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HIGH

CVE-2020-8162

CVSS v3

7.5

HIGH

EPSS Score

3.0 %

exploit probability, as of 2026-10-18

CISA KEV

No

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • activestorageRubyGemsfrom 6.0.0 · fixed in 6.0.3.1

Vendor advisories

  • CVE-2020-8162 Red Hat Product Security1,445 products fixed · 2 known affected

    rubygem-activestorage: circumvention of file size limits in ActiveStorage

    cfme-gemset as a component of CloudForms Management Engine 5 · cfme-gemset.src as a component of CloudForms Management Engine 5

  • RHSA-2021:1313 Red Hat Product Security1,445 products fixed

    Red Hat Security Advisory: Satellite 6.9 Release

Full record on NVD

Description

A client side enforcement of server side security vulnerability exists in rails < 5.2.4.2 and rails < 6.0.3.1 ActiveStorage's S3 adapter that allows the Content-Length of a direct file upload to be modified by an end user bypassing upload limits.

Technical details

Published
2020-06-19

Frequently asked questions

What is CVE-2020-8162?

A client side enforcement of server side security vulnerability exists in rails < 5.2.4.2 and rails < 6.0.3.1 ActiveStorage's S3 adapter that allows the Content-Length of a direct file upload to be modified by an end user bypassing upload limits.

Is CVE-2020-8162 actively exploited?

Active exploitation of CVE-2020-8162 has not been confirmed. Its EPSS score was 3.0% on 2026-10-18, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2020-8162?

CVE-2020-8162 has a CVSS v3 base score of 7.5 (HIGH severity).

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