Vulnerability · Published Apr 21, 2026 · Assigned by INCIBE

CVE-2026-5789Search path without quotes in CivetWeb

High 8.5

In plain English

A high-severity security flaw in CivetWeb from CivetWeb. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 3% of all known vulnerabilities).

Severity (CVSS 4.0)8.5High

Exploit odds (30 days)0.1%top 96.7% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

Vulnerability related to an unquoted search path in CivetWeb v1.16. This vulnerability allows a local attacker to execute arbitrary code with elevated privileges by placing a malicious executable in a directory that is scanned before the intended application path (C:\Program Files\CivetWeb\CivetWeb.exe --), due to the absence of quotes in the service configuration.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Ubuntu:22.04:LTS	civetweb	no fix listed	UBUNTU-CVE-2026-5789
Ubuntu:24.04:LTS	civetweb	no fix listed	UBUNTU-CVE-2026-5789
Ubuntu:25.10	civetweb	no fix listed	UBUNTU-CVE-2026-5789
Ubuntu:26.04:LTS	civetweb	no fix listed	UBUNTU-CVE-2026-5789

Affected products (as reported)

Vendor	Product	Versions
CivetWeb	CivetWeb	1.16

Weakness: CWE-428 · Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

References

https://www.incibe.es/en/incibe-cert/notices/aviso/search-path-without-quotes-civetweb patch