SB20260827150 - Input validation error in MapServer

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Main Vulnerability Database SB20260827150

SB20260827150 - Input validation error in MapServer

Published: August 27, 2026

Security Bulletin ID SB20260827150
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Input validation error (CVE-ID: N/A)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to improper input validation in the WCS 2.0 GetCoverage request handling when processing the RESOLUTION parameter. A remote attacker can send a specially crafted request with a non-positive RESOLUTION value to cause a denial of service.

A negative RESOLUTION value can terminate the handling CGI or FastCGI worker via exit(1), and repeated requests can deplete the worker pool.


Remediation

Install update from vendor's website.

References