{ "schemaVersion": 1, "attribution": [ { "source": "CISA Known Exploited Vulnerabilities", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog", "licence": "US government work" }, { "source": "GitHub Advisory Database", "url": "https://github.com/advisories", "licence": "CC BY 4.0" }, { "source": "Have I Been Pwned", "url": "https://haveibeenpwned.com/", "licence": "CC BY 4.0" }, { "source": "CVE Program (CVE records)", "url": "https://www.cve.org/Legal/TermsOfUse", "licence": "CVE Terms of Use", "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.", "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy." }, { "source": "FIRST EPSS", "url": "https://www.first.org/epss/", "licence": "free to use; FIRST requests attribution" } ], "record": { "id": "CVE-2024-9681", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2024-9681", "idYear": 2024, "status": "PUBLISHED", "publishedAt": "2024-11-06T07:47:20.162Z", "updatedAt": "2025-11-03T20:56:39.087Z", "importedAt": "2026-10-24T01:57:24.991Z", "snapshot": { "id": "cve_2026-10-24_midnight_baseline", "at": "2026-10-24T00:00:00.000Z", "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z" }, "facts": { "title": "HSTS subdomain overwrites parent cache entry", "summary": "When curl is asked to use HSTS, the expiry time for a subdomain might\noverwrite a parent domain's cache entry, making it end sooner or later than\notherwise intended.\n\nThis affects curl using applications that enable HSTS and use URLs with the\ninsecure `HTTP://` scheme and perform transfers with hosts like\n`x.example.com` as well as `example.com` where the first host is a subdomain\nof the second host.\n\n(The HSTS cache either needs to have been populated manually or there needs to\nhave been previous HTTPS accesses done as the cache needs to have entries for\nthe domains involved to trigger this problem.)\n\nWhen `x.example.com` responds with `Strict-Transport-Security:` headers, this\nbug can make the subdomain's expiry timeout *bleed over* and get set for the\nparent domain `example.com` in curl's HSTS cache.\n\nThe result of a triggered bug is that HTTP accesses to `example.com` get\nconverted to HTTPS for a different period of time than what was asked for by\nthe origin server. If `example.com` for example stops supporting HTTPS at its\nexpiry time, curl might then fail to access `http://example.com` until the\n(wrongly set) timeout expires. This bug can also expire the parent's entry\n*earlier*, thus making curl inadvertently switch back to insecure HTTP earlier\nthan otherwise intended.", "affected": [ { "vendor": "curl", "product": "curl", "defaultStatus": "unaffected", "versions": [ { "version": "8.10.1", "status": "affected", "versionType": "semver", "lessThanOrEqual": "8.10.1" }, { "version": "8.10.0", "status": "affected", "versionType": "semver", "lessThanOrEqual": "8.10.0" }, { "version": "8.9.1", "status": "affected", "versionType": "semver", "lessThanOrEqual": "8.9.1" }, { "version": "8.9.0", "status": "affected", "versionType": "semver", "lessThanOrEqual": "8.9.0" }, { "version": "8.8.0", "status": "affected", "versionType": "semver", "lessThanOrEqual": "8.8.0" }, { "version": "8.7.1", "status": "affected", "versionType": "semver", "lessThanOrEqual": "8.7.1" }, { "version": "8.7.0", "status": "affected", "versionType": "semver", "lessThanOrEqual": "8.7.0" }, { "version": "8.6.0", "status": "affected", "versionType": "semver", "lessThanOrEqual": "8.6.0" }, { "version": "8.5.0", "status": "affected", "versionType": "semver", "lessThanOrEqual": "8.5.0" }, { "version": "8.4.0", "status": "affected", "versionType": "semver", "lessThanOrEqual": "8.4.0" }, { "version": "8.3.0", "status": "affected", "versionType": "semver", "lessThanOrEqual": "8.3.0" }, { "version": "8.2.1", "status": "affected", "versionType": "semver", "lessThanOrEqual": "8.2.1" }, { "version": "8.2.0", "status": "affected", "versionType": "semver", "lessThanOrEqual": "8.2.0" }, { "version": "8.1.2", "status": "affected", "versionType": "semver", "lessThanOrEqual": "8.1.2" }, { "version": "8.1.1", "status": "affected", "versionType": "semver", "lessThanOrEqual": "8.1.1" }, { "version": "8.1.0", "status": "affected", "versionType": "semver", "lessThanOrEqual": "8.1.0" }, { "version": "8.0.1", "status": "affected", "versionType": "semver", "lessThanOrEqual": "8.0.1" }, { "version": "8.0.0", "status": "affected", "versionType": "semver", "lessThanOrEqual": "8.0.0" }, { "version": "7.88.1", "status": "affected", "versionType": "semver", "lessThanOrEqual": "7.88.1" }, { "version": "7.88.0", "status": "affected", "versionType": "semver", "lessThanOrEqual": "7.88.0" }, { "version": "7.87.0", "status": "affected", "versionType": "semver", "lessThanOrEqual": "7.87.0" }, { "version": "7.86.0", "status": "affected", "versionType": "semver", "lessThanOrEqual": "7.86.0" }, { "version": "7.85.0", "status": "affected", "versionType": "semver", "lessThanOrEqual": "7.85.0" }, { "version": "7.84.0", "status": "affected", "versionType": "semver", "lessThanOrEqual": "7.84.0" }, { "version": "7.83.1", "status": "affected", "versionType": "semver", "lessThanOrEqual": "7.83.1" }, { "version": "7.83.0", "status": "affected", "versionType": "semver", "lessThanOrEqual": "7.83.0" }, { "version": "7.82.0", "status": "affected", "versionType": "semver", "lessThanOrEqual": "7.82.0" }, { "version": "7.81.0", "status": "affected", "versionType": "semver", "lessThanOrEqual": "7.81.0" }, { "version": "7.80.0", "status": "affected", "versionType": "semver", "lessThanOrEqual": "7.80.0" }, { "version": "7.79.1", "status": "affected", "versionType": "semver", "lessThanOrEqual": "7.79.1" }, { "version": "7.79.0", "status": "affected", "versionType": "semver", "lessThanOrEqual": "7.79.0" }, { "version": "7.78.0", "status": "affected", "versionType": "semver", "lessThanOrEqual": "7.78.0" }, { "version": "7.77.0", "status": "affected", "versionType": "semver", "lessThanOrEqual": "7.77.0" }, { "version": "7.76.1", "status": "affected", "versionType": "semver", "lessThanOrEqual": "7.76.1" }, { "version": "7.76.0", "status": "affected", "versionType": "semver", "lessThanOrEqual": "7.76.0" }, { "version": "7.75.0", "status": "affected", "versionType": "semver", "lessThanOrEqual": "7.75.0" }, { "version": "7.74.0", "status": "affected", "versionType": "semver", "lessThanOrEqual": "7.74.0" } ] } ] } } }