CVE-2026-15007

MEDIUMPre-NVD 5.75.7—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 5.7 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.6%, top 51% 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, secondary
Trending — 3 sources updated this week
5.7EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 5.7Exploit: None knownExposed: 0

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

A denial of service vulnerability was identified in GitHub Enterprise Server that allowed an authenticated user to cause service disruption by supplying a repository release notes configuration file containing deeply nested YAML. When release notes were generated, the configuration file was parsed without a nesting depth limit, causing excessive resource consumption that could render the instance unresponsive. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.22 and was fixed in versions 3.17.18, 3.18.12, 3.19.9, 3.20.5, and 3.21.3. This vulnerability was reported via the GitHub Bug Bounty program.

CVSS v3
5.7
EG Score
5.7(medium)
EG Risk
26(Track)
EG Risk 26/100SSVC: 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
Severity57% × 45%
Exploitation1% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
49%
KEV
Not listed

Published

July 17, 2026

Last Modified

July 17, 2026

Advisory Details (5)

Auto-updated Jul 17, 2026
No patch confirmed yet.
generic

Release notes - GitHub Enterprise Server 3.21 Docs

https://docs.github.com/en/[email protected]/admin/release-notes#3.21.3
generic

Release notes - GitHub Enterprise Server 3.20 Docs

https://docs.github.com/en/[email protected]/admin/release-notes#3.20.5
generic

Release notes - GitHub Enterprise Server 3.19 Docs

https://docs.github.com/en/[email protected]/admin/release-notes#3.19.9
generic

Release notes - GitHub Enterprise Server 3.18 Docs

https://docs.github.com/en/[email protected]/admin/release-notes#3.18.12
generic

Release notes - GitHub Enterprise Server 3.17 Docs

https://docs.github.com/en/[email protected]/admin/release-notes#3.17.18

Vendor Advisories for CVE-2026-15007(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 9× in last 7d / 53× 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 142 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-15007?
CVE-2026-15007 is a medium vulnerability published on July 17, 2026. A denial of service vulnerability was identified in GitHub Enterprise Server that allowed an authenticated user to cause service disruption by supplying a repository release notes configuration file containing deeply nested YAML. When release notes were generated, the configuration file was parsed…
When was CVE-2026-15007 disclosed?
CVE-2026-15007 was first published in the National Vulnerability Database on July 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-15007 actively exploited?
CVE-2026-15007 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 51.0% of all scored CVEs.
What is the CVSS score of CVE-2026-15007?
CVE-2026-15007 has a CVSS v3 base score of 5.7 (NVD).
How do I remediate CVE-2026-15007?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-15007, 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

Explore the affected products and dependency analysis for CVE-2026-15007

Explore →

Is Your Infrastructure Affected by CVE-2026-15007?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs