{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-121925", "assignerOrgId": "412d305a-227d-44f9-a262-a31ba44f2aea", "state": "PUBLISHED", "assignerShortName": "SNOWFLAKE", "dateReserved": "2026-11-04T11:24:43.550Z", "datePublished": "2026-11-04T11:28:56.733Z", "dateUpdated": "2026-11-04T11:28:56.733Z"}, "containers": {"cna": {"title": "Buffer overflow in SAML authentication post-back URL handling in libsnowflakeclient and Snowflake PHP PDO Driver", "descriptions": [{"lang": "en", "value": "A stack-based buffer overflow in libsnowflakeclient and the Snowflake PHP PDO Driver could, under specific conditions, result in memory corruption during SAML-based authentication. During a native SSO/SAML login flow, the affected drivers may have copied a value taken from the identity provider's HTML response into a fixed-size memory buffer without first validating the length of that value. An attacker who controlled or had compromised the configured identity provider \u2014 or who was able to redirect the SAML single sign-on endpoint to an attacker-controlled server \u2014 might have leveraged this by returning an oversized response, potentially resulting in a crash or, in specific circumstances, remote code execution within the context of the application running the library. The fix is available in libsnowflakeclient version 2.11.1 and Snowflake PHP PDO Driver version 4.3.0. Users must manually upgrade."}], "affected": [{"vendor": "Snowflake", "product": "Snowflake PHP PDO Driver", "repo": "https://github.com/snowflakedb/pdo_snowflake", "versions": [{"version": "3.2.0", "lessThan": "4.3.0", "versionType": "semver", "status": "affected"}], "defaultStatus": "unaffected"}, {"vendor": "Snowflake", "product": "Snowflake Libsnowflakeclient", "repo": "https://github.com/snowflakedb/libsnowflakeclient", "versions": [{"version": "2.1.0", "lessThan": "2.11.1", "versionType": "semver", "status": "affected"}], "defaultStatus": "unaffected"}], "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-121", "description": "Stack-based Buffer Overflow", "type": "CWE"}]}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "attackVector": "NETWORK", "attackComplexity": "HIGH", "privilegesRequired": "HIGH", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH", "baseScore": 6.6, "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H"}}], "references": [{"url": "https://docs.snowflake.com/en/release-notes/clients-drivers/php-pdo-2026#version-430-oct-1-2026", "name": "Snowflake PHP PDO Driver Release Notes"}, {"url": "https://github.com/snowflakedb/libsnowflakeclient/releases/tag/v2.11.1", "name": "Snowflake Libsnowflakeclient Release Notes"}], "providerMetadata": {"orgId": "412d305a-227d-44f9-a262-a31ba44f2aea", "shortName": "SNOWFLAKE", "dateUpdated": "2026-11-04T11:28:56.733Z"}, "x_generator": {"engine": "cvelib 1.8.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Snowflake PHP PDO Driver", "repo": "https://github.com/snowflakedb/pdo_snowflake", "vendor": "Snowflake", "versions": [{"lessThan": "4.3.0", "status": "affected", "version": "3.2.0", "versionType": "semver"}]}, {"defaultStatus": "unaffected", "product": "Snowflake Libsnowflakeclient", "repo": "https://github.com/snowflakedb/libsnowflakeclient", "vendor": "Snowflake", "versions": [{"lessThan": "2.11.1", "status": "affected", "version": "2.1.0", "versionType": "semver"}]}], "source": "412d305a-227d-44f9-a262-a31ba44f2aea"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A stack-based buffer overflow in libsnowflakeclient and the Snowflake PHP PDO Driver could, under specific conditions, result in memory corruption during SAML-based authentication. During a native SSO/SAML login flow, the affected drivers may have copied a value taken from the identity provider's HTML response into a fixed-size memory buffer without first validating the length of that value. An attacker who controlled or had compromised the configured identity provider \u2014 or who was able to redirect the SAML single sign-on endpoint to an attacker-controlled server \u2014 might have leveraged this by returning an oversized response, potentially resulting in a crash or, in specific circumstances, remote code execution within the context of the application running the library. The fix is available in libsnowflakeclient version 2.11.1 and Snowflake PHP PDO Driver version 4.3.0. Users must manually upgrade."}], "id": "CVE-2026-121925", "lastModified": "2026-11-04T12:17:06.577", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 6.6, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "HIGH", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 0.7, "impactScore": 5.9, "source": "412d305a-227d-44f9-a262-a31ba44f2aea", "type": "Secondary"}]}, "published": "2026-11-04T12:17:06.577", "references": [{"source": "412d305a-227d-44f9-a262-a31ba44f2aea", "url": "https://docs.snowflake.com/en/release-notes/clients-drivers/php-pdo-2026#version-430-oct-1-2026"}, {"source": "412d305a-227d-44f9-a262-a31ba44f2aea", "url": "https://github.com/snowflakedb/libsnowflakeclient/releases/tag/v2.11.1"}], "sourceIdentifier": "412d305a-227d-44f9-a262-a31ba44f2aea", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-121"}], "source": "412d305a-227d-44f9-a262-a31ba44f2aea", "type": "Secondary"}]}

{}

{"created": "2026-11-04T12:30:10.982034+00:00", "updated": "2026-11-04T12:30:10.982049+00:00", "vendors": []}