CVE-2026-40028: Hayabusa versions prior to 3.8.0 contain a cross-site scripting (XSS) vulnerability in its HTML report output

Q: How do I fix CVE-2026-40028?

hayabusa: upgrade to 3.8.0. Exact commands for each OS are on this page.

Q: Is CVE-2026-40028 being exploited?

CVE-2026-40028 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-2026-40028 affect?

CVE-2026-40028 affects hayabusa. Severity is medium (CVSS 5.4). Hayabusa versions prior to 3.8.0 contain a cross-site scripting (XSS) vulnerability in its HTML report output that allows an attacker to execute arbitrary JavaScript when a user scans JSON-exported logs containing malicious content in the C

Q: How urgent is CVE-2026-40028?

Priority 21/100. No elevated risk signals yet.

Routine

MEDIUM 5.4UPGRADE

CVE-2026-40028 is a medium-severity flaw (CVSS 5.4) affecting hayabusa. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Hayabusa versions prior to 3.8.0 contain a cross-site scripting (XSS) vulnerability in its HTML report output that allows an attacker to execute arbitrary JavaScript when a user scans JSON-exported logs containing malicious content in the Computer field. An attacker can inject JavaScript into the Computer field of JSON logs that executes in the forensic examiner's browser session when viewing the generated HTML report, leading to information disc

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	5.4 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.2% (top 90%)
CISA exploited list	No
Weakness	CWE-79
Published	2026-04-08
Last modified	2026-07-24

Publisher (CNA): VulnCheck · Vendor: yamato-security

Last updated 2026-07-24 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-04-08 22:16 UTCPublished CVE record published
2026-07-24 21:10 UTCUpdated Record last modified

yamato-security hayabusa UPGRADE

Affected: < 3.8.0

Fixed in: 3.8.0

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 3.8.0 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade hayabusa

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-2026-40028?

hayabusa: upgrade to 3.8.0. Exact commands for each OS are on this page.

Is CVE-2026-40028 being exploited?

CVE-2026-40028 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-2026-40028 affect?

CVE-2026-40028 affects hayabusa. Severity is medium (CVSS 5.4). Hayabusa versions prior to 3.8.0 contain a cross-site scripting (XSS) vulnerability in its HTML report output that allows an attacker to execute arbitrary JavaScript when a user scans JSON-exported logs containing malicious content in the C

How urgent is CVE-2026-40028?

Priority 21/100. No elevated risk signals yet.

References

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