CVE-2024-28063: Kiteworks Totemomail through 7.0.0 allows /responsiveUI/EnvelopeOpenServlet envelopeRecipient reflected XSS.

Q: How do I fix CVE-2024-28063?

totemomail: upgrade to newer than 7.0.0. Exact commands for each OS are on this page.

Q: Is CVE-2024-28063 being exploited?

CVE-2024-28063 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-2024-28063 affect?

CVE-2024-28063 affects totemomail. Severity is medium (CVSS 6.1). Kiteworks Totemomail through 7.0.0 allows /responsiveUI/EnvelopeOpenServlet envelopeRecipient reflected XSS.

Q: How urgent is CVE-2024-28063?

Priority 26/100. No elevated risk signals yet.

Routine

MEDIUM 6.1UPGRADE

CVE-2024-28063 is a medium-severity flaw (CVSS 6.1) affecting totemomail. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Kiteworks Totemomail through 7.0.0 allows /responsiveUI/EnvelopeOpenServlet envelopeRecipient reflected XSS.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.3% (top 81%)
CISA exploited list	No
Weakness	CWE-79
Published	2024-05-18
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: totemo

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

Am I affected?

Timeline

2024-05-18 22:15 UTCPublished CVE record published
2026-06-17 07:20 UTCUpdated Record last modified

totemo totemomail UPGRADE

Affected: <= 7.0.0

Fixed in: newer than 7.0.0

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 7.0.0 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade totemomail

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-2024-28063?

totemomail: upgrade to newer than 7.0.0. Exact commands for each OS are on this page.

Is CVE-2024-28063 being exploited?

CVE-2024-28063 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-2024-28063 affect?

CVE-2024-28063 affects totemomail. Severity is medium (CVSS 6.1). Kiteworks Totemomail through 7.0.0 allows /responsiveUI/EnvelopeOpenServlet envelopeRecipient reflected XSS.

How urgent is CVE-2024-28063?

Priority 26/100. No elevated risk signals yet.

References

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