GHSA-mf33-gv72-w2h5

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Source
https://github.com/advisories/GHSA-mf33-gv72-w2h5
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/05/GHSA-mf33-gv72-w2h5/GHSA-mf33-gv72-w2h5.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-mf33-gv72-w2h5
Aliases
  • CVE-2026-45727
Published
2026-05-18T17:50:21Z
Modified
2026-05-18T18:02:39.912468Z
Severity
  • 8.8 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N CVSS Calculator
Summary
CloakBrowser: Unauthenticated path traversal via fingerprint parameter in cloakserve leads to arbitrary directory deletion
Details

The cloakserve CDP multiplexer uses the user-supplied fingerprint query parameter directly as a filesystem path component when creating Chrome profile directories. An unauthenticated attacker who can reach the cloakserve port can supply a crafted fingerprint value containing path traversal sequences to resolve user_data_dir outside the configured data_dir. When Chrome fails to start or the process is cleaned up, shutil.rmtree() deletes the traversed path, resulting in arbitrary directory deletion.

Additionally, cloakserve bound to 0.0.0.0 by default, making it network-exposed.

Impact

An attacker with network access to the cloakserve port can delete arbitrary directories accessible to the service user.

Patches

Fixed in v0.3.28.

Mitigations

  • Upgrade to v0.3.28 or later
  • Restrict network access to the cloakserve port
Database specific 
{
    "github_reviewed_at": "2026-05-18T17:50:21Z",
    "nvd_published_at": null,
    "cwe_ids": [
        "CWE-22"
    ],
    "severity": "HIGH",
    "github_reviewed": true
}
References

Affected packages

PyPI / cloakbrowser

Package

Name
cloakbrowser
View open source insights on deps.dev
Purl
pkg:pypi/cloakbrowser

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0.3.28

Affected versions

0.*
0.1.0
0.1.1
0.1.2
0.1.3
0.1.4
0.1.5
0.1.6
0.1.7
0.1.8
0.1.9
0.1.10
0.1.11
0.1.12
0.2.0
0.2.1
0.2.2
0.3.0
0.3.1
0.3.2
0.3.4
0.3.5
0.3.6
0.3.7
0.3.8
0.3.9
0.3.10
0.3.11
0.3.12
0.3.13
0.3.14
0.3.15
0.3.16
0.3.17
0.3.18
0.3.19
0.3.20
0.3.21
0.3.22
0.3.23
0.3.24
0.3.25
0.3.26
0.3.27

Database specific

last_known_affected_version_range 
"<= 0.3.27"
source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/05/GHSA-mf33-gv72-w2h5/GHSA-mf33-gv72-w2h5.json"