CVE-2021-32750: MuWire is a file publishing and networking tool that protects the identity of its users by using I2P technolog

Q: How do I fix CVE-2021-32750?

muwire: upgrade to 0.8.8. Exact commands for each OS are on this page.

Q: Is CVE-2021-32750 being exploited?

CVE-2021-32750 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2021-32750 affect?

CVE-2021-32750 affects muwire. Severity is medium (CVSS 6.8). MuWire is a file publishing and networking tool that protects the identity of its users by using I2P technology. Users of MuWire desktop client prior to version 0.8.8 can be de-anonymized by an attacker who knows their full ID. An attacker

Q: How urgent is CVE-2021-32750?

Priority 43/100. Public exploit reference

This month

MEDIUM 6.8UPGRADE

CVE-2021-32750 is a medium-severity flaw (CVSS 6.8) affecting muwire. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

MuWire is a file publishing and networking tool that protects the identity of its users by using I2P technology. Users of MuWire desktop client prior to version 0.8.8 can be de-anonymized by an attacker who knows their full ID. An attacker could send a message with a subject line containing a URL with an HTML image tag and the MuWire client would try to fetch that image via clearnet, thus exposing the IP address of the user. The problem is fixed

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	6.8 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.8% (top 42%)
CISA exploited list	No
Weakness	CWE-200, CWE-79
Published	2021-07-15
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: muwire project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2021-07-15 17:15 UTCPublished CVE record published
2026-06-17 03:53 UTCUpdated Record last modified

muwire project muwire UPGRADE

Affected: < 0.8.8

Fixed in: 0.8.8

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy muwire || rpm -q muwire || muwire --version

2. UPGRADE to 0.8.8 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade muwire

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade muwire

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2021-32750?

muwire: upgrade to 0.8.8. Exact commands for each OS are on this page.

Is CVE-2021-32750 being exploited?

CVE-2021-32750 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2021-32750 affect?

CVE-2021-32750 affects muwire. Severity is medium (CVSS 6.8). MuWire is a file publishing and networking tool that protects the identity of its users by using I2P technology. Users of MuWire desktop client prior to version 0.8.8 can be de-anonymized by an attacker who knows their full ID. An attacker

How urgent is CVE-2021-32750?

Priority 43/100. Public exploit reference

References

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