CVE-2026-88035

MEDIUMNVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 5.5 under NVD CVSS v3. EPSS exploit probability: 0.1%, top 99% of all CVEs by exploit prediction. GitHub Security Advisory enrichment pending alignment with NVD CVSS.

Triggered by: NVD CVSS baseline
Sources: epss, ghsa, nvd
Trending — 4 sources updated this week
5.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.5Exploit: None knownExposed: 0

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

A size check in the client-side authentication path of the MongoDB C Driver can wrap around, so an unusually large user-name value is accepted and copied past the end of a small buffer. A party able to set the driver's connection settings may cause the application that embeds the driver to terminate unexpectedly. Reaching this code requires a build in which the optional external SASL authentication backend is present and a connection configured to use it.

CVSS v3
5.5
EG Score
5.5(medium)
EG Risk
29(Track)
EG Risk 29/100SSVC: 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
Severity55% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
1%
KEV
Not listed

Published

September 10, 2026

Last Modified

September 16, 2026

Advisory Details (1)

Auto-updated Sep 10, 2026
No patch confirmed yet.
generic

Loading...

https://jira.mongodb.org/browse/CDRIVER-6416

Vendor Advisories for CVE-2026-88035(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 18× 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.

  1. 2026-09-20 23:58 UTCGHSA enrichment
  2. 2026-09-19 22:38 UTCEG score recompute
  3. 2026-09-19 22:38 UTCGHSA enrichment
  4. 2026-09-18 21:19 UTCEG score recompute
  5. 2026-09-18 21:19 UTCGHSA enrichment
  6. 2026-09-18 19:28 UTCEPSS rescore
  7. 2026-09-17 19:46 UTCEG score recompute
  8. 2026-09-17 19:46 UTCGHSA enrichment
  9. 2026-09-17 19:32 UTCEPSS rescore
  10. 2026-09-16 18:10 UTCEG score recompute▲ 0.80
  11. 2026-09-16 18:10 UTCGHSA enrichment
  12. 2026-09-16 18:09 UTCNVD updateCVSS v3 → 5.5
  13. 2026-09-16 14:09 UTCEPSS rescore
  14. 2026-09-16 05:15 UTCEPSS rescore
  15. 2026-09-16 02:37 UTCEG score recompute
  16. 2026-09-16 02:37 UTCGHSA enrichment
  17. 2026-09-15 03:12 UTCEPSS rescore
  18. 2026-09-15 01:17 UTCGHSA enrichment
  19. 2026-09-13 23:57 UTCEG score recompute
  20. 2026-09-13 23:57 UTCGHSA enrichment
  21. 2026-09-13 16:48 UTCEPSS rescore
  22. 2026-09-12 22:38 UTCEG score recompute
  23. 2026-09-12 22:38 UTCGHSA enrichment
  24. 2026-09-12 15:02 UTCEPSS rescore
  25. 2026-09-11 21:18 UTCEG score recompute
Show 6 more
  1. 2026-09-11 21:18 UTCGHSA enrichment
  2. 2026-09-11 14:53 UTCEPSS rescore
  3. 2026-09-11 14:53 UTCEPSS rescore
  4. 2026-09-10 19:18 UTCEG score recompute
  5. 2026-09-10 18:25 UTCEG score recompute
  6. 2026-09-10 18:24 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-88035?
CVE-2026-88035 is a medium vulnerability published on September 10, 2026. A size check in the client-side authentication path of the MongoDB C Driver can wrap around, so an unusually large user-name value is accepted and copied past the end of a small buffer. A party able to set the driver's connection settings may cause the application that embeds the driver to…
When was CVE-2026-88035 disclosed?
CVE-2026-88035 was first published in the National Vulnerability Database on September 10, 2026, with the most recent update on September 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-88035 actively exploited?
CVE-2026-88035 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 98.9% of all scored CVEs.
What is the CVSS score of CVE-2026-88035?
CVE-2026-88035 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2026-88035?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-88035, 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-2026-88035

Explore →

Is Your Infrastructure Affected by CVE-2026-88035?

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

Start Free Scan →Browse All CVEs