CVE-2021-37448: Cross Site Scripting (XSS) exists in NCH IVM Attendant v5.12 and earlier via the Mailbox name (stored).

Q: How do I fix CVE-2021-37448?

ivm attendant: upgrade to newer than 5.12. Exact commands for each OS are on this page.

Q: Is CVE-2021-37448 being exploited?

CVE-2021-37448 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-2021-37448 affect?

CVE-2021-37448 affects ivm attendant. Severity is medium (CVSS 5.4). Cross Site Scripting (XSS) exists in NCH IVM Attendant v5.12 and earlier via the Mailbox name (stored).

Q: How urgent is CVE-2021-37448?

Priority 30/100. No elevated risk signals yet.

Routine

MEDIUM 5.4UPGRADE

CVE-2021-37448 is a medium-severity flaw (CVSS 5.4) affecting ivm attendant. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cross Site Scripting (XSS) exists in NCH IVM Attendant v5.12 and earlier via the Mailbox name (stored).

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	0.5% (top 55%)
CISA exploited list	No
Weakness	CWE-79
Published	2021-07-25
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: nchsoftware

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

Am I affected?

Timeline

2021-07-25 22:15 UTCPublished CVE record published
2026-06-17 04:00 UTCUpdated Record last modified

nchsoftware ivm attendant UPGRADE

Affected: <= 5.12

Fixed in: newer than 5.12

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy ivm-attendant || rpm -q ivm-attendant || ivm-attendant --version

2. UPGRADE to newer than 5.12 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade ivm-attendant

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade ivm-attendant

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-2021-37448?

ivm attendant: upgrade to newer than 5.12. Exact commands for each OS are on this page.

Is CVE-2021-37448 being exploited?

CVE-2021-37448 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-2021-37448 affect?

CVE-2021-37448 affects ivm attendant. Severity is medium (CVSS 5.4). Cross Site Scripting (XSS) exists in NCH IVM Attendant v5.12 and earlier via the Mailbox name (stored).

How urgent is CVE-2021-37448?

Priority 30/100. No elevated risk signals yet.

Related CVEs

CVE-2021-37451 MEDIUM 5.4 UPGRADE Cross Site Scripting (XSS) exists in NCH IVM Attendant v5.12 and earlier via /msglist?mbx= (reflected).
CVE-2021-37450 MEDIUM 5.4 UPGRADE Cross Site Scripting (XSS) exists in NCH IVM Attendant v5.12 and earlier via /ogmprop?id= (reflected).
CVE-2021-37449 MEDIUM 5.4 UPGRADE Cross Site Scripting (XSS) exists in NCH IVM Attendant v5.12 and earlier via /ogmlist?folder= (reflected).
CVE-2021-37444 HIGH 8.8 UPGRADE NCH IVM Attendant v5.12 and earlier suffers from a directory traversal weakness upon uploading plugins in a ZI
CVE-2021-37443 HIGH 8.1 UPGRADE NCH IVM Attendant v5.12 and earlier allows path traversal via the logdeleteselected check0 parameter for file

References

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