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TI-2020-06649 Aliases CVE-2020-8231GHSA-xp52-49j5-h754

Due to use of a dangling pointer, libcurl 7.29.0 through 7.71.1 can use the wrong connection when sending data.

Priority MEDIUM 41CWE-416Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · None · None
Fix status
Partial Red Hat: 1 fixed, 3 without a fix

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat.

Summary

Due to use of a dangling pointer, libcurl 7.29.0 through 7.71.1 can use the wrong connection when sending data.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.05344 92nd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Partial Red Hat: 1 advisoryRed Hat: 1 fixed, 3 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
—https://github.com/curl/curllibcurl 7.29.0 to and including 7.71.1—No fix listedCNA
  • https://github.com/curl/curl Vendor— Affected libcurl 7.29.0 to and including 7.71.1 Fixed in — No fix listed CNA

CPE configurations NVD · 6

CPEVersionsRoleVendor
cpe:2.3:a:haxx:libcurl:*:*:*:*:*:*:*:*7.29.0 – 7.71.1VulnerableHaxx
cpe:2.3:a:siemens:sinec_infrastructure_network_services:*:*:*:*:*:*:*:*before 1.0.1.1VulnerableSiemens
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*10.0VulnerableDebian
cpe:2.3:a:oracle:communications_cloud_native_core_policy:1.14.0:*:*:*:*:*:*:*1.14.0VulnerableOracle
cpe:2.3:a:splunk:universal_forwarder:*:*:*:*:*:*:*:*8.2.0 to before 8.2.12; 9.0.0 to before 9.0.6VulnerableSplunk
cpe:2.3:a:splunk:universal_forwarder:9.1.0:*:*:*:*:*:*:*9.1.0VulnerableSplunk
  • cpe:2.3:a:haxx:libcurl:*:*:*:*:*:*:*:* Versions 7.29.0 – 7.71.1 Vulnerable ·Haxx
  • cpe:2.3:a:siemens:sinec_infrastructure_network_services:*:*:*:*:*:*:*:* Versions before 1.0.1.1 Vulnerable ·Siemens
  • cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* Versions 10.0 Vulnerable ·Debian
  • cpe:2.3:a:oracle:communications_cloud_native_core_policy:1.14.0:*:*:*:*:*:*:* Versions 1.14.0 Vulnerable ·Oracle
  • cpe:2.3:a:splunk:universal_forwarder:*:*:*:*:*:*:*:* Versions 8.2.0 to before 8.2.12; 9.0.0 to before 9.0.6 Vulnerable ·Splunk
  • cpe:2.3:a:splunk:universal_forwarder:9.1.0:*:*:*:*:*:*:* Versions 9.1.0 Vulnerable ·Splunk

Remediation

Red Hat 1 advisory

  • RHSA-2021:1610 Released 2021-05-18 · Red Hat rating Moderate
    curl security and bug fix update
    • Red Hat Enterprise Linux BaseOS (v. 8) curl-7.61.1-18.el8, libcurl-7.61.1-18.el8, libcurl-devel-7.61.1-18.el8 +1

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Advisory ·

    https://github.com/curl/curl — DSA-4881

    6 records Highest priority Priority HIGH 1 HIGH, 4 MEDIUM, 1 LOW

    Other records, highest priority first

    • TI-2020-06702 Uncontrolled recursion in https://github.com/curl/curlPriority HIGH 72
    • TI-2020-06701 Information disclosure in https://github.com/curl/curlPriority MEDIUM 51
    • TI-2020-06703 Improper certificate validation in https://github.com/curl/curlPriority MEDIUM 46
    Show all 6 records → Advisory →
  • Advisory ·

    https://github.com/curl/curl — GLSA-202012-14

    4 records Highest priority Priority HIGH 1 HIGH, 3 MEDIUM

    Other records, highest priority first

    • TI-2020-06702 Uncontrolled recursion in https://github.com/curl/curlPriority HIGH 72
    • TI-2020-06701 Information disclosure in https://github.com/curl/curlPriority MEDIUM 51
    • TI-2020-06703 Improper certificate validation in https://github.com/curl/curlPriority MEDIUM 46
    Show all 4 records → Advisory →

Vendor assessments

Red Hat

Red Hat rating: Low. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Ceph Storage 2AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux 7AffectedNo fix yet: Fix deferred
Red Hat Software CollectionsAffectedNo fix yet: Fix deferred
Red Hat Enterprise Linux BaseOS (v. 8)Fixed RHSA-2021:1610
Not affected: 4 products
  • .NET Core 2.1 on Red Hat Enterprise Linux
  • .NET Core 3.1 on Red Hat Enterprise Linux
  • Red Hat Enterprise Linux 5
  • Red Hat Enterprise Linux 6

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-8231
  2. 2026-10-03 Alias added: GHSA-xp52-49j5-h754
  3. 2026-10-14 EPSS moved to the 90th–95th percentile
  4. 2026-10-14 Priority changed: LOW → MEDIUM
  5. 2026-11-02 CISA SSVC decision points changed

References

Exploit 1

Patch 3

Advisory 4

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences