CVE-2017-20179Network attack vector

Authenticated remote code execution via parameterized rendering

Published Feb 21, 2023 · Updated Aug 5, 2024

Code injection in InSTEDD Pollit 2.3.1 allows remote authenticated users to execute arbitrary Ruby code through a crafted tour page. TourController passes the page request parameter directly to Rails render, allowing a nested inline-render option to be compiled as executable ERB instead of selecting a template name. Low-privilege authenticated access is required, and injected Ruby executes within the web application server process.

CVSS severity9.8
Critical
EPSS probability0.74%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Code injection in InSTEDD Pollit 2.3.1 allows remote authenticated users to execute arbitrary Ruby code through a crafted tour page. TourController passes the page request parameter directly to Rails render, allowing a nested inline-render option to be compiled as executable ERB instead of selecting a template name. Low-privilege authenticated access is required, and injected Ruby executes within the web application server process.

The record

CVE
CVE-2017-20179
Published
Feb 21, 2023
Updated
Aug 5, 2024
Vendor
InSTEDD
Product
Pollit
Classifications
T1059
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 21, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 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=2.3.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

InSTEDD · Pollitversion=2.3.1

Published CVSS scores

6.3VulDBCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
6.3VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
6.5VulDBAV:N/AC:L/Au:S/C:P/I:P/A:P
9.8NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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

T1059Command and Scripting Interpreter

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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