Dromara free-fs up to 2.3.1 Preview /api/file/stream/preview FileStreamController.preview fileId missing authentication

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.6$0-$5k0.00+

Summaryinfo

A vulnerability categorized as problematic has been discovered in Dromara free-fs up to 2.3.1. Affected by this vulnerability is the function FileStreamController.preview of the file /api/file/stream/preview of the component Preview. Such manipulation of the argument fileId leads to missing authentication. This vulnerability is listed as CVE-2026-129162. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability was found in Dromara free-fs up to 2.3.1. It has been rated as problematic. Affected by this issue is the function FileStreamController.preview of the file /api/file/stream/preview of the component Preview. The manipulation of the argument fileId with an unknown input leads to a missing authentication vulnerability. Using CWE to declare the problem leads to CWE-306. The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources. Impacted is confidentiality. CVE summarizes:

Dromara free-fs 2.0.1 through 2.3.1 contains a missing authentication vulnerability in FileStreamController.preview that allows unauthenticated attackers to download stored files. Attackers who obtain a file ID from share listings or preview links can request /api/file/stream/preview/{fileId} to download any user's or workspace's files.

The advisory is shared for download at vul.yulun.ac.cn. This vulnerability is handled as CVE-2026-129162 since 11/13/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 11/13/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 5.6
VulDB Meta Temp Score: 5.6

VulDB Base Score: 5.3
VulDB Temp Score: 5.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 5.9
CNA Vector (VulnCheck): 🔒

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Missing authentication
CWE: CWE-306 / CWE-287
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

11/13/2026 Advisory disclosed
11/13/2026 +0 days CVE reserved
11/13/2026 +0 days VulDB entry created
11/13/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: vul.yulun.ac.cn
Status: Not defined

CNA: VulnCheck
CVE: CVE-2026-129162 (🔒)

GCVE (CVE): GCVE-0-2026-129162
GCVE (VulDB): GCVE-100-437228

Entryinfo

Created: 11/13/2026 18:49
Changes: 11/13/2026 18:49 (76)
Complete: 🔍
Cache ID: 216::103

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