CVE-2021-43106: A Header Injection vulnerability exists in Compass Plus TranzWare Online FIMI Web Interface Tranzware Online (

Routine

MEDIUM 6.1DOWNGRADEDOWNGRADE

CVE-2021-43106 is a medium-severity flaw (CVSS 6.1) affecting tranzware online, tranzware online financial institution maintenance interface. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A Header Injection vulnerability exists in Compass Plus TranzWare Online FIMI Web Interface Tranzware Online (TWO) 5.3.33.3 F38 and FIMI 4.2.19.4 25.The HTTP host header can be manipulated and cause the application to behave in unexpected ways. Any changes made to the header would just cause the request to be sent to a completely different Domain/IP address. This is due to that the server implicitly trusts the Host header, and fails to validate o

Why this priority

Public exploit reference

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

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.7% (top 47%)
CISA exploited list	No
Weakness	CWE-116
Published	2022-02-14
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: compassplus

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

Am I affected?

Timeline

2022-02-14 20:15 UTCPublished CVE record published
2026-06-17 04:10 UTCUpdated Record last modified

compassplus tranzware online DOWNGRADE

Affected: 5.3.33.3_f38

Fixed in: no fixed release known

Safe to downgrade to: a release before 5.3.33.3_f38

1. Check installed version

apt-cache policy tranzware-online || rpm -q tranzware-online || tranzware-online --version

2. No fixed release: DOWNGRADE to a release before 5.3.33.3_f38 (Debian / Ubuntu)

apt-cache madison tranzware-online sudo apt install tranzware-online=<VERSION_BEFORE_5.3.33.3_f38> sudo apt-mark hold tranzware-online

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

dnf --showduplicates list tranzware-online sudo dnf downgrade tranzware-online-<VERSION_BEFORE_5.3.33.3_f38> sudo dnf versionlock add tranzware-online

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.

compassplus tranzware online financial institution maintenance interface DOWNGRADE

Affected: 4.2.19.4.25

Fixed in: no fixed release known

Safe to downgrade to: a release before 4.2.19.4.25

1. Check installed version

apt-cache policy tranzware-online-financial-institution-maintenance-interface || rpm -q tranzware-online-financial-institution-maintenance-interface || tranzware-online-financial-institution-maintenance-interface --version

2. No fixed release: DOWNGRADE to a release before 4.2.19.4.25 (Debian / Ubuntu)

apt-cache madison tranzware-online-financial-institution-maintenance-interface sudo apt install tranzware-online-financial-institution-maintenance-interface=<VERSION_BEFORE_4.2.19.4.25> sudo apt-mark hold tranzware-online-financial-institution-maintenance-interface

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

dnf --showduplicates list tranzware-online-financial-institution-maintenance-interface sudo dnf downgrade tranzware-online-financial-institution-maintenance-interface-<VERSION_BEFORE_4.2.19.4.25> sudo dnf versionlock add tranzware-online-financial-institution-maintenance-interface

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-2021-43106?

tranzware online: downgrade or apply the listed mitigation; tranzware online financial institution maintenance interface: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2021-43106 being exploited?

CVE-2021-43106 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-2021-43106 affect?

CVE-2021-43106 affects tranzware online, tranzware online financial institution maintenance interface. Severity is medium (CVSS 6.1). A Header Injection vulnerability exists in Compass Plus TranzWare Online FIMI Web Interface Tranzware Online (TWO) 5.3.33.3 F38 and FIMI 4.2.19.4 25.The HTTP host header can be manipulated and cause the application to behave in unexpected w

How urgent is CVE-2021-43106?

Priority 39/100. Public exploit reference

References

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