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MEDIUM severity

CVE-2017-20159 — keynote

MEDIUMFix: rf-/keynote@05be435

CVE-2017-20159 is a medium-severity (CVSS 6.1) Cross-site Scripting (XSS) vulnerability in keynote. A fix is available for keynote — see the affected versions and patch details below.

keynote Cross-site Scripting vulnerability

Also known asGHSA-399p-vq28-5hg8
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Oct 29, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

No confirmed exploitation observed yet

  • CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.

Exploitation and automatability from CISA’s SSVC triage for CVE-2017-20159.

EPSS Exploitation Probability

via FIRST.org ↗
0.7%probability of exploitation in next 30 days
Lower Risk+0.03%
Lower risk than most CVEs54th percentile — riskier than 54% of all scored CVEsHighest risk
0.00%0.40%0.81%1.21%0.4%0.7%Apr 26Aug 26Oct 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

1 pkg affected
💎keynote

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects RubyGems packages — download data is not available via public APIs for these ecosystems.

Description

A vulnerability was found in rf Keynote up to 0.x on Rails. It has been rated as problematic. Affected by this issue is some unknown functionality of the file lib/keynote/rumble.rb. The manipulation of the argument value leads to cross site scripting. The attack may be launched remotely. Upgrading to version 1.0.0 is able to address this issue. The patch is identified as 05be4356b0a6ca7de48da926a9b997beb5ffeb4a. It is recommended to upgrade the affected component. VDB-217142 is the identifier assigned to this vulnerability.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
💎RubyGemskeynoteall versions1.0.0bundle update keynote --conservative

Affected Products

1 product · 1 configurations
Application
keynotekeynote_project
< 1.0.0
range

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for keynote, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update keynote to 1.0.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2017-20159 is resolved across your whole dependency graph.

  3. Workarounds

    Escape or sanitise the affected output on the server side rather than relying on client-side filtering, and add a Content-Security-Policy that blocks inline script execution so injected markup cannot run even if it reaches the page.

Frequently Asked Questions

A vulnerability was found in rf Keynote up to 0.x on Rails. It has been rated as problematic. Affected by this issue is some unknown functionality of the file lib/keynote/rumble.rb. The manipulation of the argument value leads to cross site scripting. The attack may be launched remotely. Upgrading to version 1.0.0 is able to address this issue. The patch is identified as 05be4356b0a6ca7de48da926a9b997beb5ffeb4a. It is recommended to upgrade the affected component. VDB-217142 is the identifier assigned to this vulnerability.
O3 Security · Impact-Aware SCA

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CVE-2017-20159: keynote XSS — Fixed in 1.0.0