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TI-2023-26161 Aliases CVE-2023-48298

Integer underflow leading to stack overflow in FPC codec decompression

Priority LOW 34CWE-191Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · 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

ClickHouse® is an open-source column-oriented database management system that allows generating analytical data reports in real-time. This vulnerability is an integer underflow resulting in crash due to stack buffer overflow in decompression of FPC codec. It can be triggered and exploited by an unauthenticated attacker. The vulnerability is very similar to CVE-2023-47118 with how the vulnerable function can be exploited.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00634 50th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
ClickHouseClickHouseup to 23.10.2.14—No fix listedCNA
  • ClickHouse VendorClickHouse Affected up to 23.10.2.14 Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:clickhouse:clickhouse:*:*:*:*:*:*:*:*23.3 – 23.3.17.13; 23.8 – 23.8.7.24; 23.9 – 23.9.5.29; 23.10 – 23.10.4.25VulnerableClickHouse
cpe:2.3:a:clickhouse:clickhouse_cloud:*:*:*:*:*:*:*:*23.9 – 23.9.2.47475VulnerableClickHouse
  • cpe:2.3:a:clickhouse:clickhouse:*:*:*:*:*:*:*:* Versions 23.3 – 23.3.17.13; 23.8 – 23.8.7.24; 23.9 – 23.9.5.29; 23.10 – 23.10.4.25 Vulnerable ·ClickHouse
  • cpe:2.3:a:clickhouse:clickhouse_cloud:*:*:*:*:*:*:*:* Versions 23.9 – 23.9.2.47475 Vulnerable ·ClickHouse

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-48298
  2. 2026-10-25 EPSS moved to the 50th–90th percentile

References

Patch 1

Advisory 1

  • 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-2019-12398 Out-of-bounds read in ClickHouse CVSS 3.1CRITICAL 9.8
See all 23 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences