CVE-2025-34157

Critical · CVSS 9.0

Coolify — Stored Cross-Site Scripting (XSS) in project creation workflow

CVSS: 9.0; nvd
EPSS: —
KEV: No
Class: oss containerizable; CWE-20, CWE-79, CWE-79

Description

Coolify versions prior to v4.0.0-beta.420.6 are vulnerable to a stored cross-site scripting (XSS) attack in the project creation workflow. An authenticated user with low privileges can create a project with a maliciously crafted name containing embedded JavaScript. When an administrator attempts to delete the project or its associated resource, the payload executes in the admin’s browser context. This results in full compromise of the Coolify instance, including theft of API tokens, session cookies, and access to WebSocket-based terminal sessions on managed servers.

Search profile — drives PoC discovery

Symbols project creationproject namedelete projectWebSocket terminal sessionAPI token theftsession cookie theftadmin browser context

Keywords CVE-2025-34157Coolify stored XSSCoolify project name XSSCoolify beta.420Coolify admin XSSCoolify low privilege XSSCoolify WebSocket XSScoollabsio coolify XSS

Versions: < v4.0.0-beta.420.6

Ranked PoCs (3) — best first

Heuristic ranking — not yet expert-vetted. Scored on structure + provenance, not execution.

Eyodav/CVE-2025-34157 candidate

cited in references · recent activity

gh_search

★ 0
Eyodav/Eyodav needs review

trickest

★ 0
fkie-cad/nvd-json-data-feeds needs review

trickest

★ 0

Recall-favoring discovery; ranking by the Stage-4 scorer (Adam's rubric). Scanner/aggregator repos are hidden.

References

Status: enriched · ingested 2026-07-15T00:00:20.000Z · profiled 2026-07-15T00:30:20.000Z