Aria2 up to 1.37.0 src/bittorrent_helper.cc divide by zero

Summaryinfo

A vulnerability classified as problematic was found in Aria2 up to 1.37.0. Affected is an unknown function of the file src/bittorrent_helper.cc. The manipulation results in divide by zero. This vulnerability is known as CVE-2026-71832. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability was found in Aria2 up to 1.37.0. It has been classified as problematic. Affected is an unknown function of the file src/bittorrent_helper.cc. The manipulation with an unknown input leads to a divide by zero vulnerability. CWE is classifying the issue as CWE-369. The product divides a value by zero. This is going to have an impact on availability. CVE summarizes:

Aria2 version 1.37.0 and below is affected by a Divide By Zero issue in src/bittorrent_helper.cc, which allows a remote malicious user to cause a Denial of Service

The advisory is shared for download at github.com. This vulnerability is traded as CVE-2026-71832 since 08/07/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1499.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Name

• Aria2

Version

• 1.0
• 1.1
• 1.2
• 1.3
• 1.4
• 1.5
• 1.6
• 1.7
• 1.8
• 1.9
• 1.10
• 1.11
• 1.12
• 1.13
• 1.14
• 1.15
• 1.16
• 1.17
• 1.18
• 1.19
• 1.20
• 1.21
• 1.22
• 1.23
• 1.24
• 1.25
• 1.26
• 1.27
• 1.28
• 1.29
• 1.30
• 1.31
• 1.32
• 1.33
• 1.34
• 1.35
• 1.36
• 1.37.0

Website

• Product: https://github.com/aria2/aria2/

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