da2661108
- https://www.debian.org/security/2021/dsa-4881 af854a3a-2127-422b-91ae-364da2661108
- https://www.oracle.com/security-alerts/cpuapr2022.html af854a3a-2127-422b-91ae-364da2661108
- https://cert-portal.siemens.com/productcert/html/ssa-389290.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
- https://cert-portal.siemens.com/productcert/html/ssa-398330.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
Data sources
NVD CVE API 2.0 — fetched 2026-11-03 07:33 UTC · record ↗