8.8

CVE-2026-73293: semaphoreui semaphore Improper Privilege Management

CVSS: 8.8v3.1HighDeferred
AliasesGHSA-cxvf-gvfq-36w2GO-2026-6371
Published 12-08-2026Last modified 12-08-2026
Open JSON

Vulnerability summary

CVE-2026-73293 is a high (CVSS 8.8) Improper Privilege Management vulnerability in semaphoreui semaphore. EPSS estimates a 0.57% chance of exploitation in the next 30 days, higher than 45.9% of scored vulnerabilities.

Overall risk
35/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.8/10
010
High · v3.1 (CVE.org)
EPSS score
0.57%
0%100%
Low · +0.07 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 3 · Related 3
OPENSUSE-SU-2026:21897-1SUSE-SU-2026:23855-1SUSE-SU-2026:23863-1

Timeline

  1. 12-08-2026
    PublishedVulnerability first disclosed.
  2. 12-08-2026
    Last modifiedVulnerability information updated.

Description

Semaphore UI is a web interface for managing DevOps tools. Prior to 2.18.19 and from 2.19.0-alpha3 until 2.19.5-beta5, ProjectMiddleware and GetProjectOrGlobalRoleBySlug allow a project manager to use POST /api/project/{id}/roles to create a custom manager role with permission bitmask 15, overriding the built-in manager permissions and granting CanUpdateProject and CanManageProjectUsers owner capabilities. This issue is fixed in versions 2.18.19 and 2.19.5-beta5.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.57%

Chance of exploitation in the next 30 days

Percentile

46%

Versus all other CVEs

30-day change

+0.07 pp

From 0.50% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.57%

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

Github.com/semaphoreui1 product
  • semaphore< 0.0.0-20260705182501-bb2a4e1f08c8
Semaphoreui1 product
  • semaphore< 2.18.19 | ≥ 2.19.0-alpha3, < 2.19.5-beta5

2 vendors · 2 products

References

7 links