CVE-2025-67124: A TOCTOU and symlink race in svenstaro/miniserve 0.32.0 upload finalization (when uploads are enabled) can all

Routine

MEDIUM 6.8DOWNGRADE

CVE-2025-67124 is a medium-severity flaw (CVSS 6.8) affecting miniserve. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A TOCTOU and symlink race in svenstaro/miniserve 0.32.0 upload finalization (when uploads are enabled) can allow an attacker to overwrite arbitrary files outside the intended upload/document root in deployments where the attacker can create/replace filesystem entries in the upload destination directory (e.g., shared writable directory/volume).

Why this priority

Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	6.8 (Medium)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.3% (top 75%)
CISA exploited list	No
Weakness	CWE-59, CWE-367
Published	2026-01-23
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: svenstaro

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

Am I affected?

Timeline

2026-01-23 16:15 UTCPublished CVE record published
2026-06-17 09:57 UTCUpdated Record last modified

svenstaro miniserve DOWNGRADE

Affected: 0.32.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.32.0

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 0.32.0 (Debian / Ubuntu)

apt-cache madison miniserve sudo apt install miniserve=<VERSION_BEFORE_0.32.0> sudo apt-mark hold miniserve

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list miniserve sudo dnf downgrade miniserve-<VERSION_BEFORE_0.32.0> sudo dnf versionlock add miniserve

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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-2025-67124?

miniserve: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2025-67124 being exploited?

CVE-2025-67124 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-2025-67124 affect?

CVE-2025-67124 affects miniserve. Severity is medium (CVSS 6.8). A TOCTOU and symlink race in svenstaro/miniserve 0.32.0 upload finalization (when uploads are enabled) can allow an attacker to overwrite arbitrary files outside the intended upload/document root in deployments where the attacker can create

How urgent is CVE-2025-67124?

Priority 35/100. Public exploit reference

References

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