{"schemaVersion":3,"id":"CVE-2024-5699","aliases":["UBUNTU-CVE-2024-5699","CGA-h863-3pmv-7r68","CGA-pfp4-687q-c3mm","CGA-c792-hw2j-xc5m","CGA-xq5v-cxwc-4mwv"],"status":"published","duplicateOf":null,"title":null,"description":"In violation of spec, cookie prefixes such as `__Secure` were being ignored if they were not correctly capitalized - by spec they should be checked with a case-insensitive comparison. This could have resulted in the browser not correctly honoring the behaviors specified by the prefix. This vulnerability affects Firefox < 127.","dates":{"published":"2024-06-11T12:40:18.427Z","modified":"2024-08-12T17:08:34.616Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":9.8,"severity":"critical","version":"3.1","versionLabel":"v3.1","source":"CVE.org","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":9.8,"severity":"critical","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Ubuntu","score":9.8,"severity":"critical","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","exploitability":10,"impact":9.8,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Wolfi","score":9.8,"severity":"critical","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","exploitability":10,"impact":9.8,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Chainguard","score":9.8,"severity":"critical","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","exploitability":10,"impact":9.8,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":9.8,"severity":"critical","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00773,"percentile":0.55196,"severity":"low","asOf":"2026-10-21T00:00:00.000Z","change":{"pp":0,"baselineDate":"2026-09-21T00:00:00.000Z","baselineScore":0.00773},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.00773,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.00773,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.00773,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.00773,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.00773,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.00773,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00773,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00773,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00773,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00773,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00773,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00773,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00773,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00773,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00773,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00773,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00773,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00773,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00773,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00773,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00773,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00773,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00773,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00773,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00773,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00773,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00773,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00773,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00773,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00773,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00773,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00773,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00773,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00773,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00773,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00773,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00773,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.00773,"percentile":0.55196}],"last30":[{"date":"2026-09-21T00:00:00.000Z","score":0.00773,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00773,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00773,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00773,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00773,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00773,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00773,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00773,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00773,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00773,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00773,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00773,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00773,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00773,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00773,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00773,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00773,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00773,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00773,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00773,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00773,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00773,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00773,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00773,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00773,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00773,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00773,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00773,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00773,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00773,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.00773,"percentile":0.55196}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[{"id":"REF_12E5C7961617143C","name":"Exploit Reference (bugzilla.mozilla.org)","source":"reference","url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1891349","maturity":"unknown","reliabilityScore":0.2,"verified":false,"type":null,"platforms":[],"requiresAuth":null,"exploitdb":null,"metasploit":null}],"exploitCount":1,"weaknesses":[{"id":"CWE-178","name":"Improper Handling of Case Sensitivity","description":"The product does not properly account for differences in case sensitivity when accessing or determining the properties of a resource, leading to inconsistent results.","type":"weakness","status":"Incomplete","abstraction":"Base","likelihoodOfExploit":null,"url":"https://cwe.mitre.org/data/definitions/178.html"}],"affected":[{"vendor":"chainguard","product":"firefox","name":"firefox","label":"firefox","ecosystem":"Chainguard","cpePart":null,"purl":"pkg:apk/chainguard/firefox","purlType":"apk","versions":[{"text":"< 127.0.2-r0","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 127.0.2-r0","eol":null,"hubHref":null},{"vendor":"chainguard","product":"firefox-esr","name":"firefox-esr","label":"firefox-esr","ecosystem":"Chainguard","cpePart":null,"purl":"pkg:apk/chainguard/firefox-esr","purlType":"apk","versions":[{"text":"< 127-r0","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 127-r0","eol":null,"hubHref":null},{"vendor":"wolfi","product":"firefox","name":"firefox","label":"firefox","ecosystem":"Wolfi","cpePart":null,"purl":"pkg:apk/wolfi/firefox","purlType":"apk","versions":[{"text":"< 127.0.2-r0","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 127.0.2-r0","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"firefox","name":"firefox","label":"firefox","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/firefox","purlType":"deb","versions":[{"text":"< 127.0.2+build1-0ubuntu0.20.04.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 127.0.2+build1-0ubuntu0.20.04.1","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"mozjs102","name":"mozjs102","label":"mozjs102","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/mozjs102","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"mozjs38","name":"mozjs38","label":"mozjs38","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/mozjs38","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"mozjs52","name":"mozjs52","label":"mozjs52","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/mozjs52","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"mozjs68","name":"mozjs68","label":"mozjs68","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/mozjs68","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"mozjs78","name":"mozjs78","label":"mozjs78","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/mozjs78","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"mozjs91","name":"mozjs91","label":"mozjs91","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/mozjs91","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"mozilla","product":"firefox","name":"Firefox","label":"firefox","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ unspecified, < 127","noFixRecorded":false,"fixedIn":null},{"text":"< 127.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ unspecified, < 127 | < 127.0","eol":{"isEol":null,"eolDate":null,"matchMethod":"cpe","cycle":null,"product":{"name":"firefox","label":"Firefox","category":"app"}},"hubHref":"/vendor/mozilla/firefox"}],"affectedCount":11,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1891349","label":"bugzilla.mozilla.org/show_bug.cgi?id=1891349","hostname":"bugzilla.mozilla.org","tags":["REPORT","Exploit","Issue Tracking"]},{"url":"https://www.mozilla.org/security/advisories/mfsa2024-25/","label":"www.mozilla.org/security/advisories/mfsa2024-25/","hostname":"www.mozilla.org","tags":["REPORT","Advisory","Vendor Advisory"]},{"url":"https://ubuntu.com/security/CVE-2024-5699","label":"ubuntu.com/security/CVE-2024-5699","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2024-5699","label":"www.cve.org/CVERecord?id=CVE-2024-5699","hostname":"www.cve.org","tags":["REPORT"]},{"url":"https://www.mozilla.org/en-US/security/advisories/mfsa2024-25/#CVE-2024-5699","label":"www.mozilla.org/en-US/security/advisories/mfsa2024-25/","hostname":"www.mozilla.org","tags":["REPORT"]},{"url":"https://ubuntu.com/security/notices/USN-6862-1","label":"ubuntu.com/security/notices/USN-6862-1","hostname":"ubuntu.com","tags":["Advisory"]}],"lineage":{"upstream":[],"downstream":["OPENSUSE-SU-2024:14044-1","OPENSUSE-SU-2024:14572-1","USN-6862-1"],"duplicates":[],"related":["CGA-GC3W-RGV9-H6M4","CGA-J89C-6JHP-9V9R","OPENSUSE-SU-2024:14044-1","OPENSUSE-SU-2024:14572-1","USN-6862-1"]},"timeline":[{"kind":"published","date":"2024-06-11T12:40:18.427Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2024-08-12T17:08:34.616Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":70,"level":"high","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-22T12:28:45.861Z","stale":false,"partial":false}}