8.5

CVE-2026-5789: civetweb_project civetweb Unquoted Search Path or Element

CVSS: 8.5v4.0HighAnalyzed
AliasesUBUNTU-CVE-2026-5789
Published 21-04-2026Last modified 21-04-2026
Open JSON

Vulnerability summary

CVE-2026-5789 is a high (CVSS 8.5) Unquoted Search Path or Element vulnerability in civetweb_project civetweb. EPSS estimates a 0.19% chance of exploitation in the next 30 days, higher than 8.3% of scored vulnerabilities.

Overall risk
34/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.5/10
010
High · v4.0 (CVE.org)
EPSS score
0.19%
0%100%
Low · +0.05 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 21-04-2026
    PublishedVulnerability first disclosed.
  2. 21-04-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

5 scores · 3 sources · 2 versions

EPSS trend

Probability

0.19%

Chance of exploitation in the next 30 days

Percentile

8%

Versus all other CVEs

30-day change

+0.05 pp

From 0.14% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.19%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Civetweb1 product
Civetweb_project1 product
Ubuntu1 product
  • civetwebAll versions (No fix recorded)

3 vendors · 3 products

References

3 links