CVE-2026-102121: A form-rendering interface in the Advanced Forms component is reachable without authentication so that publish

Q: How do I fix CVE-2026-102121?

kiteworks: upgrade to 9.5.1. Exact commands for each OS are on this page.

Q: Is CVE-2026-102121 being exploited?

CVE-2026-102121 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-2026-102121 affect?

CVE-2026-102121 affects kiteworks. Severity is high (CVSS 8.6). A form-rendering interface in the Advanced Forms component is reachable without authentication so that published forms can be displayed to anonymous visitors, but it returned more data than the form itself required. Anyone who knew the web

Q: How urgent is CVE-2026-102121?

Priority 45/100. High severity; Remotely exploitable, no login, no user action

This month

HIGH 8.6REMOTEUPGRADE

CVE-2026-102121 is a high-severity flaw (CVSS 8.6) affecting kiteworks. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A form-rendering interface in the Advanced Forms component is reachable without authentication so that published forms can be displayed to anonymous visitors, but it returned more data than the form itself required. Anyone who knew the web address of a published form could potentially retrieve the form owner's Kiteworks account profile, including personal details, along with parts of the deployment's configuration settings; no passwords, authenti

Why this priority

High severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	8.6 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.5% (top 61%)
CISA exploited list	No
Weakness	CWE-200, CWE-306
Published	2026-09-30
Last modified	2026-10-08

Publisher (CNA): Cybersecurity and Infrastructure Security Agency (CISA) U.S. Civilian Government · Vendor: accellion

Last updated 2026-10-08 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-09-30 21:17 UTCPublished CVE record published
2026-10-08 13:43 UTCUpdated Record last modified

accellion kiteworks UPGRADE

Affected: < 9.5.1

Fixed in: 9.5.1

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 9.5.1 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade kiteworks

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-2026-102121?

kiteworks: upgrade to 9.5.1. Exact commands for each OS are on this page.

Is CVE-2026-102121 being exploited?

CVE-2026-102121 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-2026-102121 affect?

CVE-2026-102121 affects kiteworks. Severity is high (CVSS 8.6). A form-rendering interface in the Advanced Forms component is reachable without authentication so that published forms can be displayed to anonymous visitors, but it returned more data than the form itself required. Anyone who knew the web

How urgent is CVE-2026-102121?

Priority 45/100. High severity; Remotely exploitable, no login, no user action

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References

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