CVE-2026-71832

Aria2 version 1.37.0 and below is affected by a Divide By Zero issue in src/bittorrent_helper.cc,...

6.2 Medium

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

Attack profile

How easy it is to exploit

Attack vector: Local
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: None
Integrity: None
Availability: High

Exploit likelihood

0.16%Unchanged since Aug 25, 2026

What each source reports

CVE List Score used 6.2

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

Record: CVE-2026-71832
CVSS 3.1: 6.2 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-369
Updated: 2026-11-02

EUVDEUVD-2026-65117 6.2

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

Record: EUVD-2026-65117
CVSS 3.1: 6.2 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

GitHub AdvisoriesGHSA-f585-rhpf-c5rw 6.2

Aria2 version 1.37.0 and below is affected by a Divide By Zero issue in src/bittorrent_helper.cc,...

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

Record: GHSA-f585-rhpf-c5rw
CVSS 3.1: 6.2 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-369
Updated: 2026-11-02

NVD 6.2

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

Record: CVE-2026-71832
CVSS 3.1: 6.2 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-369
Updated: 2026-11-02

OSV 6.2

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

Record: CVE-2026-71832
CVSS 3.1: 6.2 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVDEBIAN-CVE-2026-71832 6.2

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

Record: DEBIAN-CVE-2026-71832
CVSS 3.1: 6.2 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVUBUNTU-CVE-2026-71832 6.2

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

Record: UBUNTU-CVE-2026-71832
CVSS 3.1: 6.2 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

Affected packages

Affected packages
Package	Affected	Fixed
`aria2` Debian:12	All versions, plus listed versions 1.36.0-11.36.0-2	None known
`aria2` Debian:13	All versions, plus listed versions 0.10.1-10.10.2+1-10.11.0-10.11.2-10.11.3-1 Show 45 moreShow less 0.12.0-10.12.1-10.13.1+1-10.14.0-10.14.0-1+lenny10.14.0-1+lenny20.7.3-10.8.0-10.8.1-10.9.0-11.0.1-11.1.2-11.10.0-11.10.0-21.10.6-11.10.9-11.11.1-11.11.2-11.12.0-11.12.1-11.12.1-21.13.0-11.14.0-11.14.1-11.14.2-11.14.2-21.15.0-11.15.0-21.15.1-11.15.2-11.16.0-11.16.1-11.17.0-11.18.0-11.18.0-21.18.1-11.18.10-11.18.10-21.18.3-11.18.5-11.18.7-11.18.8-11.19.0-11.2.0-11.21.0-1	None known
`aria2` Debian:14	All versions, plus listed versions 0.10.1-10.10.2+1-10.11.0-10.11.2-10.11.3-1 Show 45 moreShow less 0.12.0-10.12.1-10.13.1+1-10.14.0-10.14.0-1+lenny10.14.0-1+lenny20.7.3-10.8.0-10.8.1-10.9.0-11.0.1-11.1.2-11.10.0-11.10.0-21.10.6-11.10.9-11.11.1-11.11.2-11.12.0-11.12.1-11.12.1-21.13.0-11.14.0-11.14.1-11.14.2-11.14.2-21.15.0-11.15.0-21.15.1-11.15.2-11.16.0-11.16.1-11.17.0-11.18.0-11.18.0-21.18.1-11.18.10-11.18.10-21.18.3-11.18.5-11.18.7-11.18.8-11.19.0-11.2.0-11.21.0-1	None known
`aria2` Ubuntu:Pro:14.04:LTS	All versions, plus listed versions 1.17.0-11.18.0-11.18.0-1ubuntu21.18.0-21.18.1-11.18.1-1ubuntu0.1~esm1	None known
`aria2` Ubuntu:Pro:16.04:LTS	All versions, plus listed versions 1.19.0-11.19.0-1build11.19.0-1ubuntu0.1~esm1	None known
`aria2` Ubuntu:Pro:18.04:LTS	All versions, plus listed versions 1.32.0-11.32.0-21.33.1-11.33.1-1ubuntu0.1~esm1	None known
`aria2` Ubuntu:20.04:LTS	All versions, plus listed versions 1.34.0-41.35.0-11.35.0-1build1	None known
`aria2` Ubuntu:22.04:LTS	All versions, plus listed versions 1.35.0-31.36.0-1	None known
`aria2` Ubuntu:24.04:LTS	All versions, plus listed versions 1.36.0-21.37.0+debian-11.37.0+debian-1build11.37.0+debian-1build21.37.0+debian-1build3	None known
`aria2` Ubuntu:26.10	All versions, plus listed versions 1.37.0+debian-4	None known
`aria2` Ubuntu:26.04:LTS	All versions, plus listed versions 1.37.0+debian-3build11.37.0+debian-4	None known

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-71832 is a medium vulnerability (CVSS 6.2) in aria2, published August 24, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.16%, the 4th percentile. No source names a fixed version.

References

This page doesn't list everything

Left out here: 70 versions. The JSON record has them.