CVE-2017-20159Network attack vector

Stored XSS via unescaped attribute quotes

Published Dec 31, 2022 · Updated Oct 15, 2024

Cross-site scripting in rf Keynote 0.x allows remote authenticated users to execute script in rendered HTML via crafted attribute values. The lib/keynote/rumble.rb attrs_to_s method interpolates HTML-safe attribute strings without escaping embedded quotation marks, allowing attacker-controlled markup to break out of an attribute context. Exploitation requires access to an application rendering attacker-influenced attributes; impact is script execution in a victim's browser without direct server compromise.

CVSS severity3.5
Low
EPSS probability0.68%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in rf Keynote 0.x allows remote authenticated users to execute script in rendered HTML via crafted attribute values. The lib/keynote/rumble.rb attrs_to_s method interpolates HTML-safe attribute strings without escaping embedded quotation marks, allowing attacker-controlled markup to break out of an attribute context. Exploitation requires access to an application rendering attacker-influenced attributes; impact is script execution in a victim's browser without direct server compromise.

The record

CVE
CVE-2017-20159
Published
Dec 31, 2022
Updated
Oct 15, 2024
Vendor
Apple
Product
Keynote
Classifications
CWE-79, T1189
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 31, 2022CVE publishedPublication date reported by the CVE source.
  2. Oct 15, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0.x

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Apple · Keynoteversion=0.x

Published CVSS scores

6.1NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
3.5VulDBCVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N
4.0VulDBAV:N/AC:L/Au:S/C:N/I:P/A:N
3.5VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1189Drive-by Compromise

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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