CVE-2021-21319

What it is

Galette is a membership management web application geared towards non profit organizations. In versions prior to 0.9.5, malicious javascript code can be stored to be displayed later on self subscription page. The self subscription feature can be disabled as a workaround (this is the default state). Malicious javascript code can be executed (not stored) on login and retrieve password pages. This issue is patched in version 0.9.5.

At a glance

Exploitability

Can be exploited over the network with a low-privilege account, but needs a user to act. High risk of data exposure.

Exploit odds

0.9% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2021-10-25 16:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-17 03:35 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 0.9% in the next 30 days (EPSS).
• Severity: 6.8 MEDIUM (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2021-10-25 16:15 UTC

Last modified

2026-06-17 03:35 UTC

Exploit probability

0.9% · EPSS, next 30 days

Weakness

CWE-79 · Cross-site scripting

Record status

Modified

Affected

• Galette < 0.9.5

Attack profile CVSS 3.1 · 6.8

Attack vector

Network

Complexity

Low

Privileges needed

Low

User interaction

Required

Scope

Changed

Confidentiality

High

Integrity

None

Availability

None

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2021-21319.md and follow it. Check whether this project is affected by CVE-2021-21319. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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