CVE-2025-27145: copyparty, a portable file server, has a DOM-based cross-site scripting vulnerability in versions prior to 1.1

Q: How do I fix CVE-2025-27145?

copyparty: upgrade to 1.16.15. Exact commands for each OS are on this page.

Q: Is CVE-2025-27145 being exploited?

CVE-2025-27145 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-2025-27145 affect?

CVE-2025-27145 affects copyparty. Severity is low (CVSS 3.6). copyparty, a portable file server, has a DOM-based cross-site scripting vulnerability in versions prior to 1.16.15. The vulnerability is considered low-risk. By handing someone a maliciously-named file, and then tricking them into dragging

Q: How urgent is CVE-2025-27145?

Priority 28/100. Public exploit reference

Routine

LOW 3.6UPGRADE

CVE-2025-27145 is a low-severity flaw (CVSS 3.6) affecting copyparty. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

copyparty, a portable file server, has a DOM-based cross-site scripting vulnerability in versions prior to 1.16.15. The vulnerability is considered low-risk. By handing someone a maliciously-named file, and then tricking them into dragging the file into copyparty's Web-UI, an attacker could execute arbitrary javascript with the same privileges as that user. For example, this could give unintended read-access to files owned by that user. The bug i

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	3.6 (Low)
Attack vector	Local
Attack complexity	High
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.5% (top 59%)
CISA exploited list	No
Weakness	CWE-79, CWE-83
Published	2025-02-25
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: 9001

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

9001 copyparty UPGRADE

Affected: < 1.16.15

Fixed in: 1.16.15

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 1.16.15 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade copyparty

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-2025-27145?

copyparty: upgrade to 1.16.15. Exact commands for each OS are on this page.

Is CVE-2025-27145 being exploited?

CVE-2025-27145 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-2025-27145 affect?

CVE-2025-27145 affects copyparty. Severity is low (CVSS 3.6). copyparty, a portable file server, has a DOM-based cross-site scripting vulnerability in versions prior to 1.16.15. The vulnerability is considered low-risk. By handing someone a maliciously-named file, and then tricking them into dragging

How urgent is CVE-2025-27145?

Priority 28/100. Public exploit reference

Related CVEs

CVE-2026-30974 MEDIUM 4.6 UPGRADE Copyparty is a portable file server
CVE-2026-27948 MEDIUM 5.4 UPGRADE Copyparty is a portable file server
CVE-2025-58753 HIGH 7.5 UPGRADE Copyparty is a portable file server
CVE-2025-54796 HIGH 7.5 UPGRADE Copyparty is a portable file server
CVE-2025-54589 MEDIUM 6.3 UPGRADE Copyparty is a portable file server

References

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