CVE-2021-30146

MEDIUM

Seafile 7.0.5 - Stored Cross-Site Scripting via Library Share Functionality

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2021-30146. PoCs published by Security-AVS.

AI-analyzed exploit summary The repository describes a Persistent XSS vulnerability in Seafile 7.0.5, where an attacker with a local account can share a malicious library, executing JavaScript via notification messages in victim accounts. The README provides a technical overview but lacks exploit code or detailed analysis.

Description

Seafile 7.0.5 (2019) allows Persistent XSS via the "share of library functionality."

Exploits (1)

nomisec WRITEUP 2 stars
by Security-AVS · poc
https://github.com/Security-AVS/CVE-2021-30146

The repository describes a Persistent XSS vulnerability in Seafile 7.0.5, where an attacker with a local account can share a malicious library, executing JavaScript via notification messages in victim accounts. The README provides a technical overview but lacks exploit code or detailed analysis.

Classification
Writeup 80%
Attack Type
Xss
Complexity
Trivial
Reliability
Reliable
Target: Seafile 7.0.5
Auth required
Prerequisites: Local account on the Seafile instance
MITRE ATT&CK
devstral-2 · analyzed Feb 18, 2026 Full analysis →

References (1)

Core 1
Core References
Third Party Advisory x_refsource_misc
https://github.com/Security-AVS/CVE-2021-30146

Scores

CVSS v3 5.4
EPSS 0.0085
EPSS Percentile 53.5%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Details

CWE
CWE-79
Status published
Products (1)
seafile/seafile 7.0.5
Published Apr 06, 2021
Tracked Since Feb 18, 2026