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CVE-2018-9856: Kotti before 1.3.2 and 2.x before 2.0.0b2 has CSRF in the local roles implementation, as demonstrated by trigg

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HIGH 8.8UPGRADE

CVE-2018-9856 is a high-severity flaw (CVSS 8.8) affecting kotti. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Kotti before 1.3.2 and 2.x before 2.0.0b2 has CSRF in the local roles implementation, as demonstrated by triggering a permission change via a /admin-document/@@share request.

Why this priority

  • High severity
  • Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score8.8 (High)
Attack vectorNetwork (remote)
Attack complexityLow
Privileges neededNone
User interactionRequired
EPSS exploit chance0.6% (top 50%)
CISA exploited listNo
WeaknessCWE-352
Published2018-04-09
Last modified2026-06-17
Publisher (CNA): MITRE · Vendor: kotti project

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

Am I affected?

Timeline

kotti project kotti UPGRADE
Affected: < 1.3.2 · 2.0.0 alpha1 · 2.0.0b1
Fixed in: 1.3.2
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy kotti || rpm -q kotti || kotti --version
2. UPGRADE to 1.3.2 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade kotti
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade kotti
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-2018-9856?

kotti: upgrade to 1.3.2. Exact commands for each OS are on this page.

Is CVE-2018-9856 being exploited?

CVE-2018-9856 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-2018-9856 affect?

CVE-2018-9856 affects kotti. Severity is high (CVSS 8.8). Kotti before 1.3.2 and 2.x before 2.0.0b2 has CSRF in the local roles implementation, as demonstrated by triggering a permission change via a /admin-document/@@share request.

How urgent is CVE-2018-9856?

Priority 48/100. High severity; Public exploit reference

References

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