CVE-2022-46255

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2022-12-14. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 9.8Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

An improper limitation of a pathname to a restricted directory vulnerability was identified in GitHub Enterprise Server that enabled remote code execution. A check was added within Pages to ensure the working directory is clean before unpacking new content to prevent an arbitrary file overwrite bug. This vulnerability affected only version 3.7.0 of GitHub Enterprise Server and was fixed in version 3.7.1. This vulnerability was reported via the GitHub Bug Bounty program.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
45(Track)
EG Risk 45/100SSVC: 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%
Exploitation1% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
71%
KEV
Not listed

Published

December 14, 2022

Last Modified

April 22, 2025

Advisory Details (1)

Auto-updated Jul 28, 2026
No patch confirmed yet.
generic

Release notes - GitHub Enterprise Server 3.7 Docs

https://docs.github.com/en/enterprise-server%403.7/admin/release-notes#3.7.1

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 39× 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.

  1. 2026-07-30 16:25 UTCEPSS rescore
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  3. 2026-07-30 01:28 UTCEPSS rescore
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  7. 2026-07-25 14:15 UTCEPSS rescore
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  9. 2026-07-23 14:16 UTCEPSS rescore
  10. 2026-07-23 02:15 UTCEG score recompute
  11. 2026-07-22 23:03 UTCEG score recompute
  12. 2026-07-22 14:06 UTCEPSS rescore
  13. 2026-07-21 15:23 UTCEPSS rescore
  14. 2026-07-21 15:23 UTCEPSS rescore
  15. 2026-07-20 17:05 UTCEPSS rescore
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  21. 2026-07-15 16:56 UTCEPSS rescore
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  1. 2026-07-12 05:44 UTCEPSS rescore
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  4. 2026-07-09 19:08 UTCEPSS rescore
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  6. 2026-07-07 13:44 UTCEPSS rescore
  7. 2026-07-06 16:25 UTCEPSS rescore
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  20. 2026-06-27 03:07 UTCEPSS rescore
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  22. 2026-06-25 13:48 UTCEPSS rescore
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  24. 2026-06-24 14:03 UTCEPSS rescore
  25. 2026-06-23 21:31 UTCEPSS rescore
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  27. 2026-06-22 14:24 UTCEPSS rescore
  28. 2026-06-21 14:55 UTCEPSS rescore
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  30. 2026-06-21 01:58 UTCEPSS rescore
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  39. 2026-06-15 17:46 UTCEPSS rescore
  40. 2026-06-14 23:16 UTCEPSS rescore
  41. 2026-06-13 22:59 UTCEPSS rescore
  42. 2026-06-12 23:10 UTCEPSS rescore
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  44. 2026-06-11 13:58 UTCEPSS rescore
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  46. 2026-06-10 22:17 UTCEPSS rescore
  47. 2026-06-10 13:21 UTCEPSS rescore
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  49. 2026-06-08 14:15 UTCEPSS rescore
  50. 2026-06-07 15:23 UTCEPSS rescore
  51. 2026-06-07 15:23 UTCEPSS rescore
  52. 2026-06-05 22:46 UTCEPSS rescore
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  54. 2026-06-05 06:09 UTCEPSS rescore
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  56. 2026-06-04 13:11 UTCEPSS rescore
  57. 2026-06-02 20:12 UTCEPSS rescore
  58. 2026-06-02 20:11 UTCEPSS rescore
  59. 2026-05-31 22:29 UTCEPSS rescore
  60. 2026-05-31 22:29 UTCEPSS rescore
  61. 2026-05-31 00:15 UTCEPSS rescore
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  63. 2026-05-29 13:43 UTCEPSS rescore
  64. 2026-05-28 13:43 UTCEPSS rescore
  65. 2026-05-28 13:43 UTCEPSS rescore
  66. 2026-05-27 13:39 UTCEPSS rescore
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  68. 2026-05-26 13:43 UTCEPSS rescore
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  71. 2026-05-26 07:17 UTCEPSS rescore
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  73. 2026-05-26 07:17 UTCEPSS rescore
  74. 2026-05-25 10:35 UTCEG score recompute
  75. 2026-05-25 10:35 UTCGHSA enrichment

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Frequently asked(5)

What is CVE-2022-46255?
CVE-2022-46255 is a critical vulnerability published on December 14, 2022. An improper limitation of a pathname to a restricted directory vulnerability was identified in GitHub Enterprise Server that enabled remote code execution. A check was added within Pages to ensure the working directory is clean before unpacking new content to prevent an arbitrary file overwrite…
When was CVE-2022-46255 disclosed?
CVE-2022-46255 was first published in the National Vulnerability Database on December 14, 2022, with the most recent update on April 22, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2022-46255 actively exploited?
CVE-2022-46255 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 29.3% of all scored CVEs.
What is the CVSS score of CVE-2022-46255?
CVE-2022-46255 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2022-46255?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2022-46255, 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.

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