CVE-2026-28674: xiaoheiFS is a self-hosted financial and operational system for cloud service businesses

Q: How do I fix CVE-2026-28674?

xiaoheifs: upgrade to 0.4.0. Exact commands for each OS are on this page.

Q: Is CVE-2026-28674 being exploited?

CVE-2026-28674 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-2026-28674 affect?

CVE-2026-28674 affects xiaoheifs. Severity is high (CVSS 7.2). xiaoheiFS is a self-hosted financial and operational system for cloud service businesses. In versions up to and including 0.3.15, the `AdminPaymentPluginUpload` endpoint lets admins upload any file to `plugins/payment/`. It only checks a ha

Q: How urgent is CVE-2026-28674?

Priority 37/100. High severity; Public exploit reference

Routine

HIGH 7.2UPGRADE

CVE-2026-28674 is a high-severity flaw (CVSS 7.2) affecting xiaoheifs. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

xiaoheiFS is a self-hosted financial and operational system for cloud service businesses. In versions up to and including 0.3.15, the `AdminPaymentPluginUpload` endpoint lets admins upload any file to `plugins/payment/`. It only checks a hardcoded password (`qweasd123456`) and ignores file content. A background watcher (`StartWatcher`) then scans this folder every 5 seconds. If it finds a new executable, it runs it immediately, resulting in RCE.

Why this priority

High severity
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	7.2 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	None
EPSS exploit chance	0.4% (top 71%)
CISA exploited list	No
Weakness	CWE-434, CWE-798
Published	2026-03-18
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: danvei233

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

Am I affected?

Timeline

2026-03-18 01:16 UTCPublished CVE record published
2026-06-17 10:28 UTCUpdated Record last modified

danvei233 xiaoheifs UPGRADE

Affected: < 0.4.0

Fixed in: 0.4.0

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 0.4.0 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade xiaoheifs

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-2026-28674?

xiaoheifs: upgrade to 0.4.0. Exact commands for each OS are on this page.

Is CVE-2026-28674 being exploited?

CVE-2026-28674 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-2026-28674 affect?

CVE-2026-28674 affects xiaoheifs. Severity is high (CVSS 7.2). xiaoheiFS is a self-hosted financial and operational system for cloud service businesses. In versions up to and including 0.3.15, the `AdminPaymentPluginUpload` endpoint lets admins upload any file to `plugins/payment/`. It only checks a ha

How urgent is CVE-2026-28674?

Priority 37/100. High severity; Public exploit reference

Related CVEs

CVE-2026-28673 HIGH 7.2 UPGRADE xiaoheiFS is a self-hosted financial and operational system for cloud service businesses

References

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