RubyGems versions between 2.0.0 and 2.6.13 are vulnerable to a possible remote code execution vulnerability. YAML deserialization of gem…

Description

RubyGems versions between 2.0.0 and 2.6.13 are vulnerable to a possible remote code execution vulnerability. YAML deserialization of gem specifications can bypass class white lists. Specially crafted serialized objects can possibly be used to escalate to remote code execution.

Scores

EPSS (exploitation in 30 days)

15.9% · top 3.1% of all CVEs (4 Nov 2026)

The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.8.

Weakness

• CWE-502: Deserialization of Untrusted Data (CWE-502) (opens in a new tab)All about CWE-502 and its CVEs

Affected products

• HackerOne · RubyGems

  • affected Versions >= 2.0.0

Affected packages

From reviewed advisories of the GitHub Advisory Database.

• RubyGemsrubygems-updateGHSA-mqwr-4qf2-2hcv (opens in a new tab)

References (13)

• USN-3685-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
• USN-3553-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
• RHSA-2018:0585 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
• RHSA-2018:0378 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
• https://hackerone.com/reports/274990 (opens in a new tab)x_refsource_MISCx_transferred
• DSA-4031 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
• https://github.com/rubygems/rubygems/commit/510b1638ac9bba3ceb7a5d73135dafff9e5bab49 (opens in a new tab)x_refsource_MISCx_transferred
• RHSA-2017:3485 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
• http://blog.rubygems.org/2017/10/09/2.6.14-released.html (opens in a new tab)x_refsource_MISCx_transferred
• [debian-lts-announce] 20180714 [SECURITY] [DLA 1421-1] ruby2.1 security update (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
• RHSA-2018:0583 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
• 101275 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
• http://blog.rubygems.org/2017/10/09/unsafe-object-deserialization-vulnerability.html (opens in a new tab)x_refsource_MISCx_transferred

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisory GHSA-mqwr-4qf2-2hcv (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2017-0903](https://trackcve.app/badge/CVE-2017-0903.svg)](https://trackcve.app/cve/CVE-2017-0903)

Record last updated 17 Sept 2024, 03:54 UTC.