CVE-2026-10536

A use-after-free vulnerability exists in libcurl when an application configures an HTTP/2 stream-dependency tree via CURLOPT_STREAM_DEPENDS or CURLOPT_STREAM_DEPENDS_E, subsequently invokes curl_easy_reset(), and finally terminates the handle with curl_easy_cleanup(). During this final cleanup phase, libcurl attempts to access and modify an internal structure that was already freed during the reset operation.

Database specific

{
    "cna_assigner": "curl",
    "cwe_ids": [
        "CWE-416"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/10xxx/CVE-2026-10536.json",
    "unresolved_ranges": [
        {
            "extracted_events": [
                {
                    "introduced": "7.88.0"
                },
                {
                    "fixed": "8.14.2"
                },
                {
                    "introduced": "8.15.0"
                },
                {
                    "fixed": "8.16.1"
                },
                {
                    "introduced": "8.17.0"
                },
                {
                    "fixed": "8.20.1"
                },
                {
                    "introduced": "71b7e0161032927cdfb4e75ea40f65b8898b3956"
                },
                {
                    "fixed": "bfbff7852f050232edd3e5ca5c6bf2021c340f5a"
                }
            ],
            "source": "AFFECTED_FIELD"
        }
    ]
}

References

Affected packages

Git / github.com/curl/curl

Affected ranges

Type

GIT

Repo

https://github.com/curl/curl

Events

Introduced

a05f34973e6c4bb629d018f7cb51487be1c904d8

Fixed

68720b4837284335b2d63cb358f8f6ce65f5bc55

Database specific

Show details

{
    "cpe": "cpe:2.3:a:haxx:curl:*:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "8.20.0"
        },
        {
            "last_affected": "8.20.0"
        },
        {
            "introduced": "8.19.0"
        },
        {
            "last_affected": "8.19.0"
        },
        {
            "introduced": "8.18.0"
        },
        {
            "last_affected": "8.18.0"
        },
        {
            "introduced": "8.17.0"
        },
        {
            "last_affected": "8.17.0"
        },
        {
            "introduced": "8.16.0"
        },
        {
            "last_affected": "8.16.0"
        },
        {
            "introduced": "8.15.0"
        },
        {
            "last_affected": "8.15.0"
        },
        {
            "introduced": "8.14.1"
        },
        {
            "last_affected": "8.14.1"
        },
        {
            "introduced": "8.14.0"
        },
        {
            "last_affected": "8.14.0"
        },
        {
            "introduced": "8.13.0"
        },
        {
            "last_affected": "8.13.0"
        },
        {
            "introduced": "8.12.1"
        },
        {
            "last_affected": "8.12.1"
        },
        {
            "introduced": "8.12.0"
        },
        {
            "last_affected": "8.12.0"
        },
        {
            "introduced": "8.11.1"
        },
        {
            "last_affected": "8.11.1"
        },
        {
            "introduced": "8.11.0"
        },
        {
            "last_affected": "8.11.0"
        },
        {
            "introduced": "8.10.1"
        },
        {
            "last_affected": "8.10.1"
        },
        {
            "introduced": "8.10.0"
        },
        {
            "last_affected": "8.10.0"
        },
        {
            "introduced": "8.9.1"
        },
        {
            "last_affected": "8.9.1"
        },
        {
            "introduced": "8.9.0"
        },
        {
            "last_affected": "8.9.0"
        },
        {
            "introduced": "8.8.0"
        },
        {
            "last_affected": "8.8.0"
        },
        {
            "introduced": "8.7.1"
        },
        {
            "last_affected": "8.7.1"
        },
        {
            "introduced": "8.7.0"
        },
        {
            "last_affected": "8.7.0"
        },
        {
            "introduced": "8.6.0"
        },
        {
            "last_affected": "8.6.0"
        },
        {
            "introduced": "8.5.0"
        },
        {
            "last_affected": "8.5.0"
        },
        {
            "introduced": "8.4.0"
        },
        {
            "last_affected": "8.4.0"
        },
        {
            "introduced": "8.3.0"
        },
        {
            "last_affected": "8.3.0"
        },
        {
            "introduced": "8.2.1"
        },
        {
            "last_affected": "8.2.1"
        },
        {
            "introduced": "8.2.0"
        },
        {
            "last_affected": "8.2.0"
        },
        {
            "introduced": "8.1.2"
        },
        {
            "last_affected": "8.1.2"
        },
        {
            "introduced": "8.1.1"
        },
        {
            "last_affected": "8.1.1"
        },
        {
            "introduced": "8.1.0"
        },
        {
            "last_affected": "8.1.0"
        },
        {
            "introduced": "8.0.1"
        },
        {
            "last_affected": "8.0.1"
        },
        {
            "introduced": "8.0.0"
        },
        {
            "last_affected": "8.0.0"
        },
        {
            "introduced": "7.88.1"
        },
        {
            "last_affected": "7.88.1"
        },
        {
            "introduced": "7.88.0"
        },
        {
            "last_affected": "7.88.0"
        },
        {
            "fixed": "8.21.0"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "CPE_RANGE"
    ]
}

Affected versions

7.*

7.88.0

7.88.1

8.*

8.0.0

8.0.1

8.1.0

8.1.1

8.1.2

8.10.0

8.10.1

8.11.0

8.11.1

8.12.0

8.12.1

8.13.0

8.14.0

8.14.1

8.15.0

8.16.0

8.17.0

8.18.0

8.19.0

8.2.0

8.2.1

8.20.0

8.3.0

8.4.0

8.5.0

8.6.0

8.7.0

8.7.1

8.8.0

8.9.0

8.9.1

Other

curl-8_20_0

rc-8_21_0-1

rc-8_21_0-2

rc-8_21_0-3

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-10536.json"