CVE-2023-46400: KWHotel 0.47 is vulnerable to CSV Formula Injection in the add guest function.

This month

CRITICAL 9.8REMOTEDOWNGRADE

CVE-2023-46400 is a critical-severity flaw (CVSS 9.8) affecting kwhotel. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

KWHotel 0.47 is vulnerable to CSV Formula Injection in the add guest function.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

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

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.4% (top 69%)
CISA exploited list	No
Weakness	CWE-1236
Published	2025-01-23
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: kwhotel

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

Am I affected?

Timeline

2025-01-23 22:15 UTCPublished CVE record published
2026-06-17 06:30 UTCUpdated Record last modified

kwhotel kwhotel DOWNGRADE

Affected: 0.47

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.47

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 0.47 (Debian / Ubuntu)

apt-cache madison kwhotel sudo apt install kwhotel=<VERSION_BEFORE_0.47> sudo apt-mark hold kwhotel

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

dnf --showduplicates list kwhotel sudo dnf downgrade kwhotel-<VERSION_BEFORE_0.47> sudo dnf versionlock add kwhotel

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-2023-46400?

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

Is CVE-2023-46400 being exploited?

CVE-2023-46400 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-2023-46400 affect?

CVE-2023-46400 affects kwhotel. Severity is critical (CVSS 9.8). KWHotel 0.47 is vulnerable to CSV Formula Injection in the add guest function.

How urgent is CVE-2023-46400?

Priority 47/100. Critical severity; Remotely exploitable, no login, no user action

Related CVEs

CVE-2023-46401 CRITICAL 9.8 DOWNGRADE KWHotel 0.47 is vulnerable to CSV Formula Injection in the invoice adding function.

References

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