CVE-2026-10536

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Source
https://cve.org/CVERecord?id=CVE-2026-10536
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-10536.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-10536
Aliases
Downstream
Related
Published
2026-07-03T06:11:15.378Z
Modified
2026-07-10T10:14:29.313337607Z
Severity
  • 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
HTTP/2 stream-dependency tree UAF
Details

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 
{
    "unresolved_ranges": [
        {
            "source": "AFFECTED_FIELD",
            "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"
                }
            ]
        }
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/10xxx/CVE-2026-10536.json",
    "cna_assigner": "curl"
}
References

Affected packages

Git / github.com/curl/curl

Affected ranges

Type
GIT
Repo
https://github.com/curl/curl
Events
Introduced
3027611ca6d4cc5510d2d0fccc3e5a074e09a2fb
Fixed
68720b4837284335b2d63cb358f8f6ce65f5bc55
Database specific 
{
    "source": "CPE_RANGE",
    "cpe": "cpe:2.3:a:haxx:curl:*:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "7.88.0"
        },
        {
            "fixed": "8.21.0"
        }
    ]
}

Affected versions

Other
curl-7_88_0
curl-7_88_1
curl-8_0_0
curl-8_0_1
curl-8_10_0
curl-8_10_1
curl-8_11_0
curl-8_11_1
curl-8_12_0
curl-8_12_1
curl-8_13_0
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_1_0
curl-8_1_1
curl-8_1_2
curl-8_20_0
curl-8_2_0
curl-8_2_1
curl-8_3_0
curl-8_4_0
curl-8_5_0
curl-8_6_0
curl-8_7_0
curl-8_7_1
curl-8_8_0
curl-8_9_0
curl-8_9_1
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

Database specific

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