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
Trending — 3 sources updated this week
8.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.1Exploit: None knownExposed: 0

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

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
8.1(medium)
EG Risk
41(Track)
EG Risk 41/100SSVC: 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
Severity81% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
22%
KEV
Not listed

Published

June 9, 2026

Last Modified

July 23, 2026

Advisory Details (1)

Auto-updated Jun 9, 2026
No patch 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 19× in last 7d / 100× 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 222 total refreshes for this CVE.

  1. 2026-08-25 13:49 UTCEPSS rescore
  2. 2026-08-25 00:30 UTCEG score recompute
  3. 2026-08-25 00:30 UTCGHSA enrichment
  4. 2026-08-24 14:18 UTCEPSS rescore
  5. 2026-08-23 23:27 UTCGHSA enrichment
  6. 2026-08-23 10:58 UTCEG score recompute
  7. 2026-08-23 10:58 UTCGHSA enrichment
  8. 2026-08-23 00:19 UTCEPSS rescore
  9. 2026-08-21 23:49 UTCEPSS rescore
  10. 2026-08-21 22:45 UTCGHSA enrichment
  11. 2026-08-21 09:58 UTCEG score recompute
  12. 2026-08-21 09:58 UTCGHSA enrichment
  13. 2026-08-20 22:56 UTCEPSS rescore
  14. 2026-08-20 20:55 UTCGHSA enrichment
  15. 2026-08-20 08:54 UTCEG score recompute
  16. 2026-08-20 08:54 UTCGHSA enrichment
  17. 2026-08-19 17:04 UTCEPSS rescore
  18. 2026-08-19 15:39 UTCEG score recompute
  19. 2026-08-19 15:39 UTCGHSA enrichment
  20. 2026-08-18 13:49 UTCEPSS rescore
  21. 2026-08-17 13:47 UTCEPSS rescore
  22. 2026-08-17 12:31 UTCGHSA enrichment
  23. 2026-08-17 00:11 UTCEG score recompute
  24. 2026-08-17 00:11 UTCGHSA enrichment
  25. 2026-08-16 14:56 UTCEPSS rescore
Show 75 more
  1. 2026-08-16 12:09 UTCEG score recompute
  2. 2026-08-16 12:09 UTCGHSA enrichment
  3. 2026-08-16 02:15 UTCEPSS rescore
  4. 2026-08-16 00:10 UTCGHSA enrichment
  5. 2026-08-15 11:06 UTCEG score recompute
  6. 2026-08-15 11:06 UTCGHSA enrichment
  7. 2026-08-15 01:31 UTCEPSS rescore
  8. 2026-08-14 22:18 UTCGHSA enrichment
  9. 2026-08-14 10:18 UTCGHSA enrichment
  10. 2026-08-13 22:18 UTCEG score recompute
  11. 2026-08-13 22:18 UTCGHSA enrichment
  12. 2026-08-13 22:00 UTCEPSS rescore
  13. 2026-08-13 08:13 UTCGHSA enrichment
  14. 2026-08-12 20:12 UTCEG score recompute
  15. 2026-08-12 20:12 UTCGHSA enrichment
  16. 2026-08-12 13:51 UTCEPSS rescore
  17. 2026-08-12 08:12 UTCGHSA enrichment
  18. 2026-08-11 20:12 UTCEG score recompute
  19. 2026-08-11 20:12 UTCGHSA enrichment
  20. 2026-08-11 13:43 UTCEPSS rescore
  21. 2026-08-11 08:12 UTCEG score recompute
  22. 2026-08-11 08:12 UTCGHSA enrichment
  23. 2026-08-11 00:00 UTCEPSS rescore
  24. 2026-08-10 20:12 UTCGHSA enrichment
  25. 2026-08-10 08:09 UTCGHSA enrichment
  26. 2026-08-09 20:09 UTCEG score recompute
  27. 2026-08-09 20:09 UTCGHSA enrichment
  28. 2026-08-09 13:47 UTCEPSS rescore
  29. 2026-08-09 08:09 UTCGHSA enrichment
  30. 2026-08-08 20:09 UTCEG score recompute
  31. 2026-08-08 20:09 UTCGHSA enrichment
  32. 2026-08-08 16:37 UTCEPSS rescore
  33. 2026-08-08 08:07 UTCGHSA enrichment
  34. 2026-08-07 20:07 UTCEG score recompute
  35. 2026-08-07 20:07 UTCGHSA enrichment
  36. 2026-08-07 16:30 UTCEPSS rescore
  37. 2026-08-07 08:07 UTCGHSA enrichment
  38. 2026-08-06 20:05 UTCEG score recompute
  39. 2026-08-06 20:05 UTCGHSA enrichment
  40. 2026-08-06 13:47 UTCEPSS rescore
  41. 2026-08-06 08:05 UTCGHSA enrichment
  42. 2026-08-05 20:06 UTCEG score recompute
  43. 2026-08-05 20:06 UTCGHSA enrichment
  44. 2026-08-05 19:17 UTCEPSS rescore
  45. 2026-08-04 15:58 UTCEG score recompute
  46. 2026-08-04 15:58 UTCGHSA enrichment
  47. 2026-08-04 15:10 UTCEPSS rescore
  48. 2026-08-04 10:39 UTCEPSS rescore
  49. 2026-08-04 02:54 UTCGHSA enrichment
  50. 2026-08-03 14:54 UTCEG score recompute
  51. 2026-08-03 14:54 UTCGHSA enrichment
  52. 2026-08-03 10:36 UTCEPSS rescore
  53. 2026-08-02 21:51 UTCGHSA enrichment
  54. 2026-08-02 09:50 UTCEG score recompute
  55. 2026-08-02 09:50 UTCGHSA enrichment
  56. 2026-08-02 02:27 UTCEPSS rescore
  57. 2026-08-01 21:50 UTCGHSA enrichment
  58. 2026-08-01 09:50 UTCEG score recompute
  59. 2026-08-01 09:49 UTCGHSA enrichment
  60. 2026-08-01 04:16 UTCEPSS rescore
  61. 2026-07-31 13:47 UTCGHSA enrichment
  62. 2026-07-31 00:49 UTCEG score recompute
  63. 2026-07-31 00:49 UTCGHSA enrichment
  64. 2026-07-30 16:28 UTCEPSS rescore
  65. 2026-07-30 10:02 UTCEG score recompute
  66. 2026-07-30 10:02 UTCGHSA enrichment
  67. 2026-07-30 01:30 UTCEPSS rescore
  68. 2026-07-29 17:11 UTCGHSA enrichment
  69. 2026-07-29 05:10 UTCEG score recompute
  70. 2026-07-29 05:10 UTCGHSA enrichment
  71. 2026-07-28 15:37 UTCEPSS rescore
  72. 2026-07-28 02:35 UTCEG score recompute
  73. 2026-07-28 02:35 UTCGHSA enrichment
  74. 2026-07-27 14:14 UTCEPSS rescore
  75. 2026-07-27 09:06 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 in the National Vulnerability Database 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% probability of exploitation in the next 30 days, which ranks it in the top 78.2% of all scored CVEs.
What is the CVSS score of CVE-2026-9753?
CVE-2026-9753 has a CVSS v3 base score of 8.1 (NVD).
How do I remediate CVE-2026-9753?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-9753, 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

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