CVE-2026-80229 (GCVE-0-2026-80229)

Vulnerability from cvelistv5 – Published: 2026-09-06 17:47 – Updated: 2026-09-15 06:03
VLAI
Title
OpenSSL provider use-after-free
Summary
When performing transfers via libcurl’s multi interface, pooled TLS connections can outlive their originating easy handles. In OpenSSL 3 provider configurations, libcurl attaches an allocated library context to the easy handle's state and passes it to OpenSSL without acquiring an ownership reference; destroying the easy handle prematurely frees this context while the active connection retains a dangling pointer, leading to a heap-use-after-free upon subsequent I/O or post-handshake operations.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-08 15:43 UTC
CWE
Assigner
curl CNA under the redhat root
CNA scorecard D 46/100 over 59 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
curl curl Affected: 8.14.0 , < 8.14.2 (semver)
Affected: 8.15.0 , < 8.16.1 (semver)
Affected: 8.17.0 , < 8.20.1 (semver)
Affected: 8.21.0 , < 8.22.0 (semver)
guessed Create a notification for this product.
curl curl Affected: f2ce6c46b9dcc46ced0ce43fa95176ea7599a854 , < 7ea37abc6ac0120ba5f6d94be8d196f7cf1506bb (git)
guessed Create a notification for this product.
curl curl Affected: 8.21.0
Affected: 8.20.0
Affected: 8.19.0
Affected: 8.18.0
Affected: 8.17.0
Affected: 8.16.0
Affected: 8.15.0
Affected: 8.14.1
Affected: 8.14.0
guessed Create a notification for this product.
Credits
Stanislav Fort (Aisle Research) Daniel Stenberg
Show details on NVD website
To clipboard 

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                  "description": "Use After Free",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-09-15T06:03:08.881Z",
            "orgId": "2499f714-1537-4658-8207-48ae4bb9eae9",
            "shortName": "curl"
          },
          "references": [
            {
              "url": "https://curl.se/docs/CVE-2026-80229.json"
            },
            {
              "url": "https://curl.se/docs/CVE-2026-80229.html"
            },
            {
              "url": "https://hackerone.com/reports/3969255"
            }
          ],
          "title": "OpenSSL provider use-after-free",
          "x_generator": {
            "engine": "cvelib 1.8.0"
          },
          "x_osv": {
            "affected": [
              {
                "ranges": [
                  {
                    "events": [
                      {
                        "introduced": "8.14.0"
                      },
                      {
                        "fixed": "8.14.2"
                      },
                      {
                        "introduced": "8.15.0"
                      },
                      {
                        "fixed": "8.16.1"
                      },
                      {
                        "introduced": "8.17.0"
                      },
                      {
                        "fixed": "8.20.1"
                      },
                      {
                        "introduced": "8.21.0"
                      },
                      {
                        "fixed": "8.22.0"
                      }
                    ],
                    "type": "SEMVER"
                  },
                  {
                    "events": [
                      {
                        "introduced": "f2ce6c46b9dcc46ced0ce43fa95176ea7599a854"
                      },
                      {
                        "fixed": "7ea37abc6ac0120ba5f6d94be8d196f7cf1506bb"
                      }
                    ],
                    "repo": "https://github.com/curl/curl.git",
                    "type": "GIT"
                  }
                ],
                "versions": [
                  "8.21.0",
                  "8.20.0",
                  "8.19.0",
                  "8.18.0",
                  "8.17.0",
                  "8.16.0",
                  "8.15.0",
                  "8.14.1",
                  "8.14.0"
                ]
              }
            ],
            "aliases": [
              "CVE-2026-80229"
            ],
            "credits": [
              {
                "name": "Stanislav Fort (Aisle Research)",
                "type": "finder"
              },
              {
                "name": "Daniel Stenberg",
                "type": "remediation developer"
              }
            ],
            "database_specific": {
              "CWE": {
                "desc": "Use After Free",
                "id": "CWE-416"
              },
              "URL": "https://curl.se/docs/CVE-2026-80229.json",
              "affects": "both",
              "issue": "https://hackerone.com/reports/3969255",
              "last_affected": "8.21.0",
              "package": "curl",
              "severity": "Low",
              "www": "https://curl.se/docs/CVE-2026-80229.html"
            },
            "details": "When performing transfers via libcurl\u2019s multi interface, pooled TLS\nconnections can outlive their originating easy handles. In OpenSSL 3 provider\nconfigurations, libcurl attaches an allocated library context to the easy\nhandle\u0027s state and passes it to OpenSSL without acquiring an ownership\nreference; destroying the easy handle prematurely frees this context while the\nactive connection retains a dangling pointer, leading to a heap-use-after-free\nupon subsequent I/O or post-handshake operations.",
            "id": "CURL-CVE-2026-80229",
            "modified": "2026-09-07T10:34:51.00Z",
            "published": "2026-09-02T08:00:00.00Z",
            "schema_version": "1.5.0",
            "summary": "OpenSSL provider use-after-free"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "2499f714-1537-4658-8207-48ae4bb9eae9",
        "assignerShortName": "curl",
        "cveId": "CVE-2026-80229",
        "datePublished": "2026-09-06T17:47:59.510Z",
        "dateReserved": "2026-08-26T04:24:23.168Z",
        "dateUpdated": "2026-09-15T06:03:08.881Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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