CVE-2026-33645

Published: Mar 26, 2026 Last Modified: Mar 27, 2026

ExploitDB:

Other exploit source:

Google Dorks:

HIGH 7,1

Source: [email protected]

Attack Vector: network

Attack Complexity: low

Privileges Required: low

User Interaction: none

Scope: unchanged

Confidentiality: none

Integrity: high

Availability: low

Description

AI Translation Available

Fireshare facilitates self-hosted media and link sharing. In version 1.5.1, an authenticated path traversal vulnerability in Fireshare’s chunked upload endpoint allows an attacker to write arbitrary files outside the intended upload directory. The `checkSum` multipart field is used directly in filesystem path construction without sanitization or containment checks. This enables unauthorized file writes to attacker-chosen paths writable by the Fireshare process (e.g., container `/tmp`), violating integrity and potentially enabling follow-on attacks depending on deployment. Version 1.5.2 fixes the issue.

EPSS (Exploit Prediction Scoring System)

Trend Analysis

EPSS (Exploit Prediction Scoring System)

Prevede la probabilità di sfruttamento basata su intelligence sulle minacce e sulle caratteristiche della vulnerabilità.

EPSS Score

0,0005

Percentile

0,2th

Updated

Single Data Point

Only one EPSS measurement is available for this CVE. Trend analysis requires multiple data points over time.

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Stable

Abstraction: Base Structure: Simple

Common Consequences

Security Scopes Affected:

Integrity Confidentiality Availability

Potential Impacts:

Execute Unauthorized Code Or Commands Modify Files Or Directories Read Files Or Directories Dos: Crash, Exit, Or Restart

Applicable Platforms

Technologies: AI/ML

Likelihood of Exploit: High

View CWE Details

External Control of File Name or Path

Draft

Abstraction: Base Structure: Simple

Common Consequences

Security Scopes Affected:

Integrity Confidentiality Availability

Potential Impacts:

Read Files Or Directories Modify Files Or Directories Execute Unauthorized Code Or Commands Dos: Crash, Exit, Or Restart Dos: Resource Consumption (Other)