CVE-2026-126936
Received Received - Intake

Race Condition in Zipline Allows Quota Bypass

Publication date: 2026-11-13

Last updated on: 2026-11-13

Assigner: VulnCheck

Description
Zipline before 4.7.0 contains a race condition vulnerability that allows users to bypass invitation usage limits, upload storage quotas, and shortened-URL quotas through concurrent requests. Attackers can send overlapping registration, upload, or URL creation requests that pass checks against stale state, creating extra accounts and exceeding administrator-configured resource quotas.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published
2026-11-13
Last Modified
2026-11-13
Generated
2026-11-13
AI Q&A
2026-11-13
EPSS Evaluated
N/A
NVD
CVE-2026-126936
EUVD
EUVD-2026-125129

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
zipline zipline to 4.7.0 (exc)

Helpful Resources

Exploitability

CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-367 The product checks the state of a resource before using that resource, but the resource's state can change between the check and the use in a way that invalidates the results of the check.

Attack-Flow Graph

AI Quick Actions

Instant insights powered by AI
Executive Summary

Zipline before version 4.7.0 has a race condition flaw. This allows attackers to bypass limits like invitation usage, upload storage, and shortened-URL quotas by sending overlapping requests. The system checks stale state, enabling creation of extra accounts and exceeding configured quotas.

Impact Analysis

Attackers could exploit this to create unauthorized accounts, consume excessive storage, or generate excessive shortened URLs. This may lead to service disruption, resource exhaustion, or unauthorized resource usage on systems running vulnerable Zipline versions.

Mitigation Strategies

Upgrade Zipline to version 4.7.0 or later to address the race condition vulnerability. Implement rate limiting and request queuing to prevent concurrent requests from bypassing checks. Review and enforce strict resource quotas for user accounts.

Chat Assistant

Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-126936. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70

EPSS Chart

Security Radar

News mentioning this vulnerability
Loading related security news...