Vulnerability Instance
Lookup for vulnerabilities affecting packages.
GET /api/vulnerabilities/30531?format=api
{ "url": "http://public2.vulnerablecode.io/api/vulnerabilities/30531?format=api", "vulnerability_id": "VCID-mt5t-ymhy-xuhp", "summary": "h2 vulnerable to denial of service\nHyper is an HTTP library for Rust and h2 is an HTTP 2.0 client & server implementation for Rust. An issue was discovered in h2 v0.2.4 when processing header frames. It incorrectly processes the HTTP2 `RST_STREAM` frames by not always releasing the memory immediately upon receiving the reset frame, leading to stream stacking. As a result, the memory and CPU usage are high which can lead to a Denial of Service (DoS).\n\nThis issue affects users only when dealing with http2 connections.", "aliases": [ { "alias": "CVE-2023-26964" }, { "alias": "GHSA-f8vr-r385-rh5r" } ], "fixed_packages": [ { "url": "http://public2.vulnerablecode.io/api/packages/581313?format=api", "purl": "pkg:cargo/h2@0.3.17", "is_vulnerable": false, "affected_by_vulnerabilities": [], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:cargo/h2@0.3.17" }, { "url": "http://public2.vulnerablecode.io/api/packages/938655?format=api", "purl": "pkg:deb/debian/rust-h2@0.3.13-2?distro=trixie", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-n66u-b73u-zucb" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/rust-h2@0.3.13-2%3Fdistro=trixie" }, { "url": "http://public2.vulnerablecode.io/api/packages/938658?format=api", "purl": "pkg:deb/debian/rust-h2@0.4.7-3?distro=trixie", "is_vulnerable": false, "affected_by_vulnerabilities": [], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/rust-h2@0.4.7-3%3Fdistro=trixie" }, { "url": "http://public2.vulnerablecode.io/api/packages/938656?format=api", "purl": "pkg:deb/debian/rust-h2@0.4.13-1?distro=trixie", "is_vulnerable": false, "affected_by_vulnerabilities": [], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/rust-h2@0.4.13-1%3Fdistro=trixie" } ], "affected_packages": [], "references": [ { "reference_url": "https://api.first.org/data/v1/epss?cve=CVE-2023-26964", "reference_id": "", "reference_type": "", "scores": [ { "value": "0.00256", "scoring_system": "epss", "scoring_elements": "0.49008", "published_at": "2026-04-04T12:55:00Z" }, { "value": "0.00256", "scoring_system": "epss", "scoring_elements": "0.48982", "published_at": "2026-04-02T12:55:00Z" }, { "value": "0.00256", "scoring_system": "epss", "scoring_elements": "0.49029", "published_at": "2026-04-11T12:55:00Z" }, { "value": "0.00256", "scoring_system": "epss", "scoring_elements": "0.49012", "published_at": "2026-04-09T12:55:00Z" }, { "value": "0.00256", "scoring_system": "epss", "scoring_elements": "0.49016", "published_at": "2026-04-08T12:55:00Z" }, { "value": "0.00256", "scoring_system": "epss", "scoring_elements": "0.48962", "published_at": "2026-04-07T12:55:00Z" }, { "value": "0.00283", "scoring_system": "epss", "scoring_elements": "0.51751", "published_at": "2026-04-13T12:55:00Z" }, { "value": "0.00283", "scoring_system": "epss", "scoring_elements": "0.51768", "published_at": "2026-04-12T12:55:00Z" }, { "value": "0.00283", "scoring_system": "epss", "scoring_elements": "0.51735", "published_at": "2026-04-26T12:55:00Z" }, { "value": "0.00283", "scoring_system": "epss", "scoring_elements": "0.51729", "published_at": "2026-04-24T12:55:00Z" }, { "value": "0.00283", "scoring_system": "epss", "scoring_elements": "0.5178", "published_at": "2026-04-21T12:55:00Z" }, { "value": "0.00283", "scoring_system": "epss", "scoring_elements": "0.51799", "published_at": "2026-04-18T12:55:00Z" }, { "value": "0.00283", "scoring_system": "epss", "scoring_elements": "0.51792", "published_at": "2026-04-16T12:55:00Z" }, { "value": "0.00329", "scoring_system": "epss", "scoring_elements": "0.55959", "published_at": "2026-05-14T12:55:00Z" }, { "value": "0.00329", "scoring_system": "epss", "scoring_elements": "0.55872", "published_at": "2026-04-29T12:55:00Z" }, { "value": "0.00329", "scoring_system": "epss", "scoring_elements": "0.55818", "published_at": "2026-05-05T12:55:00Z" }, { "value": "0.00329", "scoring_system": "epss", "scoring_elements": "0.55866", "published_at": "2026-05-07T12:55:00Z" }, { "value": "0.00329", "scoring_system": "epss", "scoring_elements": "0.55925", "published_at": "2026-05-09T12:55:00Z" }, { "value": "0.00329", "scoring_system": "epss", "scoring_elements": "0.55874", "published_at": "2026-05-11T12:55:00Z" }, { "value": "0.00329", "scoring_system": "epss", "scoring_elements": "0.559", "published_at": "2026-05-12T12:55:00Z" } ], "url": "https://api.first.org/data/v1/epss?cve=CVE-2023-26964" }, { "reference_url": "https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml", "reference_id": "", "reference_type": "", "scores": [ { "value": "4.7", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H" } ], "url": "https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml" }, { "reference_url": "https://github.com/hyperium/h2/issues/621", "reference_id": "", "reference_type": "", "scores": [ { "value": "MODERATE", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://github.com/hyperium/h2/issues/621" }, { "reference_url": "https://github.com/hyperium/h2/pull/668", "reference_id": "", "reference_type": "", "scores": [ { "value": "MODERATE", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://github.com/hyperium/h2/pull/668" }, { "reference_url": "https://github.com/hyperium/hyper", "reference_id": "", "reference_type": "", "scores": [ { "value": "MODERATE", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://github.com/hyperium/hyper" }, { "reference_url": "https://github.com/hyperium/hyper/issues/2877", "reference_id": "", "reference_type": "", "scores": [ { "value": "7.5", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H" }, { "value": "MODERATE", "scoring_system": "generic_textual", "scoring_elements": "" }, { "value": "Track", "scoring_system": "ssvc", "scoring_elements": "SSVCv2/E:P/A:Y/T:P/P:M/B:A/M:M/D:T/2025-02-11T15:45:51Z/" } ], "url": "https://github.com/hyperium/hyper/issues/2877" }, { "reference_url": "https://nvd.nist.gov/vuln/detail/CVE-2023-26964", "reference_id": "", "reference_type": "", "scores": [ { "value": "MODERATE", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-26964" }, { "reference_url": "https://rustsec.org/advisories/RUSTSEC-2023-0034.html", "reference_id": "", "reference_type": "", "scores": [ { "value": "MODERATE", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://rustsec.org/advisories/RUSTSEC-2023-0034.html" }, { "reference_url": "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1034723", "reference_id": "1034723", "reference_type": "", "scores": [], "url": "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1034723" }, { "reference_url": "https://github.com/advisories/GHSA-f8vr-r385-rh5r", "reference_id": "GHSA-f8vr-r385-rh5r", "reference_type": "", "scores": [ { "value": "MODERATE", "scoring_system": "cvssv3.1_qr", "scoring_elements": "" } ], "url": "https://github.com/advisories/GHSA-f8vr-r385-rh5r" }, { "reference_url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZHBAE7LQARMPUEEV4TWET4D7G6WCWBUD/", "reference_id": "ZHBAE7LQARMPUEEV4TWET4D7G6WCWBUD", "reference_type": "", "scores": [ { "value": "7.5", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H" }, { "value": "Track", "scoring_system": "ssvc", "scoring_elements": "SSVCv2/E:P/A:Y/T:P/P:M/B:A/M:M/D:T/2025-02-11T15:45:51Z/" } ], "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZHBAE7LQARMPUEEV4TWET4D7G6WCWBUD/" }, { "reference_url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZYRZ5Y2ALATKKPIITAFAJIS4TR4LUAHO/", "reference_id": "ZYRZ5Y2ALATKKPIITAFAJIS4TR4LUAHO", "reference_type": "", "scores": [ { "value": "7.5", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H" }, { "value": "Track", "scoring_system": "ssvc", "scoring_elements": "SSVCv2/E:P/A:Y/T:P/P:M/B:A/M:M/D:T/2025-02-11T15:45:51Z/" } ], "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZYRZ5Y2ALATKKPIITAFAJIS4TR4LUAHO/" } ], "weaknesses": [ { "cwe_id": 770, "name": "Allocation of Resources Without Limits or Throttling", "description": "The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor." } ], "exploits": [], "severity_range_score": "4.0 - 7.5", "exploitability": null, "weighted_severity": null, "risk_score": null, "resource_url": "http://public2.vulnerablecode.io/vulnerabilities/VCID-mt5t-ymhy-xuhp" }