CVE-2025-27142: LocalSend is a free, open-source app that allows users to securely share files and messages with nearby device

Q: How do I fix CVE-2025-27142?

localsend: upgrade to 1.17.0. Exact commands for each OS are on this page.

Q: Is CVE-2025-27142 being exploited?

CVE-2025-27142 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-2025-27142 affect?

CVE-2025-27142 affects localsend. Severity is high (CVSS 8.8). LocalSend is a free, open-source app that allows users to securely share files and messages with nearby devices over their local network without needing an internet connection. Prior to version 1.17.0, due to the missing sanitization of the

This month

HIGH 8.8UPGRADE

CVE-2025-27142 is a high-severity flaw (CVSS 8.8) affecting localsend. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

LocalSend is a free, open-source app that allows users to securely share files and messages with nearby devices over their local network without needing an internet connection. Prior to version 1.17.0, due to the missing sanitization of the path in the `POST /api/localsend/v2/prepare-upload` and the `POST /api/localsend/v2/upload` endpoint, a malicious file transfer request can write files to the arbitrary location on the system, resulting in the

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	8.8 (High)
Attack vector	Adjacent network
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.5% (top 54%)
CISA exploited list	No
Weakness	CWE-22
Published	2025-02-25
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: localsend

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

Am I affected?

Timeline

2025-02-25 20:15 UTCPublished CVE record published
2026-06-17 09:03 UTCUpdated Record last modified

localsend localsend UPGRADE

Affected: < 1.17.0

Fixed in: 1.17.0

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 1.17.0 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade localsend

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-2025-27142?

localsend: upgrade to 1.17.0. Exact commands for each OS are on this page.

Is CVE-2025-27142 being exploited?

CVE-2025-27142 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-2025-27142 affect?

CVE-2025-27142 affects localsend. Severity is high (CVSS 8.8). LocalSend is a free, open-source app that allows users to securely share files and messages with nearby devices over their local network without needing an internet connection. Prior to version 1.17.0, due to the missing sanitization of the

How urgent is CVE-2025-27142?

Priority 42/100. High severity

Related CVEs

CVE-2025-54792 MEDIUM 6.8 UPGRADE LocalSend is an open-source app to securely share files and messages with nearby devices over local networks w

References

← Back to latest CVEs