CVE-2026-102131: Kiteworks Email Protection Gateway rejected certain configuration settings, but its validation did not recogni

Q: How do I fix CVE-2026-102131?

kiteworks: upgrade to 9.5.0. Exact commands for each OS are on this page.

Q: Is CVE-2026-102131 being exploited?

CVE-2026-102131 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-2026-102131 affect?

CVE-2026-102131 affects kiteworks. Severity is high (CVSS 7.2). Kiteworks Email Protection Gateway rejected certain configuration settings, but its validation did not recognize every form in which they could be supplied. An authenticated administrator could potentially use an unrecognized form to have a

This month

HIGH 7.2UPGRADE

CVE-2026-102131 is a high-severity flaw (CVSS 7.2) affecting kiteworks. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Kiteworks Email Protection Gateway rejected certain configuration settings, but its validation did not recognize every form in which they could be supplied. An authenticated administrator could potentially use an unrecognized form to have a file of their choosing written to the gateway and executed, resulting in code execution as the gateway service account.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.2 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	None
EPSS exploit chance	1.2% (top 32%)
CISA exploited list	No
Weakness	CWE-94, CWE-178
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 13:44 UTCUpdated Record last modified

accellion kiteworks UPGRADE

Affected: < 9.5.0

Fixed in: 9.5.0

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 9.5.0 (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-2026-102131?

kiteworks: upgrade to 9.5.0. Exact commands for each OS are on this page.

Is CVE-2026-102131 being exploited?

CVE-2026-102131 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-2026-102131 affect?

CVE-2026-102131 affects kiteworks. Severity is high (CVSS 7.2). Kiteworks Email Protection Gateway rejected certain configuration settings, but its validation did not recognize every form in which they could be supplied. An authenticated administrator could potentially use an unrecognized form to have a

How urgent is CVE-2026-102131?

Priority 42/100. High severity

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References

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