CVE-2026-80229

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.

Database specific

{
    "cna_assigner":  "curl",
    "cwe_ids":  [
        "CWE-416"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80229.json"
}

References

Affected packages

Git / github.com/curl/curl

Affected ranges

Type

GIT

Repo

https://github.com/curl/curl

Events

Introduced

4dacb79fcdd9364c1083e06f6a011d797a344f47

Fixed

01346829096c61b372692f6dc43ffa778c6caccd

Database specific

Show details

{
    "extracted_events":  [
        {
            "cpe":  "cpe:2.3:a:haxx:curl:*:*:*:*:*:*:*:*",
            "range":  [
                {
                    "introduced":  "8.14.0"
                },
                {
                    "fixed":  "8.22.0"
                }
            ],
            "source":  "CPE_RANGE"
        }
    ]
}

Type

GIT

Repo

https://github.com/curl/curl.git

Events

Introduced

f2ce6c46b9dcc46ced0ce43fa95176ea7599a854

Fixed

7ea37abc6ac0120ba5f6d94be8d196f7cf1506bb

Database specific

Show details

{
    "extracted_events":  [
        {
            "range":  [
                {
                    "introduced":  "f2ce6c46b9dcc46ced0ce43fa95176ea7599a854"
                },
                {
                    "fixed":  "7ea37abc6ac0120ba5f6d94be8d196f7cf1506bb"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StandardRange"
        }
    ]
}

Affected versions

8.*

8.14.0

8.14.1

8.15.0

8.16.0

8.17.0

8.18.0

8.19.0

8.20.0

8.21.0

Other

curl-8_14_0

curl-8_14_1

curl-8_15_0

curl-8_16_0

curl-8_17_0

curl-8_18_0

curl-8_19_0

curl-8_20_0

curl-8_21_0

rc-8_18_0-1

rc-8_18_0-2

rc-8_18_0-3

rc-8_19_0-1

rc-8_19_0-2

rc-8_19_0-3

rc-8_20_0-1

rc-8_20_0-2

rc-8_20_0-3

rc-8_21_0-1

rc-8_21_0-2

rc-8_21_0-3

rc-8_22_0-1

rc-8_22_0-2

rc-8_22_0-3

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-80229.json"

vanir_signatures

[
    {
        "deprecated":  false,
        "digest":  {
            "line_hashes":  [
                "286481243370392075526062118659509114348",
                "196216237767420629426097604457509099271",
                "68125101134514249852390309734181512406",
                "31227070220736528463295638619520929314"
            ],
            "threshold":  0.9
        },
        "id":  "CVE-2026-80229-49021c9f",
        "signature_type":  "Line",
        "signature_version":  "v1",
        "source":  "https://github.com/curl/curl.git/commit/7ea37abc6ac0120ba5f6d94be8d196f7cf1506bb",
        "target":  {
            "file":  "lib/vtls/openssl.c"
        }
    },
    {
        "deprecated":  false,
        "digest":  {
            "function_hash":  "93812128733312520413839406253910216274",
            "length":  4945
        },
        "id":  "CVE-2026-80229-74875d56",
        "signature_type":  "Function",
        "signature_version":  "v1",
        "source":  "https://github.com/curl/curl.git/commit/7ea37abc6ac0120ba5f6d94be8d196f7cf1506bb",
        "target":  {
            "file":  "lib/vtls/openssl.c",
            "function":  "Curl_ossl_ctx_init"
        }
    }
]

vanir_signatures_modified

"2026-10-24T15:03:57Z"