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CVE-2026-102147: A stored cross-site scripting (XSS) weakness in Kiteworks Core could allow an unauthenticated attacker to stor

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CRITICAL 9.3UPGRADE

CVE-2026-102147 is a critical-severity flaw (CVSS 9.3) affecting kiteworks. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A stored cross-site scripting (XSS) weakness in Kiteworks Core could allow an unauthenticated attacker to store crafted content that later executes arbitrary JavaScript in the authenticated session of an administrator who views the affected page. This could have permitted the attacker to gain full administrative control, including the creation of a new administrative account.

Why this priority

  • Critical severity

A fixed release or distro patch exists.

Risk facts

CVSS score9.3 (Critical)
Attack vectorNetwork (remote)
Attack complexityLow
Privileges neededNone
User interactionRequired
EPSS exploit chance0.5% (top 60%)
CISA exploited listNo
WeaknessCWE-79
Published2026-09-30
Last modified2026-10-07
Publisher (CNA): Cybersecurity and Infrastructure Security Agency (CISA) U.S. Civilian Government · Vendor: accellion

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Last updated 2026-10-07 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

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-2026-102147?

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

Is CVE-2026-102147 being exploited?

CVE-2026-102147 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-2026-102147 affect?

CVE-2026-102147 affects kiteworks. Severity is critical (CVSS 9.3). A stored cross-site scripting (XSS) weakness in Kiteworks Core could allow an unauthenticated attacker to store crafted content that later executes arbitrary JavaScript in the authenticated session of an administrator who views the affected

How urgent is CVE-2026-102147?

Priority 42/100. Critical severity

Related CVEs

References

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