Security readout for executives and security teams
Plain-English summary
CVE-2026-3293 affects Snowflake’s JDBC driver versions 4.0.0 and 4.0.1. A local, low-privileged user who can influence the nonProxyHosts JDBC URL value may trigger excessive regular-expression processing, causing limited availability impact. This is not reported as remotely exploitable or actively exploited in the provided sources.
Executive priority
Treat as a targeted availability risk, not an emergency remote-compromise issue. Prioritize remediation for shared servers, developer platforms, and applications where untrusted local users or automation can alter Snowflake JDBC connection settings.
Technical view
The issue is a ReDoS/resource-consumption weakness in SdkProxyRoutePlanner.java within the JDBC URL handler. Manipulating nonProxyHosts can create inefficient regex complexity. Sources map it to CWE-1333 and CWE-400, CVSS 4.0 score 4.8, AV:L/PR:L/VA:L. A public exploit reference and patch commit are listed.
Likely exposure
Exposure is likely limited to environments running snowflake-jdbc 4.0.0 or 4.0.1 where local users or local application inputs can control JDBC URL nonProxyHosts. Systems using other versions are not identified as affected in the provided bundle.
Exploitation context
The source bundle states exploitation requires local access and low privileges, with no user interaction. Public exploit material is referenced, but CISA KEV is false and no cited source confirms active exploitation in the wild.
Researcher notes
Evidence is primarily from VulDB/CVE metadata, GitHub issue tracking, and a patch commit. The bundle names affected versions and the vulnerable component, but does not provide a fixed release number. Avoid assuming broader Snowflake platform exposure beyond the JDBC driver.
Mitigation direction
- Inventory applications using snowflake-jdbc 4.0.0 or 4.0.1.
- Apply the vendor patch commit or a vendor-recommended fixed release when available.
- Restrict who can modify JDBC URLs and proxy-related connection settings.
- Monitor vendor issue and advisory pages for final release guidance.
Validation and detection
- Check dependency manifests and runtime classpaths for snowflake-jdbc versions 4.0.0 or 4.0.1.
- Review application configuration paths that set JDBC URL nonProxyHosts.
- Confirm whether the referenced patch commit is present in deployed driver code.
- Document compensating controls limiting local configuration manipulation.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-1333: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCWE-400: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2026-3293 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 4.8 (4.0)
- Known Exploited
- No
- Published
Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P——Primary CVE scoreVulnerability scoring details
Base CVSS 4.0 score
4.8MediumVector: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
Source materials
- CVE List V5 sourceCVE List V5
- VDB-348035 | snowflakedb snowflake-jdbc JDBC URL SdkProxyRoutePlanner.java SdkProxyRoutePlanner redosCVE reference · vdb-entry, technical-description
- VDB-348035 | CTI Indicators (IOB, IOC, TTP, IOA)CVE reference · signature, permissions-required
- Submit #760428 | snowflake snowflake-jdbc v4.0.1 ReDOSCVE reference · third-party-advisory
- https://github.com/snowflakedb/snowflake-jdbc/issues/2505CVE reference · issue-tracking, exploit
- https://snowflakecomputing.atlassian.net/browse/SNOW-3104251CVE reference · related
- https://github.com/snowflakedb/snowflake-jdbc/commit/5fb0a8a318a2ed87f4022a1f56e742424ba94052CVE reference · patch
- https://github.com/snowflakedb/snowflake-jdbc/CVE reference · product
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.