CVE-2021-43440: Multiple Stored XSS Vulnerabilities in the Source Code of iOrder 1.0 allow remote attackers to execute arbitra

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MEDIUM 6.1DOWNGRADE

CVE-2021-43440 is a medium-severity flaw (CVSS 6.1) affecting iorder. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Multiple Stored XSS Vulnerabilities in the Source Code of iOrder 1.0 allow remote attackers to execute arbitrary code via signup form in the Name and Phone number field.

Why this priority

No elevated risk signals yet

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	1.4% (top 27%)
CISA exploited list	No
Weakness	CWE-79
Published	2021-12-20
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: iorder project

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

Am I affected?

Timeline

2021-12-20 20:15 UTCPublished CVE record published
2026-06-17 04:10 UTCUpdated Record last modified

iorder project iorder DOWNGRADE

Affected: 1.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.0 (Debian / Ubuntu)

apt-cache madison iorder sudo apt install iorder=<VERSION_BEFORE_1.0> sudo apt-mark hold iorder

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

dnf --showduplicates list iorder sudo dnf downgrade iorder-<VERSION_BEFORE_1.0> sudo dnf versionlock add iorder

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-2021-43440?

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

Is CVE-2021-43440 being exploited?

CVE-2021-43440 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-2021-43440 affect?

CVE-2021-43440 affects iorder. Severity is medium (CVSS 6.1). Multiple Stored XSS Vulnerabilities in the Source Code of iOrder 1.0 allow remote attackers to execute arbitrary code via signup form in the Name and Phone number field.

How urgent is CVE-2021-43440?

Priority 40/100. No elevated risk signals yet.

Related CVEs

CVE-2021-43441 MEDIUM 5.3 DOWNGRADE An HTML Injection Vulnerability in iOrder 1.0 allows the remote attacker to execute Malicious HTML codes via t

References

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