CVE-2026-45727: CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') in CloakHQ CloakBrowser
CVE-2026-45727 is a path traversal vulnerability in CloakHQ's CloakBrowser versions prior to 0.3.28. The cloakserve CDP multiplexer improperly uses a user-supplied fingerprint parameter as a filesystem path component without validation. This allows an unauthenticated attacker who can access the cloakserve port to craft a fingerprint value that traverses directories outside the intended data directory. As a result, when Chrome fails to start or the process is cleaned up, arbitrary directories outside the intended scope can be deleted. The service is exposed by default on all network interfaces (0.0.0.0), increasing exposure risk.
AI Analysis
Technical Summary
CVE-2026-45727 is a high-severity path traversal vulnerability (CWE-22) affecting CloakHQ's CloakBrowser before version 0.3.28. The cloakserve CDP multiplexer uses the user-supplied fingerprint query parameter directly as a filesystem path component when creating Chrome profile directories. An attacker with network access to the cloakserve port can supply a crafted fingerprint containing path traversal sequences to escape the configured data directory. This leads to deletion of arbitrary directories via shutil.rmtree() during Chrome startup failure or cleanup. The default binding of cloakserve to 0.0.0.0 exposes the service to network attackers. The issue is patched in version 0.3.28.
Potential Impact
An unauthenticated remote attacker can delete arbitrary directories on the host filesystem by exploiting the path traversal vulnerability in cloakserve. This can lead to denial of service or data loss by removing critical files or directories. The network exposure of the service by default increases the risk of exploitation. No known exploits are reported in the wild at this time.
Mitigation Recommendations
This vulnerability is fixed in CloakBrowser version 0.3.28. Users should upgrade to version 0.3.28 or later to remediate the issue. Until upgrading, restricting network access to the cloakserve port can reduce exposure. Patch status is not explicitly stated beyond the fixed version; users should verify with the vendor advisory for any additional guidance.
CVE-2026-45727: CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') in CloakHQ CloakBrowser
Description
CVE-2026-45727 is a path traversal vulnerability in CloakHQ's CloakBrowser versions prior to 0.3.28. The cloakserve CDP multiplexer improperly uses a user-supplied fingerprint parameter as a filesystem path component without validation. This allows an unauthenticated attacker who can access the cloakserve port to craft a fingerprint value that traverses directories outside the intended data directory. As a result, when Chrome fails to start or the process is cleaned up, arbitrary directories outside the intended scope can be deleted. The service is exposed by default on all network interfaces (0.0.0.0), increasing exposure risk.
CVSS v4.0
Score 8.8high
Affected software
pkg:github/cloakhq/CloakBrowserRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-45727 is a high-severity path traversal vulnerability (CWE-22) affecting CloakHQ's CloakBrowser before version 0.3.28. The cloakserve CDP multiplexer uses the user-supplied fingerprint query parameter directly as a filesystem path component when creating Chrome profile directories. An attacker with network access to the cloakserve port can supply a crafted fingerprint containing path traversal sequences to escape the configured data directory. This leads to deletion of arbitrary directories via shutil.rmtree() during Chrome startup failure or cleanup. The default binding of cloakserve to 0.0.0.0 exposes the service to network attackers. The issue is patched in version 0.3.28.
Potential Impact
An unauthenticated remote attacker can delete arbitrary directories on the host filesystem by exploiting the path traversal vulnerability in cloakserve. This can lead to denial of service or data loss by removing critical files or directories. The network exposure of the service by default increases the risk of exploitation. No known exploits are reported in the wild at this time.
Mitigation Recommendations
This vulnerability is fixed in CloakBrowser version 0.3.28. Users should upgrade to version 0.3.28 or later to remediate the issue. Until upgrading, restricting network access to the cloakserve port can reduce exposure. Patch status is not explicitly stated beyond the fixed version; users should verify with the vendor advisory for any additional guidance.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-05-13T05:51:48.667Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a1de30be29bf47b503a5712
Added to database: 06/01/2026, 19:52:43 UTC
Last enriched: 06/08/2026, 21:00:07 UTC
Last updated: 07/31/2026, 19:22:59 UTC
Views: 117
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