CVE-2020-26759
CRITICAL
9.8
CVSS Score
Published: January 6, 2021 at 12:56 PM UTC
Updated: June 17, 2026 at 03:08 AM UTC
1 product affected across 1 vendorClickhouse Driver
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Severity
CRITICAL9.8
Exploit prediction
EPSS 3%
Description
clickhouse-driver before 0.1.5 allows a malicious clickhouse server to trigger a crash or execute arbitrary code (on a database client) via a crafted server response, due to a buffer overflow.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
v < 0.1.5
Affected range stops below 0.1.5, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
References (2)
x_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://github.com/mymarilyn/clickhouse-driver/commit/3e990547e064b8fca916b23a0f7d6fe8c63c7f6bx_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://github.com/mymarilyn/clickhouse-driver/commit/d708ed548e1d6f254ba81a21de8ba543a53b5598CVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-120
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