Out-of-bounds read in ClickHouse
Priority MEDIUM 45CWE-125Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-191 and the CVSS impact.
Summary
In all versions of ClickHouse before 19.14, an OOB read, OOB write and integer underflow in decompression algorithms can be used to achieve RCE or DoS via native protocol.
Why it matters now
EPSS 0.01695 77th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | ClickHouse | All versions prior to version 19.14. | — | No fix listed | CNA |
- ClickHouse Vendor— Affected All versions prior to version 19.14. Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:clickhouse:clickhouse:*:*:*:*:*:*:*:* | before 19.14 | Vulnerable | ClickHouse |
- cpe:2.3:a:clickhouse:clickhouse:*:*:*:*:*:*:*:* Versions before 19.14 Vulnerable ·ClickHouse
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2019-16535
- 2026-10-03 Alias added: GHSA-x3fg-74w9-f5r4
References
More Clickhouse vulnerabilities
- TI-2026-79288 Out-of-bounds write in Google Brotli decoder KEVCVSS 4.0CRITICAL 9.2
- TI-2024-27624 ClickHouse v24.3.3.102 was discovered to contain a buffer overflow via the component DB::evaluateConstantExpressionImpl. CVSS 3.1HIGH 7.5
- TI-2024-14986 ClickHouse's Role-based Access Control is bypassed when query caching is enabled. CVSS 3.1MEDIUM 4.9
- TI-2018-10534 Improper input validation in ClickHouse CVSS 3.0CRITICAL 9.8
- TI-2018-10533 Incorrect configuration in deb package in ClickHouse before 1.1.54131 could lead to unauthorized use of the database. CVSS 3.0CRITICAL 9.8
- TI-2019-12399 Buffer overflow in ClickHouse DB CVSS 4.0HIGH 8.2
Sources
- CVE-2019-16535 · CVE Program
- CVE-2019-16535 · NVD
- FIRST EPSS
- GHSA-x3fg-74w9-f5r4 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences