{"schemaVersion":3,"id":"CVE-2026-48775","aliases":["GHSA-fjqc-hq36-qh5p","PYSEC-2026-2573"],"status":"published","duplicateOf":null,"title":null,"description":"LangGraph SQLite Checkpoint is an implementation of LangGraph CheckpointSaver that uses SQLite DB (both sync and async, via aiosqlite). In versions 4.1.0 and prior, the JsonPlusSerializer can reconstruct Python objects from JSON checkpoint payloads. Under conditions where someone could modify checkpoint bytes at rest in the backing store, the deserialization path could reconstruct objects beyond what the application expects, which could in turn result in code execution at checkpoint load time. This is a defense-in-depth issue. The affected behavior is reachable only when checkpoint bytes at rest in the backing store can be modified by an unauthorized party. In most deployments that prerequisite already implies a serious incident; the additional concern is turning \"checkpoint-store write access\" into code execution in the application runtime. This issue has been fixed in version 4.1.1.","dates":{"published":"2026-06-16T17:53:10.808Z","modified":"2026-06-16T18:42:07.221Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":6.8,"severity":"medium","version":"3.1","versionLabel":"v3.1","source":"CVE.org","vector":"CVSS:3.1/AV:A/AC:L/PR:H/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":6.8,"severity":"medium","vector":"CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Pypi","score":6.8,"severity":"medium","vector":"CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","exploitability":2.3,"impact":9.8,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":6.8,"severity":"medium","vector":"CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00685,"percentile":0.51721,"severity":"low","asOf":"2026-10-19T00:00:00.000Z","change":{"pp":0.453,"baselineDate":"2026-09-19T00:00:00.000Z","baselineScore":0.00232},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.00232,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.00232,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.00232,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.00232,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.00232,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.00232,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00232,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00232,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00232,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00232,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00685,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00685,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00685,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00685,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00685,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00685,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00685,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00685,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00685,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00685,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00685,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00685,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00685,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00685,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00685,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00685,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00685,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00685,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00685,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00685,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00685,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00685,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00685,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00685,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00685,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00685,"percentile":0.51721}],"last30":[{"date":"2026-09-19T00:00:00.000Z","score":0.00232,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00232,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00232,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00232,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00232,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00685,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00685,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00685,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00685,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00685,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00685,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00685,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00685,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00685,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00685,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00685,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00685,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00685,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00685,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00685,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00685,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00685,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00685,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00685,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00685,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00685,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00685,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00685,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00685,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00685,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00685,"percentile":0.51721}]},"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-502","name":"Deserialization of Untrusted Data","description":"The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.","type":"weakness","status":"Draft","abstraction":"Base","likelihoodOfExploit":"Medium","url":"https://cwe.mitre.org/data/definitions/502.html"},{"id":"CWE-913","name":"Improper Control of Dynamically-Managed Code Resources","description":"The product does not properly restrict reading from or writing to dynamically-managed code resources such as variables, objects, classes, attributes, functions, or executable instructions or statements.","type":"weakness","status":"Incomplete","abstraction":"Class","likelihoodOfExploit":null,"url":"https://cwe.mitre.org/data/definitions/913.html"}],"affected":[{"vendor":"langchain-ai","product":"langgraph","name":"langgraph","label":"langgraph","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"< 1.2.2","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 1.2.2","eol":null,"hubHref":"/vendor/langchain-ai/langgraph"},{"vendor":"langchain-ai","product":"langraph-checkpoint","name":"langraph-checkpoint","label":"langraph-checkpoint","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"< 4.1.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 4.1.1","eol":null,"hubHref":"/vendor/langchain-ai/langraph-checkpoint"},{"vendor":"langchain","product":"langgraph-checkpoint","name":"langgraph-checkpoint","label":"langgraph-checkpoint","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"< 4.1.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 4.1.1","eol":null,"hubHref":"/vendor/langchain/langgraph-checkpoint"},{"vendor":"PyPI","product":"langgraph-checkpoint","name":"langgraph-checkpoint","label":"langgraph-checkpoint","ecosystem":"PyPI","cpePart":null,"purl":"pkg:pypi/langgraph-checkpoint","purlType":"pypi","versions":[{"text":"< 4.1.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 4.1.1","eol":null,"hubHref":null}],"affectedCount":4,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://github.com/langchain-ai/langgraph/security/advisories/GHSA-fjqc-hq36-qh5p","label":"github.com/langchain-ai/langgraph/security/advisories/GHSA-fjqc-hq36-qh5p","hostname":"github.com","tags":["X Refsource CONFIRM","WEB","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-48775","label":"nvd.nist.gov/vuln/detail/CVE-2026-48775","hostname":"nvd.nist.gov","tags":["Advisory"]},{"url":"https://github.com/langchain-ai/langgraph","label":"github.com/langchain-ai/langgraph","hostname":"github.com","tags":["PACKAGE"]},{"url":"https://pypi.org/project/langgraph-checkpoint","label":"pypi.org/project/langgraph-checkpoint","hostname":"pypi.org","tags":["PACKAGE"]},{"url":"https://github.com/advisories/GHSA-fjqc-hq36-qh5p","label":"github.com/advisories/GHSA-fjqc-hq36-qh5p","hostname":"github.com","tags":["Advisory"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2026-06-16T17:53:10.808Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-06-16T18:42:07.221Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":27,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-20T10:32:26.859Z","stale":false,"partial":false}}