{"schemaVersion":3,"id":"CVE-2023-41335","aliases":["GHSA-4f74-84v3-j9q5","PYSEC-2023-185","UBUNTU-CVE-2023-41335","DEBIAN-CVE-2023-41335"],"status":"published","duplicateOf":null,"title":null,"description":"Synapse is an open-source Matrix homeserver written and maintained by the Matrix.org Foundation. When users update their passwords, the new credentials may be briefly held in the server database. While this doesn't grant the server any added capabilities—it already learns the users' passwords as part of the authentication process—it does disrupt the expectation that passwords won't be stored in the database. As a result, these passwords could inadvertently be captured in database backups for a longer duration. These temporarily stored passwords are automatically erased after a 48-hour window. This issue has been addressed in version 1.93.0. Users are advised to upgrade. There are no known workarounds for this issue.","dates":{"published":"2023-09-26T20:51:29.741Z","modified":"2025-02-13T17:09:01.354Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":3.7,"severity":"low","version":"3.1","versionLabel":"v3.1","source":"CVE.org","vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:C/C:L/I:L/A:N","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":3.7,"severity":"low","vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:C/C:L/I:L/A:N","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Pypi","score":3.7,"severity":"low","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N","exploitability":3.1,"impact":4.2,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Ubuntu","score":3.7,"severity":"low","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N","exploitability":3.1,"impact":4.2,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Debian","score":3.7,"severity":"low","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N","exploitability":3.1,"impact":4.2,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":3.7,"severity":"low","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00387,"percentile":0.31281,"severity":"low","asOf":"2026-10-19T00:00:00.000Z","change":{"pp":0.025000000000000022,"baselineDate":"2026-09-19T00:00:00.000Z","baselineScore":0.00362},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.00362,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.00362,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.00362,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.00362,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.00362,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.00362,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00362,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00362,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00362,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00362,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00362,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00362,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00362,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00387,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00387,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00387,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00387,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00387,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00387,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00387,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00387,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00387,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00387,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00387,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00387,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00387,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00387,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00387,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00387,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00387,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00387,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00387,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00387,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00387,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00387,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00387,"percentile":0.31281}],"last30":[{"date":"2026-09-19T00:00:00.000Z","score":0.00362,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00362,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00362,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00362,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00362,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00362,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00362,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00362,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00387,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00387,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00387,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00387,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00387,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00387,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00387,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00387,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00387,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00387,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00387,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00387,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00387,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00387,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00387,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00387,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00387,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00387,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00387,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00387,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00387,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00387,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00387,"percentile":0.31281}]},"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":[{"id":"CWE-312","name":"Cleartext Storage of Sensitive Information","description":"The product stores sensitive information in cleartext within a resource that might be accessible to another control sphere.","type":"weakness","status":"Draft","abstraction":"Base","likelihoodOfExploit":null,"url":"https://cwe.mitre.org/data/definitions/312.html"}],"affected":[{"vendor":"debian","product":"matrix-synapse","name":"matrix-synapse","label":"matrix-synapse","ecosystem":"Debian","cpePart":null,"purl":"pkg:deb/debian/matrix-synapse","purlType":"deb","versions":[{"text":"< 1.93.0-1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 1.93.0-1","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"matrix-synapse","name":"matrix-synapse","label":"matrix-synapse","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/matrix-synapse","purlType":"deb","versions":[{"text":"< 1.53.0-1ubuntu0.1~esm2","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 1.53.0-1ubuntu0.1~esm2","eol":null,"hubHref":null},{"vendor":"fedoraproject","product":"fedora","name":"fedora","label":"fedora","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"37","noFixRecorded":false,"fixedIn":null},{"text":"38","noFixRecorded":false,"fixedIn":null}],"versionsText":"37 | 38","eol":{"isEol":true,"eolDate":"2023-12-05T00:00:00.000Z","matchMethod":"cpe","cycle":{"name":"37","label":"37","eolFrom":"2023-12-05T00:00:00.000Z","isLts":false,"isMaintained":false,"latestVersion":null},"product":{"name":"fedora","label":"Fedora Linux","category":"os"}},"hubHref":"/vendor/fedoraproject/fedora"},{"vendor":"matrix-org","product":"synapse","name":"synapse","label":"synapse","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 1.66.0, < 1.93.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 1.66.0, < 1.93.0","eol":null,"hubHref":"/vendor/matrix-org/synapse"},{"vendor":"matrix","product":"synapse","name":"synapse","label":"synapse","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 1.66.0, < 1.93.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 1.66.0, < 1.93.0","eol":null,"hubHref":"/vendor/matrix/synapse"},{"vendor":"PyPI","product":"matrix-synapse","name":"matrix-synapse","label":"matrix-synapse","ecosystem":"PyPI","cpePart":null,"purl":"pkg:pypi/matrix-synapse","purlType":"pypi","versions":[{"text":"≥ 1.66.0, < 1.93.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 1.66.0, < 1.93.0","eol":null,"hubHref":null}],"affectedCount":6,"eol":{"hasEol":true,"count":1},"references":[{"url":"https://github.com/matrix-org/synapse/security/advisories/GHSA-4f74-84v3-j9q5","label":"github.com/matrix-org/synapse/security/advisories/GHSA-4f74-84v3-j9q5","hostname":"github.com","tags":["X Refsource CONFIRM","WEB","Advisory","REPORT","Patch","Vendor Advisory"]},{"url":"https://github.com/matrix-org/synapse/pull/16272","label":"github.com/matrix-org/synapse/pull/16272","hostname":"github.com","tags":["X Refsource MISC","WEB","FIX","REPORT","Patch"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/65QPC55I4D27HIZP7H2NQ34EOXHPP4AO/","label":"lists.fedoraproject.org/archives/…","hostname":"lists.fedoraproject.org","tags":["Mailing List","Release Notes"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2AFB2Y3S2VCPCN5P2XCZTG24MBMZ7DM4/","label":"lists.fedoraproject.org/archives/…","hostname":"lists.fedoraproject.org","tags":["Mailing List","Release Notes"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/N6P4QULVUE254WI7XF2LWWOGHCYVFXFY/","label":"lists.fedoraproject.org/archives/…","hostname":"lists.fedoraproject.org","tags":[]},{"url":"https://security.gentoo.org/glsa/202401-12","label":"security.gentoo.org/glsa/202401-12","hostname":"security.gentoo.org","tags":["WEB"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-41335","label":"nvd.nist.gov/vuln/detail/CVE-2023-41335","hostname":"nvd.nist.gov","tags":["Advisory"]},{"url":"https://github.com/matrix-org/synapse/pull/13188","label":"github.com/matrix-org/synapse/pull/13188","hostname":"github.com","tags":["WEB"]},{"url":"https://github.com/matrix-org/synapse/commit/69b74d9330e42fc91a9c7423d00a06cd6d3732bf","label":"github.com/matrix-org/synapse/commit/69b74d9330e42fc91a9c7423d00a06cd6d3732bf","hostname":"github.com","tags":["WEB"]},{"url":"https://github.com/matrix-org/synapse","label":"github.com/matrix-org/synapse","hostname":"github.com","tags":["PACKAGE"]},{"url":"https://github.com/pypa/advisory-database/tree/main/vulns/matrix-synapse/PYSEC-2023-185.yaml","label":"github.com/pypa/advisory-database/tree/main/vulns/matrix-synapse/PYSEC-2023-185.yaml","hostname":"github.com","tags":["WEB"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2AFB2Y3S2VCPCN5P2XCZTG24MBMZ7DM4","label":"lists.fedoraproject.org/archives/…","hostname":"lists.fedoraproject.org","tags":["WEB"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/65QPC55I4D27HIZP7H2NQ34EOXHPP4AO","label":"lists.fedoraproject.org/archives/…","hostname":"lists.fedoraproject.org","tags":["WEB"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/N6P4QULVUE254WI7XF2LWWOGHCYVFXFY","label":"lists.fedoraproject.org/archives/…","hostname":"lists.fedoraproject.org","tags":["WEB"]},{"url":"https://ubuntu.com/security/CVE-2023-41335","label":"ubuntu.com/security/CVE-2023-41335","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2023-41335","label":"www.cve.org/CVERecord?id=CVE-2023-41335","hostname":"www.cve.org","tags":["REPORT"]},{"url":"https://ubuntu.com/security/notices/USN-7444-1","label":"ubuntu.com/security/notices/USN-7444-1","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2023-41335","label":"security-tracker.debian.org/tracker/CVE-2023-41335","hostname":"security-tracker.debian.org","tags":["Advisory"]}],"lineage":{"upstream":[],"downstream":["OPENSUSE-SU-2024:13270-1","USN-7444-1"],"duplicates":[],"related":["OPENSUSE-SU-2024:13270-1","USN-7444-1"]},"timeline":[{"kind":"published","date":"2023-09-26T20:51:29.741Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2025-02-13T17:09:01.354Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":15,"level":"low","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-20T02:23:52.474Z","stale":false,"partial":false}}