Vulnerability Instance
Lookup for vulnerabilities affecting packages.
GET /api/vulnerabilities/76019?format=api
{ "url": "http://public2.vulnerablecode.io/api/vulnerabilities/76019?format=api", "vulnerability_id": "VCID-bfrw-1zcy-xyc2", "summary": "A security vulnerability has been detected in fraillt bitsery up to 5.2.4. Affected is the function loadFromSharedState in the library include/bitsery/ext/std_smart_ptr.h. Such manipulation leads to improper validation of specified type of input. It is possible to launch the attack remotely. The exploit has been disclosed publicly and may be used. Upgrading to version 5.2.5 is able to address this issue. The name of the patch is 66d16516e24893bebc1c8af52bf2fe9ad0735061. Upgrading the affected component is advised.", "aliases": [ { "alias": "CVE-2026-9521" } ], "fixed_packages": [], "affected_packages": [], "references": [ { "reference_url": "https://api.first.org/data/v1/epss?cve=CVE-2026-9521", "reference_id": "", "reference_type": "", "scores": [ { "value": "0.00079", "scoring_system": "epss", "scoring_elements": "0.23519", "published_at": "2026-06-11T12:55:00Z" } ], "url": "https://api.first.org/data/v1/epss?cve=CVE-2026-9521" }, { "reference_url": "https://vuldb.com/vuln/365541", "reference_id": "365541", "reference_type": "", "scores": [ { "value": "7.5", "scoring_system": "cvssv2", "scoring_elements": "AV:N/AC:L/Au:N/C:P/I:P/A:P/E:POC/RL:OF/RC:C" }, { "value": "7.3", "scoring_system": "cvssv3", "scoring_elements": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C" }, { "value": "7.3", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C" }, { "value": "6.3", "scoring_system": "cvssv4", "scoring_elements": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P" }, { "value": "Track", "scoring_system": "ssvc", "scoring_elements": "SSVCv2/E:P/A:Y/T:P/P:M/B:A/M:M/D:T/2026-05-26T12:19:20Z/" } ], "url": "https://vuldb.com/vuln/365541" }, { "reference_url": "https://github.com/fraillt/bitsery/commit/66d16516e24893bebc1c8af52bf2fe9ad0735061", "reference_id": "66d16516e24893bebc1c8af52bf2fe9ad0735061", "reference_type": "", "scores": [ { "value": "7.5", "scoring_system": "cvssv2", "scoring_elements": "AV:N/AC:L/Au:N/C:P/I:P/A:P/E:POC/RL:OF/RC:C" }, { "value": "7.3", "scoring_system": "cvssv3", "scoring_elements": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C" }, { "value": "7.3", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C" }, { "value": "6.3", "scoring_system": "cvssv4", "scoring_elements": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P" }, { "value": "Track", "scoring_system": "ssvc", "scoring_elements": "SSVCv2/E:P/A:Y/T:P/P:M/B:A/M:M/D:T/2026-05-26T12:19:20Z/" } ], "url": "https://github.com/fraillt/bitsery/commit/66d16516e24893bebc1c8af52bf2fe9ad0735061" }, { "reference_url": "https://gist.github.com/TrebledJ/750abc64a826f19dd2d6774724629b71", "reference_id": "750abc64a826f19dd2d6774724629b71", "reference_type": "", "scores": [ { "value": "7.5", "scoring_system": "cvssv2", "scoring_elements": "AV:N/AC:L/Au:N/C:P/I:P/A:P/E:POC/RL:OF/RC:C" }, { "value": "7.3", "scoring_system": "cvssv3", "scoring_elements": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C" }, { "value": "7.3", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C" }, { "value": "6.3", "scoring_system": "cvssv4", "scoring_elements": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P" }, { "value": "Track", "scoring_system": "ssvc", "scoring_elements": "SSVCv2/E:P/A:Y/T:P/P:M/B:A/M:M/D:T/2026-05-26T12:19:20Z/" } ], "url": "https://gist.github.com/TrebledJ/750abc64a826f19dd2d6774724629b71" }, { "reference_url": "https://vuldb.com/submit/814457", "reference_id": "814457", "reference_type": "", "scores": [ { "value": "7.5", "scoring_system": "cvssv2", "scoring_elements": "AV:N/AC:L/Au:N/C:P/I:P/A:P/E:POC/RL:OF/RC:C" }, { "value": "7.3", "scoring_system": "cvssv3", "scoring_elements": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C" }, { "value": "7.3", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C" }, { "value": "6.3", "scoring_system": "cvssv4", "scoring_elements": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P" }, { "value": "Track", "scoring_system": "ssvc", "scoring_elements": "SSVCv2/E:P/A:Y/T:P/P:M/B:A/M:M/D:T/2026-05-26T12:19:20Z/" } ], "url": "https://vuldb.com/submit/814457" }, { "reference_url": "https://github.com/fraillt/bitsery/", "reference_id": "bitsery", "reference_type": "", "scores": [ { "value": "7.5", "scoring_system": "cvssv2", "scoring_elements": "AV:N/AC:L/Au:N/C:P/I:P/A:P/E:POC/RL:OF/RC:C" }, { "value": "7.3", "scoring_system": "cvssv3", "scoring_elements": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C" }, { "value": "7.3", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C" }, { "value": "6.3", "scoring_system": "cvssv4", "scoring_elements": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P" }, { "value": "Track", "scoring_system": "ssvc", "scoring_elements": "SSVCv2/E:P/A:Y/T:P/P:M/B:A/M:M/D:T/2026-05-26T12:19:20Z/" } ], "url": "https://github.com/fraillt/bitsery/" }, { "reference_url": "https://github.com/fraillt/bitsery/blob/master/CHANGELOG.md#525-2025-10-09", "reference_id": "CHANGELOG.md#525-2025-10-09", "reference_type": "", "scores": [ { "value": "7.5", "scoring_system": "cvssv2", "scoring_elements": "AV:N/AC:L/Au:N/C:P/I:P/A:P/E:POC/RL:OF/RC:C" }, { "value": "7.3", "scoring_system": "cvssv3", "scoring_elements": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C" }, { "value": "7.3", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C" }, { "value": "6.3", "scoring_system": "cvssv4", "scoring_elements": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P" }, { "value": "Track", "scoring_system": "ssvc", "scoring_elements": "SSVCv2/E:P/A:Y/T:P/P:M/B:A/M:M/D:T/2026-05-26T12:19:20Z/" } ], "url": "https://github.com/fraillt/bitsery/blob/master/CHANGELOG.md#525-2025-10-09" }, { "reference_url": "https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:fraillt:bitsery:*:*:*:*:*:*:*:*", "reference_id": "cpe:2.3:a:fraillt:bitsery:*:*:*:*:*:*:*:*", "reference_type": "", "scores": [], "url": "https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:fraillt:bitsery:*:*:*:*:*:*:*:*" }, { "reference_url": "https://vuldb.com/vuln/365541/cti", "reference_id": "cti", "reference_type": "", "scores": [ { "value": "7.5", "scoring_system": "cvssv2", "scoring_elements": "AV:N/AC:L/Au:N/C:P/I:P/A:P/E:POC/RL:OF/RC:C" }, { "value": "7.3", "scoring_system": "cvssv3", "scoring_elements": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C" }, { "value": "7.3", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C" }, { "value": "6.3", "scoring_system": "cvssv4", "scoring_elements": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P" }, { "value": "Track", "scoring_system": "ssvc", "scoring_elements": "SSVCv2/E:P/A:Y/T:P/P:M/B:A/M:M/D:T/2026-05-26T12:19:20Z/" } ], "url": "https://vuldb.com/vuln/365541/cti" }, { "reference_url": "https://github.com/fraillt/bitsery/releases/tag/v5.2.5", "reference_id": "v5.2.5", "reference_type": "", "scores": [ { "value": "7.5", "scoring_system": "cvssv2", "scoring_elements": "AV:N/AC:L/Au:N/C:P/I:P/A:P/E:POC/RL:OF/RC:C" }, { "value": "7.3", "scoring_system": "cvssv3", "scoring_elements": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C" }, { "value": "7.3", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C" }, { "value": "6.3", "scoring_system": "cvssv4", "scoring_elements": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P" }, { "value": "Track", "scoring_system": "ssvc", "scoring_elements": "SSVCv2/E:P/A:Y/T:P/P:M/B:A/M:M/D:T/2026-05-26T12:19:20Z/" } ], "url": "https://github.com/fraillt/bitsery/releases/tag/v5.2.5" } ], "weaknesses": [ { "cwe_id": 20, "name": "Improper Input Validation", "description": "The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly." }, { "cwe_id": 1287, "name": "Improper Validation of Specified Type of Input", "description": "The product receives input that is expected to be of a certain type, but it does not validate or incorrectly validates that the input is actually of the expected type." } ], "exploits": [], "severity_range_score": "6.3 - 7.5", "exploitability": null, "weighted_severity": null, "risk_score": null, "resource_url": "http://public2.vulnerablecode.io/vulnerabilities/VCID-bfrw-1zcy-xyc2" }