{"id":"CVE-2026-16870","state":"PUBLISHED","title":"Multiple Security Vulnerabilities in Snowflake libsnowflakeclient","description":"Multiple security vulnerabilities in Snowflake libsnowflakeclient versions prior to 2.9.2 could allow remote code execution and credential exfiltration. A stack-based buffer overflow in the file download path could allow remote code execution on a victim host. An attacker could exploit this by uploading a file with a crafted encryption metadata field to a shared internal stage that a victim process later downloads, and impact would be limited to deployments where principals with different privilege levels share the same internal stage. A related out-of-bounds write in the same download path could allow memory corruption with attacker-controlled write primitives. An attacker may exploit this through a crafted initialization vector metadata field on a shared stage, and impact would be limited by the same stage-write precondition. Improper validation of connection parameters could allow an attacker-controlled input to redirect outbound authentication requests — including credentials and tokens — to an attacker-controlled endpoint. Impact is limited to embedding deployments where a lower-privileged principal can influence connection configuration while higher-privileged service credentials are in use. The fix is available in Snowflake libsnowflakeclient version 2.9.2. The Snowflake PHP PDO Driver and Snowflake ODBC Driver embed the affected library; fixes are available in versions 4.1.0 and 3.19.0 respectively. Users must manually upgrade.","publishedAt":"2026-07-24T04:40:41.019Z","updatedAt":"2026-07-24T17:23:49.204Z","severity":{"score":8.8,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","source":"SNOWFLAKE"},"assigner":"SNOWFLAKE","products":["Snowflake Snowflake libsnowflakeclient","Snowflake Snowflake PHP PDO Driver","Snowflake Snowflake ODBC Driver"],"affected":[{"vendor":"Snowflake","product":"Snowflake libsnowflakeclient","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"2.9.2","versionType":"semver"}]},{"vendor":"Snowflake","product":"Snowflake PHP PDO Driver","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"4.1.0","versionType":"semver"}]},{"vendor":"Snowflake","product":"Snowflake ODBC Driver","defaultStatus":"unaffected","versions":[{"version":"2.16.3","status":"affected","lessThan":"3.19.0","versionType":"semver"}]}],"references":["https://github.com/snowflakedb/libsnowflakeclient/releases/tag/v2.9.2"],"weaknesses":["CWE-121","CWE-787","CWE-918"],"ingestedAt":"2026-10-29T20:11:00.674Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/16xxx/CVE-2026-16870.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-16870","state":"PUBLISHED","datePublished":"2026-07-24T04:40:41.019Z","dateUpdated":"2026-07-24T17:23:49.204Z","assignerShortName":"SNOWFLAKE","assignerOrgId":"412d305a-227d-44f9-a262-a31ba44f2aea","dateReserved":"2026-07-24T04:22:39.270Z"},"containers":{"cna":{"title":"Multiple Security Vulnerabilities in Snowflake libsnowflakeclient","descriptions":[{"lang":"en","value":"Multiple security vulnerabilities in Snowflake libsnowflakeclient versions prior to 2.9.2 could allow remote code execution and credential exfiltration. A stack-based buffer overflow in the file download path could allow remote code execution on a victim host. An attacker could exploit this by uploading a file with a crafted encryption metadata field to a shared internal stage that a victim process later downloads, and impact would be limited to deployments where principals with different privilege levels share the same internal stage. A related out-of-bounds write in the same download path could allow memory corruption with attacker-controlled write primitives. An attacker may exploit this through a crafted initialization vector metadata field on a shared stage, and impact would be limited by the same stage-write precondition. Improper validation of connection parameters could allow an attacker-controlled input to redirect outbound authentication requests — including credentials and tokens — to an attacker-controlled endpoint. Impact is limited to embedding deployments where a lower-privileged principal can influence connection configuration while higher-privileged service credentials are in use. The fix is available in Snowflake libsnowflakeclient version 2.9.2. The Snowflake PHP PDO Driver and Snowflake ODBC Driver embed the affected library; fixes are available in versions 4.1.0 and 3.19.0 respectively. Users must manually upgrade."}],"affected":[{"vendor":"Snowflake","product":"Snowflake libsnowflakeclient","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"2.9.2","versionType":"semver"}]},{"vendor":"Snowflake","product":"Snowflake PHP PDO Driver","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"4.1.0","versionType":"semver"}]},{"vendor":"Snowflake","product":"Snowflake ODBC Driver","defaultStatus":"unaffected","versions":[{"version":"2.16.3","status":"affected","lessThan":"3.19.0","versionType":"semver"}]}],"references":[{"url":"https://github.com/snowflakedb/libsnowflakeclient/releases/tag/v2.9.2","name":"Snowflake Libsnowflakeclient Release Notes"}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV3_1":{"version":"3.1","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH","baseScore":8.8,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-121","lang":"en","description":"Stack-based Buffer Overflow","type":"CWE"},{"cweId":"CWE-787","lang":"en","description":"Out-of-bounds Write","type":"CWE"},{"cweId":"CWE-918","lang":"en","description":"Server-Side Request Forgery (SSRF)","type":"CWE"}]}],"providerMetadata":{"shortName":"SNOWFLAKE","orgId":"412d305a-227d-44f9-a262-a31ba44f2aea","dateUpdated":"2026-07-24T17:23:49.204Z"},"x_generator":{"engine":"cvelib 1.8.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-24T12:27:51.298058Z","id":"CVE-2026-16870","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-07-24T12:28:00.052Z"}}]}}}