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CVE-2020-8231 libcurl

Affected softwarelibcurl
Severity7.5 High CVSS 3.1 2 scores
WeaknessUse after free (CWE-416)
Published14 Dec 2020
Updated2 Nov 2026

Description

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

Exploitation status

No public exploit

No exploit has been reported in the sources we check. Published 5 years ago.

  • CISA KEV not listed
  • VulnCheck KEV not listed
  • CISA Vulnrichment exploitation: none
  • Indexed PoC none indexed
  • EPSS 5.3% chance in 30 days

Waratek protection

Outside Waratek scope

A Java vulnerability, but not one Waratek protects. It affects only Java on a user's desktop (applets, Web Start, JavaFX, the installer), sits in a product the Waratek agent can't be installed into, or is in a package we don't expect in business applications. The decision below says which.

  • Protection none
  • Action not pursued none
  • Review human Researcher
  • Record active
Decided by Manual classification of this CVE in the legacy dataset
Finding A manual classification set this CVE's status to Outside Waratek scope, but the CVE names a tracked product.

CVSS

7.5 HIGH v3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N 2 metrics

We show the highest score from the newest CVSS version. Scores from different versions can't be compared, and the first score listed is sometimes a 0.0 placeholder.

VersionScoreBandVectorAssignerType
CVSS 3.1 7.5 HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N NVD Primary published
CVSS 2.0 5.0 none AV:N/AC:L/Au:N/C:P/I:N/A:N NVD Primary

Affected software and releases

Oracle advisories

AdvisoryTypeQuarterProducts Oracle names in its risk matrix
Oracle Critical Patch Update April 2022 ↗ CPU 2022-Q2 Oracle Communications / Policy (libcurl) (1.14.0)

Oracle components and versions

FamilyComponentVersions, as Oracle lists themRead as
Oracle Communications Policy (libcurl) 1.14.0 1.14.0

Products and versions

5 products, 7 version entries
SourceVendorProductSchemeAffected versions
nvd debian debian linux generic 10.0
nvd haxx libcurl generic ≥ 7.29.0 and ≤ 7.71.1
nvd oracle communications cloud native core policy generic 1.14.0
nvd siemens sinec infrastructure network services generic < 1.0.1.1
nvd splunk universal forwarder generic ≥ 8.2.0 and < 8.2.12 · ≥ 9.0.0 and < 9.0.6 · 9.1.0

References

URLTags
https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf Patch, Third Party Advisory
https://curl.haxx.se/docs/CVE-2020-8231.html Patch, Third Party Advisory
https://hackerone.com/reports/948876 Exploit, Issue Tracking, Patch, Third Party Advisory
https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E Mailing List, Third Party Advisory
https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E Mailing List, Third Party Advisory
https://security.gentoo.org/glsa/202012-14 Third Party Advisory
https://www.debian.org/security/2021/dsa-4881 Third Party Advisory
https://www.oracle.com/security-alerts/cpuapr2022.html Patch, Third Party Advisory
https://cert-portal.siemens.com/productcert/html/ssa-389290.html
https://cert-portal.siemens.com/productcert/html/ssa-398330.html

Timeline

Published2020-12-14By the CVE Program.
NVD record modified2026-11-02NVD's own last-modified date for this record.