Vulnerability Instance
Lookup for vulnerabilities affecting packages.
GET /api/vulnerabilities/266458?format=api
{ "url": "http://public2.vulnerablecode.io/api/vulnerabilities/266458?format=api", "vulnerability_id": "VCID-tsj1-ebsc-zbhm", "summary": "Impact\n\nCloudflare quiche was discovered to be vulnerable to incorrect congestion window growth, which could cause it to send data at a rate faster than the path might actually support.\n\nAn unauthenticated remote attacker can exploit the vulnerability by first completing a handshake and initiating a congestion-controlled data transfer towards itself. Then, it could manipulate the victim's congestion control state by sending ACK frames exercising an opportunistic ACK attack; see RFC 9000 Section 21.4. The victim could grow the congestion window beyond typical expectations and allow more bytes in flight than the path might really support.\n\n\n\nPatches\n\n\nquiche 0.24.4 is the earliest version containing the fix for this issue.", "aliases": [ { "alias": "CVE-2025-4820" } ], "fixed_packages": [ { "url": "http://public2.vulnerablecode.io/api/packages/963122?format=api", "purl": "pkg:apk/alpine/dnsdist@1.9.11-r0?arch=x86_64&distroversion=v3.22&reponame=community", "is_vulnerable": false, "affected_by_vulnerabilities": [], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:apk/alpine/dnsdist@1.9.11-r0%3Farch=x86_64&distroversion=v3.22&reponame=community" }, { "url": "http://public2.vulnerablecode.io/api/packages/963116?format=api", "purl": "pkg:apk/alpine/dnsdist@1.9.11-r0?arch=armv7&distroversion=v3.22&reponame=community", "is_vulnerable": false, "affected_by_vulnerabilities": [], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:apk/alpine/dnsdist@1.9.11-r0%3Farch=armv7&distroversion=v3.22&reponame=community" }, { "url": "http://public2.vulnerablecode.io/api/packages/963120?format=api", "purl": "pkg:apk/alpine/dnsdist@1.9.11-r0?arch=s390x&distroversion=v3.22&reponame=community", "is_vulnerable": false, "affected_by_vulnerabilities": [], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:apk/alpine/dnsdist@1.9.11-r0%3Farch=s390x&distroversion=v3.22&reponame=community" }, { "url": "http://public2.vulnerablecode.io/api/packages/963117?format=api", "purl": "pkg:apk/alpine/dnsdist@1.9.11-r0?arch=loongarch64&distroversion=v3.22&reponame=community", "is_vulnerable": false, "affected_by_vulnerabilities": [], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:apk/alpine/dnsdist@1.9.11-r0%3Farch=loongarch64&distroversion=v3.22&reponame=community" }, { "url": "http://public2.vulnerablecode.io/api/packages/963114?format=api", "purl": "pkg:apk/alpine/dnsdist@1.9.11-r0?arch=aarch64&distroversion=v3.22&reponame=community", "is_vulnerable": false, "affected_by_vulnerabilities": [], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:apk/alpine/dnsdist@1.9.11-r0%3Farch=aarch64&distroversion=v3.22&reponame=community" }, { "url": "http://public2.vulnerablecode.io/api/packages/963115?format=api", "purl": "pkg:apk/alpine/dnsdist@1.9.11-r0?arch=armhf&distroversion=v3.22&reponame=community", "is_vulnerable": false, "affected_by_vulnerabilities": [], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:apk/alpine/dnsdist@1.9.11-r0%3Farch=armhf&distroversion=v3.22&reponame=community" }, { "url": "http://public2.vulnerablecode.io/api/packages/963118?format=api", "purl": "pkg:apk/alpine/dnsdist@1.9.11-r0?arch=ppc64le&distroversion=v3.22&reponame=community", "is_vulnerable": false, "affected_by_vulnerabilities": [], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:apk/alpine/dnsdist@1.9.11-r0%3Farch=ppc64le&distroversion=v3.22&reponame=community" }, { "url": "http://public2.vulnerablecode.io/api/packages/963119?format=api", "purl": "pkg:apk/alpine/dnsdist@1.9.11-r0?arch=riscv64&distroversion=v3.22&reponame=community", "is_vulnerable": false, "affected_by_vulnerabilities": [], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:apk/alpine/dnsdist@1.9.11-r0%3Farch=riscv64&distroversion=v3.22&reponame=community" }, { "url": "http://public2.vulnerablecode.io/api/packages/963121?format=api", "purl": "pkg:apk/alpine/dnsdist@1.9.11-r0?arch=x86&distroversion=v3.22&reponame=community", "is_vulnerable": false, "affected_by_vulnerabilities": [], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:apk/alpine/dnsdist@1.9.11-r0%3Farch=x86&distroversion=v3.22&reponame=community" }, { "url": "http://public2.vulnerablecode.io/api/packages/403605?format=api", "purl": "pkg:apk/alpine/dnsdist@2.0.1-r0?arch=armhf&distroversion=edge&reponame=community", "is_vulnerable": false, "affected_by_vulnerabilities": [], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:apk/alpine/dnsdist@2.0.1-r0%3Farch=armhf&distroversion=edge&reponame=community" }, { "url": "http://public2.vulnerablecode.io/api/packages/403608?format=api", "purl": "pkg:apk/alpine/dnsdist@2.0.1-r0?arch=ppc64le&distroversion=edge&reponame=community", "is_vulnerable": false, "affected_by_vulnerabilities": [], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:apk/alpine/dnsdist@2.0.1-r0%3Farch=ppc64le&distroversion=edge&reponame=community" }, { "url": "http://public2.vulnerablecode.io/api/packages/403611?format=api", "purl": "pkg:apk/alpine/dnsdist@2.0.1-r0?arch=x86&distroversion=edge&reponame=community", "is_vulnerable": false, "affected_by_vulnerabilities": [], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:apk/alpine/dnsdist@2.0.1-r0%3Farch=x86&distroversion=edge&reponame=community" }, { "url": "http://public2.vulnerablecode.io/api/packages/403612?format=api", "purl": "pkg:apk/alpine/dnsdist@2.0.1-r0?arch=x86_64&distroversion=edge&reponame=community", "is_vulnerable": false, "affected_by_vulnerabilities": [], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:apk/alpine/dnsdist@2.0.1-r0%3Farch=x86_64&distroversion=edge&reponame=community" }, { "url": "http://public2.vulnerablecode.io/api/packages/415840?format=api", "purl": "pkg:apk/alpine/dnsdist@2.0.1-r0?arch=aarch64&distroversion=v3.23&reponame=community", "is_vulnerable": false, "affected_by_vulnerabilities": [], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:apk/alpine/dnsdist@2.0.1-r0%3Farch=aarch64&distroversion=v3.23&reponame=community" }, { "url": "http://public2.vulnerablecode.io/api/packages/415841?format=api", "purl": "pkg:apk/alpine/dnsdist@2.0.1-r0?arch=armhf&distroversion=v3.23&reponame=community", "is_vulnerable": false, "affected_by_vulnerabilities": [], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:apk/alpine/dnsdist@2.0.1-r0%3Farch=armhf&distroversion=v3.23&reponame=community" }, { "url": "http://public2.vulnerablecode.io/api/packages/415847?format=api", "purl": "pkg:apk/alpine/dnsdist@2.0.1-r0?arch=x86&distroversion=v3.23&reponame=community", "is_vulnerable": false, "affected_by_vulnerabilities": [], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:apk/alpine/dnsdist@2.0.1-r0%3Farch=x86&distroversion=v3.23&reponame=community" }, { "url": "http://public2.vulnerablecode.io/api/packages/403604?format=api", "purl": "pkg:apk/alpine/dnsdist@2.0.1-r0?arch=aarch64&distroversion=edge&reponame=community", "is_vulnerable": false, "affected_by_vulnerabilities": [], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:apk/alpine/dnsdist@2.0.1-r0%3Farch=aarch64&distroversion=edge&reponame=community" }, { "url": "http://public2.vulnerablecode.io/api/packages/415848?format=api", "purl": "pkg:apk/alpine/dnsdist@2.0.1-r0?arch=x86_64&distroversion=v3.23&reponame=community", "is_vulnerable": false, "affected_by_vulnerabilities": [], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:apk/alpine/dnsdist@2.0.1-r0%3Farch=x86_64&distroversion=v3.23&reponame=community" }, { "url": "http://public2.vulnerablecode.io/api/packages/415845?format=api", "purl": "pkg:apk/alpine/dnsdist@2.0.1-r0?arch=riscv64&distroversion=v3.23&reponame=community", "is_vulnerable": false, "affected_by_vulnerabilities": [], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:apk/alpine/dnsdist@2.0.1-r0%3Farch=riscv64&distroversion=v3.23&reponame=community" }, { "url": "http://public2.vulnerablecode.io/api/packages/403606?format=api", "purl": "pkg:apk/alpine/dnsdist@2.0.1-r0?arch=armv7&distroversion=edge&reponame=community", "is_vulnerable": false, "affected_by_vulnerabilities": [], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:apk/alpine/dnsdist@2.0.1-r0%3Farch=armv7&distroversion=edge&reponame=community" }, { "url": "http://public2.vulnerablecode.io/api/packages/403607?format=api", "purl": "pkg:apk/alpine/dnsdist@2.0.1-r0?arch=loongarch64&distroversion=edge&reponame=community", "is_vulnerable": false, "affected_by_vulnerabilities": [], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:apk/alpine/dnsdist@2.0.1-r0%3Farch=loongarch64&distroversion=edge&reponame=community" }, { "url": "http://public2.vulnerablecode.io/api/packages/415842?format=api", "purl": "pkg:apk/alpine/dnsdist@2.0.1-r0?arch=armv7&distroversion=v3.23&reponame=community", "is_vulnerable": false, "affected_by_vulnerabilities": [], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:apk/alpine/dnsdist@2.0.1-r0%3Farch=armv7&distroversion=v3.23&reponame=community" }, { "url": "http://public2.vulnerablecode.io/api/packages/415844?format=api", "purl": "pkg:apk/alpine/dnsdist@2.0.1-r0?arch=ppc64le&distroversion=v3.23&reponame=community", "is_vulnerable": false, "affected_by_vulnerabilities": [], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:apk/alpine/dnsdist@2.0.1-r0%3Farch=ppc64le&distroversion=v3.23&reponame=community" }, { "url": "http://public2.vulnerablecode.io/api/packages/415843?format=api", "purl": "pkg:apk/alpine/dnsdist@2.0.1-r0?arch=loongarch64&distroversion=v3.23&reponame=community", "is_vulnerable": false, "affected_by_vulnerabilities": [], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:apk/alpine/dnsdist@2.0.1-r0%3Farch=loongarch64&distroversion=v3.23&reponame=community" }, { "url": "http://public2.vulnerablecode.io/api/packages/403609?format=api", "purl": "pkg:apk/alpine/dnsdist@2.0.1-r0?arch=riscv64&distroversion=edge&reponame=community", "is_vulnerable": false, "affected_by_vulnerabilities": [], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:apk/alpine/dnsdist@2.0.1-r0%3Farch=riscv64&distroversion=edge&reponame=community" }, { "url": "http://public2.vulnerablecode.io/api/packages/403610?format=api", "purl": "pkg:apk/alpine/dnsdist@2.0.1-r0?arch=s390x&distroversion=edge&reponame=community", "is_vulnerable": false, "affected_by_vulnerabilities": [], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:apk/alpine/dnsdist@2.0.1-r0%3Farch=s390x&distroversion=edge&reponame=community" }, { "url": "http://public2.vulnerablecode.io/api/packages/415846?format=api", "purl": "pkg:apk/alpine/dnsdist@2.0.1-r0?arch=s390x&distroversion=v3.23&reponame=community", "is_vulnerable": false, "affected_by_vulnerabilities": [], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:apk/alpine/dnsdist@2.0.1-r0%3Farch=s390x&distroversion=v3.23&reponame=community" } ], "affected_packages": [], "references": [ { "reference_url": "https://api.first.org/data/v1/epss?cve=CVE-2025-4820", "reference_id": "", "reference_type": "", "scores": [ { "value": "0.00335", "scoring_system": "epss", "scoring_elements": "0.563", "published_at": "2026-04-02T12:55:00Z" }, { "value": "0.00335", "scoring_system": "epss", "scoring_elements": "0.56322", "published_at": "2026-04-04T12:55:00Z" }, { "value": "0.00335", "scoring_system": "epss", "scoring_elements": "0.56302", "published_at": "2026-04-07T12:55:00Z" }, { "value": "0.00335", "scoring_system": "epss", "scoring_elements": "0.56354", "published_at": "2026-04-08T12:55:00Z" }, { "value": "0.00335", "scoring_system": "epss", "scoring_elements": "0.56359", "published_at": "2026-04-09T12:55:00Z" }, { "value": "0.00335", "scoring_system": "epss", "scoring_elements": "0.56369", "published_at": "2026-04-11T12:55:00Z" }, { "value": "0.00335", "scoring_system": "epss", "scoring_elements": "0.56345", "published_at": "2026-04-12T12:55:00Z" }, { "value": "0.00335", "scoring_system": "epss", "scoring_elements": "0.56327", "published_at": "2026-04-13T12:55:00Z" }, { "value": "0.0086", "scoring_system": "epss", "scoring_elements": "0.75109", "published_at": "2026-04-29T12:55:00Z" }, { "value": "0.0086", "scoring_system": "epss", "scoring_elements": "0.75143", "published_at": "2026-05-07T12:55:00Z" }, { "value": "0.0086", "scoring_system": "epss", "scoring_elements": "0.75064", "published_at": "2026-04-16T12:55:00Z" }, { "value": "0.0086", "scoring_system": "epss", "scoring_elements": "0.75105", "published_at": "2026-04-26T12:55:00Z" }, { "value": "0.0086", "scoring_system": "epss", "scoring_elements": "0.75116", "published_at": "2026-05-05T12:55:00Z" }, { "value": "0.0086", "scoring_system": "epss", "scoring_elements": "0.75072", "published_at": "2026-04-18T12:55:00Z" }, { "value": "0.0086", "scoring_system": "epss", "scoring_elements": "0.75062", "published_at": "2026-04-21T12:55:00Z" }, { "value": "0.0086", "scoring_system": "epss", "scoring_elements": "0.751", "published_at": "2026-04-24T12:55:00Z" } ], "url": "https://api.first.org/data/v1/epss?cve=CVE-2025-4820" }, { "reference_url": "https://github.com/cloudflare/quiche/security/advisories/GHSA-2v9p-3p3h-w56j", "reference_id": "GHSA-2v9p-3p3h-w56j", "reference_type": "", "scores": [ { "value": "5.3", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L" }, { "value": "Track", "scoring_system": "ssvc", "scoring_elements": "SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2025-06-18T18:27:27Z/" } ], "url": "https://github.com/cloudflare/quiche/security/advisories/GHSA-2v9p-3p3h-w56j" } ], "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": "5.3 - 5.3", "exploitability": null, "weighted_severity": null, "risk_score": null, "resource_url": "http://public2.vulnerablecode.io/vulnerabilities/VCID-tsj1-ebsc-zbhm" }