CVE-2026-9753

HIGHPre-NVD 8.18.1—
EchelonGraph scoreMEDIUM confidence

Score 8.1 from GitHub Security Advisory (severity: HIGH) published 2026-06-10. a secondary CVSS source baseline 8.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
8.1EG
EchelonGraph verdictPlan mitigationSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 8.1Exploit: None knownExposed services: Not assessed

A fix is referenced (a reference tagged "Patch", often a source commit), but no release containing it is confirmed — find the release that contains it; until it is applied, mitigate (WAF / firewall / segmentation).

The $_internalApplyOplogUpdate aggregation pipeline stage can be used to execute a document diff containing a malformed binary diff to return memory out-of-bounds or crash the server. $_internalApplyOplogUpdate can be executed by any authenticated user with access to the aggregate command.

CVSS v3
8.1
EG Score
8.1HIGHmedium confidence
EG Risk
41
EG Risk 41/100

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
Severity81% × 45%
Exploitation0% × 40%
Automatability30% × 15%
EPSS PROB
0.5%
EPSS %ILE
42nd
KEV
Not listed

Published

June 9, 2026

Last Modified

July 23, 2026

Advisory Details (1)

Auto-updated Jun 9, 2026
Fix referenced — no release confirmed yet.
generic

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https://jira.mongodb.org/browse/SERVER-124959

Vendor Advisories for CVE-2026-9753(1)

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

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 31× 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 268 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-9753?
CVE-2026-9753 is a high vulnerability published on June 9, 2026. The $internalApplyOplogUpdate aggregation pipeline stage can be used to execute a document diff containing a malformed binary diff to return memory out-of-bounds or crash the server. $internalApplyOplogUpdate can be executed by any authenticated user with access to the aggregate command.
When was CVE-2026-9753 disclosed?
CVE-2026-9753 was first published on June 9, 2026, with the most recent update on July 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-9753 actively exploited?
CVE-2026-9753 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (42nd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-9753?
CVE-2026-9753 has a CVSS base score of 8.1 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-9753?
A fix for CVE-2026-9753 is referenced (a reference tagged "Patch", often a source commit), but EchelonGraph has no release containing it on record. Check that reference and the vendor's advisory for a release that contains the fix and update to it; until then, restrict network exposure of the affected system or apply the vendor's mitigation. The vendor advisories EchelonGraph has for CVE-2026-9753 are linked in the Vendor Advisories panel on this page.

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