gtsteffaniak filebrowser up to 1.2.1-stable/1.3.0-beta /public/share/ cross site scripting

CVSS Meta Temp Score
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CTI Interest Score
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5.9$0-$5k0.00

Summaryinfo

A vulnerability was found in gtsteffaniak filebrowser up to 1.2.1-stable/1.3.0-beta and classified as problematic. Affected by this vulnerability is an unknown functionality of the file /public/share/. Such manipulation leads to cross site scripting. This vulnerability is documented as CVE-2026-30934. The attack can be executed remotely. There is not any exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in gtsteffaniak filebrowser up to 1.2.1-stable/1.3.0-beta. Affected by this issue is an unknown code of the file /public/share/. The manipulation with an unknown input leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. Impacted is integrity. CVE summarizes:

FileBrowser Quantum is a free, self-hosted, web-based file manager. Prior to 1.3.1-beta and 1.2.2-stable, Stored XSS is possible via share metadata fields (e.g., title, description) that are rendered into HTML for /public/share/<hash> without context-aware escaping. The server uses text/template instead of html/template, allowing injected scripts to execute when victims visit the share URL. This vulnerability is fixed in 1.3.1-beta and 1.2.2-stable.

The advisory is shared for download at github.com. This vulnerability is handled as CVE-2026-30934 since 03/07/2026. The exploitation is known to be easy. The attack may be launched remotely. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1059.007.

Upgrading to version 1.2.2-stable or 1.3.1-beta eliminates this vulnerability.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

Name

Version

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.9

VulDB Base Score: 3.5
VulDB Temp Score: 3.4
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 5.4
NVD Vector: 🔒

CNA Base Score: 8.9
CNA Vector (GitHub_M): 🔒

CVSSv2info

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

Exploitinginfo

Class: Cross site scripting
CWE: CWE-79 / CWE-94 / CWE-74
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: filebrowser 1.2.2-stable/1.3.1-beta

Timelineinfo

03/07/2026 CVE reserved
03/10/2026 +3 days Advisory disclosed
03/10/2026 +0 days VulDB entry created
03/19/2026 +9 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: github.com
Status: Confirmed

CVE: CVE-2026-30934 (🔒)
GCVE (CVE): GCVE-0-2026-30934
GCVE (VulDB): GCVE-100-349976

Entryinfo

Created: 03/10/2026 17:40
Updated: 03/19/2026 15:16
Changes: 03/10/2026 17:40 (64), 03/15/2026 21:11 (2), 03/19/2026 15:16 (11)
Complete: 🔍
Cache ID: 216::103

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