CVE-2023-25306: MultiMC Launcher <= 0.6.16 is vulnerable to Directory Traversal.

Q: How do I fix CVE-2023-25306?

multimc: upgrade to 0.7.0. Exact commands for each OS are on this page.

Q: Is CVE-2023-25306 being exploited?

CVE-2023-25306 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-2023-25306 affect?

CVE-2023-25306 affects multimc. Severity is high (CVSS 7.5). MultiMC Launcher <= 0.6.16 is vulnerable to Directory Traversal.

Q: How urgent is CVE-2023-25306?

Priority 52/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

This week

HIGH 7.5REMOTEUPGRADE

CVE-2023-25306 is a high-severity flaw (CVSS 7.5) affecting multimc. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

MultiMC Launcher <= 0.6.16 is vulnerable to Directory Traversal.

Why this priority

High severity
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.1% (top 35%)
CISA exploited list	No
Weakness	CWE-22
Published	2023-06-26
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: multimc

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

Am I affected?

Timeline

2023-06-26 15:15 UTCPublished CVE record published
2026-06-17 05:41 UTCUpdated Record last modified

multimc multimc UPGRADE

Affected: < 0.7.0

Fixed in: 0.7.0

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 0.7.0 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade multimc

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-2023-25306?

multimc: upgrade to 0.7.0. Exact commands for each OS are on this page.

Is CVE-2023-25306 being exploited?

CVE-2023-25306 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-2023-25306 affect?

CVE-2023-25306 affects multimc. Severity is high (CVSS 7.5). MultiMC Launcher <= 0.6.16 is vulnerable to Directory Traversal.

How urgent is CVE-2023-25306?

Priority 52/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

References

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