CVE-2017-0903

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.8 under NVD CVSS v3. EPSS exploit probability: 15.9%, top 3% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
Elevated
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 16%CVSS: 9.8Exploit: Elevated riskExposed: 0

A fix is available — apply it.

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.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
65(Track*)
EG Risk 65/100SSVC: Track*

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity98% × 45%
Exploitation40% × 40%
Automatability30% × 15%
Action: Watch closely — could escalate to Attend.
EPSS PROB
16%
EPSS %ILE
97%
KEV
Not listed

Published

October 11, 2017

Last Modified

June 17, 2026

Advisory Details (10)

Auto-updated Sep 1, 2026
Patch available. Sources: redhat, github_commit.
generic Patch Available

[SECURITY] [DLA 1421-1] ruby2.1 security update

https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html
generic

HackerOne

https://hackerone.com/reports/274990
github_commit Patch Available

commit 510b1638ac9b (rubygems/rubygems)

Patch available: rubygems/rubygems v4.0.4 (contains commit 510b1638ac9b)

https://github.com/rubygems/rubygems/commit/510b1638ac9bba3ceb7a5d73135dafff9e5bab49
redhat Patch Available
https://access.redhat.com/errata/RHSA-2018:0585
redhat Patch Available
https://access.redhat.com/errata/RHSA-2018:0583
redhat Patch Available

Affected: Red Hat Enterprise Linux 7.

https://access.redhat.com/errata/RHSA-2018:0378
redhat Patch Available
https://access.redhat.com/errata/RHSA-2017:3485
generic

CVE-2017-0903 - PSIRT.COM

http://www.securityfocus.com/bid/101275
generic

Unsafe Object Deserialization Vulnerability in RubyGems - RubyGems Blog

http://blog.rubygems.org/2017/10/09/unsafe-object-deserialization-vulnerability.html
generic

2.6.14 Released - RubyGems Blog

http://blog.rubygems.org/2017/10/09/2.6.14-released.html

Patch Availability(7)

Vendor / EcosystemFixed in / PatchReleasedSource
ubunturuby2.0 (2.0.0.484-1ubuntu2.13+esm1) @ trusty2026-05-20ubuntu
ubunturuby2.3-tcltk (2.3.1-2~16.04.6) @ xenial2026-05-20ubuntu
ubunturuby2.3 (2.3.3-1ubuntu1.6) @ artful2026-05-20ubuntu
redhatrh-ruby22-ruby-0:2.2.9-19.el72018-03-26redhat
redhatrh-ruby23-ruby-0:2.3.6-67.el72018-03-26redhat
redhatruby-0:2.0.0.648-33.el7_42018-02-28redhat
redhatrh-ruby24-ruby-0:2.4.2-86.el72017-12-19redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(7 across 7 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
rubygems—3.2.0~rc.1-1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
rubygems—3.2.0~rc.1-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
rubygems—3.2.0~rc.1-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
rubygems—3.2.0~rc.1-1—
Debian:8(1)
PackageVulnerable rangeFixed inDependents
ruby2.12.1.5-2, 2.1.5-2+deb8u1, 2.1.5-2+deb8u2, 2.1.5-2+deb8u32.1.5-2+deb8u4—
Debian:9(1)
PackageVulnerable rangeFixed inDependents
ruby2.32.3.3-1, 2.3.3-1+deb9u12.3.3-1+deb9u2—
RubyGems(1)
PackageVulnerable rangeFixed inDependents
rubygems-update2.0.0 ... 2.6.9 (65 versions)2.6.14—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

All Vendor Advisories

(7)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 3× in last 7d / 19× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 135 total refreshes for this CVE.

  1. 2026-09-04 13:56 UTCEPSS rescore
  2. 2026-09-02 14:07 UTCEPSS rescore
  3. 2026-09-01 13:48 UTCEPSS rescore
  4. 2026-09-01 03:31 UTCEPSS rescore
  5. 2026-08-28 21:35 UTCEPSS rescore
  6. 2026-08-27 14:20 UTCEPSS rescore
  7. 2026-08-27 01:30 UTCOSV refresh
  8. 2026-08-26 14:41 UTCEPSS rescore
  9. 2026-08-25 13:44 UTCEPSS rescore
  10. 2026-08-21 23:44 UTCEPSS rescore
  11. 2026-08-19 16:59 UTCEPSS rescore
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  16. 2026-08-12 13:46 UTCEPSS rescore
  17. 2026-08-11 13:36 UTCEPSS rescore
  18. 2026-08-10 15:08 UTCOSV refresh
  19. 2026-08-09 13:42 UTCEPSS rescore
  20. 2026-08-08 16:32 UTCEPSS rescore
  21. 2026-08-07 16:22 UTCEPSS rescore
  22. 2026-08-06 13:42 UTCEPSS rescore
  23. 2026-08-05 19:12 UTCEPSS rescore
  24. 2026-08-04 15:05 UTCEPSS rescore
  25. 2026-08-02 02:22 UTCEPSS rescore
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  1. 2026-08-01 04:11 UTCEPSS rescore
  2. 2026-07-30 16:24 UTCEPSS rescore
  3. 2026-07-28 15:31 UTCEPSS rescore
  4. 2026-07-26 14:50 UTCEPSS rescore
  5. 2026-07-25 16:00 UTCOSV refresh
  6. 2026-07-25 14:13 UTCEPSS rescore
  7. 2026-07-24 14:13 UTCEPSS rescore
  8. 2026-07-23 14:15 UTCEPSS rescore
  9. 2026-07-23 01:25 UTCEG score recompute
  10. 2026-07-22 22:04 UTCEG score recompute
  11. 2026-07-22 14:04 UTCEPSS rescore
  12. 2026-07-21 15:21 UTCEPSS rescore
  13. 2026-07-21 15:21 UTCEPSS rescore
  14. 2026-07-20 17:04 UTCEPSS rescore
  15. 2026-07-19 14:28 UTCEPSS rescore
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  17. 2026-07-19 02:26 UTCEPSS rescore
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  19. 2026-07-18 10:00 UTCEPSS rescore
  20. 2026-07-18 10:00 UTCEPSS rescore
  21. 2026-07-16 16:59 UTCEPSS rescore
  22. 2026-07-16 16:59 UTCEPSS rescore
  23. 2026-07-15 16:54 UTCEPSS rescore
  24. 2026-07-15 16:54 UTCEPSS rescore
  25. 2026-07-15 01:56 UTCEPSS rescore
  26. 2026-07-13 22:26 UTCEPSS rescore
  27. 2026-07-12 05:43 UTCEPSS rescore
  28. 2026-07-12 05:43 UTCEPSS rescore
  29. 2026-07-11 08:24 UTCEPSS rescore
  30. 2026-07-09 19:06 UTCEPSS rescore
  31. 2026-07-08 15:10 UTCEPSS rescore
  32. 2026-07-08 10:57 UTCOSV refresh
  33. 2026-07-07 13:42 UTCEPSS rescore
  34. 2026-07-06 16:24 UTCEPSS rescore
  35. 2026-07-06 16:24 UTCEPSS rescore
  36. 2026-07-05 02:27 UTCEPSS rescore
  37. 2026-07-04 06:28 UTCEPSS rescore
  38. 2026-07-01 15:02 UTCEPSS rescore
  39. 2026-06-30 23:19 UTCEPSS rescore
  40. 2026-06-30 23:19 UTCEPSS rescore
  41. 2026-06-29 14:03 UTCEPSS rescore
  42. 2026-06-28 14:04 UTCEPSS rescore
  43. 2026-06-28 04:53 UTCEPSS rescore
  44. 2026-06-27 03:05 UTCEPSS rescore
  45. 2026-06-25 13:47 UTCEPSS rescore
  46. 2026-06-24 14:02 UTCEPSS rescore
  47. 2026-06-23 21:30 UTCEPSS rescore
  48. 2026-06-21 14:54 UTCEPSS rescore
  49. 2026-06-21 14:54 UTCEPSS rescore
  50. 2026-06-21 01:57 UTCEPSS rescore
  51. 2026-06-21 01:57 UTCEPSS rescore
  52. 2026-06-19 22:53 UTCOSV refresh
  53. 2026-06-19 19:23 UTCEPSS rescore
  54. 2026-06-19 19:23 UTCEPSS rescore
  55. 2026-06-18 17:50 UTCEPSS rescore
  56. 2026-06-18 17:50 UTCEPSS rescore
  57. 2026-06-17 17:50 UTCEPSS rescore
  58. 2026-06-17 17:50 UTCEPSS rescore
  59. 2026-06-16 17:50 UTCEPSS rescore
  60. 2026-06-15 17:45 UTCEPSS rescore
  61. 2026-06-13 22:57 UTCEPSS rescore
  62. 2026-06-13 22:57 UTCEPSS rescore
  63. 2026-06-12 23:09 UTCEPSS rescore
  64. 2026-06-11 13:57 UTCEPSS rescore
  65. 2026-06-08 14:14 UTCEPSS rescore
  66. 2026-06-07 15:22 UTCEPSS rescore
  67. 2026-06-07 15:22 UTCEPSS rescore
  68. 2026-06-06 13:45 UTCEPSS rescore
  69. 2026-06-06 13:45 UTCEPSS rescore
  70. 2026-06-05 22:44 UTCEPSS rescore
  71. 2026-06-05 06:08 UTCEPSS rescore
  72. 2026-06-05 06:08 UTCEPSS rescore
  73. 2026-06-04 13:10 UTCEPSS rescore
  74. 2026-06-04 13:10 UTCEPSS rescore
  75. 2026-06-02 20:10 UTCEPSS rescore

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2017-0903?
CVE-2017-0903 is a critical vulnerability published on October 11, 2017. 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.
When was CVE-2017-0903 disclosed?
CVE-2017-0903 was first published in the National Vulnerability Database on October 11, 2017, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2017-0903 actively exploited?
CVE-2017-0903 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 16% probability of exploitation in the next 30 days, which ranks it in the top 3.3% of all scored CVEs.
What is the CVSS score of CVE-2017-0903?
CVE-2017-0903 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2017-0903?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2017-0903, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2017-0903

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