{"schemaVersion":3,"id":"MGASA-2026-0357","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"Updated varnish packages fix security vulnerabilities\n\nThe updated packages fix security vulnerabilities:\nVarnish Cache before 8.0.1 and Varnish Enterprise before 6.0.16r12, in\ncertain unchecked req.url scenarios, mishandle URLs with a path of / for\nHTTP/1.1, potentially leading to cache poisoning or authentication\nbypass. (CVE-2026-34475)\nIn Vinyl Cache before 9.0.1 and Varnish Cache before 9.0.3, a deficiency\nin HTTP/2 request parsing can be exploited to launch a backend request\ndesync attack (request smuggling), which in turn can be used for cache\npoisoning, authentication bypass, or possibly even information\ndisclosure and manipulation. The attack vector only exists if HTTP/2\nsupport is enabled by setting the feature parameter to contain +http2.\nHTTP/2 support is disabled by default. (CVE-2026-50052)","dates":{"published":"2026-09-01T03:06:53.000Z","modified":"2026-09-01T03:15:03.591Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":null,"severity":"unknown","version":null,"versionLabel":null,"source":null,"vector":null,"computed":false,"selection":"none"},"metrics":[]},"epss":{"probability":null,"percentile":null,"severity":"unknown","asOf":null,"change":{"pp":null,"baselineDate":null,"baselineScore":null},"history":[],"last30":[]},"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":[],"exploitCount":0,"weaknesses":[],"affected":[{"vendor":"mageia","product":"varnish","name":"varnish","label":"varnish","ecosystem":"Mageia","cpePart":null,"purl":"pkg:rpm/mageia/varnish","purlType":"rpm","versions":[{"text":"< 8.0.2-2.mga10","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 8.0.2-2.mga10","eol":null,"hubHref":null},{"vendor":"mageia","product":"varnish","name":"varnish","label":"varnish","ecosystem":"Mageia","cpePart":null,"purl":"pkg:rpm/mageia/varnish","purlType":"rpm","versions":[{"text":"< 7.7.3-1.1.mga9","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 7.7.3-1.1.mga9","eol":null,"hubHref":null}],"affectedCount":2,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://advisories.mageia.org/MGASA-2026-0357.html","label":"advisories.mageia.org/MGASA-2026-0357.html","hostname":"advisories.mageia.org","tags":["Advisory"]},{"url":"https://bugs.mageia.org/show_bug.cgi?id=35703","label":"bugs.mageia.org/show_bug.cgi?id=35703","hostname":"bugs.mageia.org","tags":["REPORT"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QTQ3IFV7A766BA4ZMWNVCZOAN3FGCW2J/","label":"lists.fedoraproject.org/archives/…","hostname":"lists.fedoraproject.org","tags":["WEB"]},{"url":"https://vinyl-cache.org/security/VSV00018.html","label":"vinyl-cache.org/security/VSV00018.html","hostname":"vinyl-cache.org","tags":["WEB"]},{"url":"https://vinyl-cache.org/security/VSV00019.html","label":"vinyl-cache.org/security/VSV00019.html","hostname":"vinyl-cache.org","tags":["WEB"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/W24WNWHXMWTWVX7NH65HHLBVOBMB3QGQ/","label":"lists.fedoraproject.org/archives/…","hostname":"lists.fedoraproject.org","tags":["WEB"]}],"lineage":{"upstream":["CVE-2026-34475","CVE-2026-50052"],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2026-09-01T03:06:53.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-09-01T03:15:03.591Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":0,"level":"minimal","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-20T18:04:38.568Z","stale":false,"partial":false}}