PT-2026-3828 · Geogebra · Geogebra Classic

Brian Rodriguez · Published 2026-01-21 · Updated 2026-01-21 · CVE-2021-47876

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions GeoGebra Classic version 5.0.631.0-d

Description GeoGebra Classic version 5.0.631.0-d contains a denial of service issue in the input field. An attacker can cause the application to crash by providing an oversized buffer of approximately 800,000 repeated characters. This buffer is submitted to the 'Entrada:' input field, leading to an application crash.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

DoS

Allocation of Resources Without Limits

Weakness Enumeration

CWE-770

Related Identifiers

CVE-2021-47876

Affected Products

Geogebra Classic

References · 5

• 🔥 https://exploit-db.com/exploits/49654 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2021-47876 · Security Note
• https://t.me/CVEtracker/42667 · Telegram Post
• https://vulncheck.com/advisories/geogebra-classic-d-denial-of-service · Note
• https://geogebra.org · Note