Analyzed
Published: 12 Feb 2026, 13:00
Last modified:15 Jul 2026, 01:20

Vulnerability Summary

Overall Risk (default)
medium
33/100
CVSS Score
8.2 HIGH
v3.1 (cve.org)
EPSS Score
0.48% LOW
0% probability +0.46%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

12 Feb 2026, 13:00
Published
Vulnerability first disclosed
15 Jul 2026, 01:20
Last Modified
Vulnerability information updated

Description

Heap buffer overflow in PostgreSQL pg_trgm allows a database user to achieve unknown impacts via a crafted input string. The attacker has limited control over the byte patterns to be written, but we have not ruled out the viability of attacks that lead to privilege escalation. PostgreSQL 18.1 and 18.0 are affected.

CVSS Metrics

  • v3.1HIGHScore: 8.2CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H

EPSS Trends

Current EPSS score: 0.48% Percentile: 38%

Techniques & Countermeasures

  • CWE-122Heap-based Buffer Overflow

    A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().

  • CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

    The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer.

Affected Systems

  • postgresqlpostgresql

    ≥ 18.0, < 18.2

References (6)