CVE-2026-90785

MEDIUMPre-NVD 5.35.3—
EchelonGraph scoreHIGH confidence

Score 5.3 from GitHub Security Advisory published 2026-09-14. a secondary CVSS source baseline 5.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 5 sources updated this weekElevated
5.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.3Exploit: Elevated riskExposed: 0

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

A vulnerability was found in Dvidelabs flatcc up to 0.6.3. This affects the function analyze_struct of the file src/compiler/semantics.c of the component Struct Analysis. The manipulation results in reachable assertion. It is possible to launch the attack remotely. The exploit has been made public and could be used. The patch is identified as f705032346ee39efd7d3848c50b73d455d28d06d. A patch should be applied to remediate this issue.

CVSS v3
5.3
EG Score
5.3(high)
EG Risk
55(Attend)
EG Risk 55/100SSVC: Attend

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
Severity53% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
0%
EPSS %ILE
36%
KEV
Not listed

Published

September 14, 2026

Last Modified

September 15, 2026

Advisory Details (3)

Auto-updated Sep 14, 2026
Upstream fix merged — awaiting tagged release. Sources: github_commit.
generic

GitHub - dvidelabs/flatcc: FlatBuffers Compiler and Library in C for C · GitHub

https://github.com/dvidelabs/flatcc/
github_commit

commit f705032346ee (dvidelabs/flatcc)

Fix landed in dvidelabs/flatcc commit f705032346ee — awaiting tagged release

https://github.com/dvidelabs/flatcc/commit/f705032346ee39efd7d3848c50b73d455d28d06d
generic

[Bug]reachable assertion abort in analyze_struct() on a circular struct reference (CWE-617) · Issue #388 · dvidelabs/flatcc · GitHub

https://github.com/dvidelabs/flatcc/issues/388

Vendor Advisories for CVE-2026-90785(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 24× in last 7d / 24× 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. 2026-09-19 07:05 UTCEG score recompute
  2. 2026-09-19 07:05 UTCGHSA enrichment
  3. 2026-09-18 19:28 UTCEPSS rescore
  4. 2026-09-18 08:58 UTCEG score recompute
  5. 2026-09-18 08:58 UTCGHSA enrichment
  6. 2026-09-17 19:32 UTCEPSS rescore
  7. 2026-09-17 10:50 UTCEG score recompute
  8. 2026-09-17 10:50 UTCGHSA enrichment
  9. 2026-09-16 14:09 UTCEPSS rescore
  10. 2026-09-16 12:42 UTCEG score recompute
  11. 2026-09-16 12:42 UTCGHSA enrichment
  12. 2026-09-16 05:15 UTCEPSS rescore
  13. 2026-09-15 14:35 UTCEG score recompute
  14. 2026-09-15 14:35 UTCGHSA enrichment
  15. 2026-09-15 14:31 UTCNVD updateCVSS v4 → 5.5
  16. 2026-09-15 14:03 UTCEG score recompute
  17. 2026-09-15 14:03 UTCGHSA enrichment
  18. 2026-09-15 14:02 UTCMITRE cvelistV5CVSS v4 → 6.9
  19. 2026-09-14 21:04 UTCEG score recompute
  20. 2026-09-14 21:04 UTCGHSA enrichment
  21. 2026-09-14 14:30 UTCEG score recompute
  22. 2026-09-14 14:29 UTCNVD updateCVSS v4 → 5.5
  23. 2026-09-14 13:30 UTCEG score recompute
  24. 2026-09-14 13:29 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-90785?
CVE-2026-90785 is a medium vulnerability published on September 14, 2026. A vulnerability was found in Dvidelabs flatcc up to 0.6.3. This affects the function analyze_struct of the file src/compiler/semantics.c of the component Struct Analysis. The manipulation results in reachable assertion. It is possible to launch the attack remotely. The exploit has been made public…
When was CVE-2026-90785 disclosed?
CVE-2026-90785 was first published in the National Vulnerability Database on September 14, 2026, with the most recent update on September 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-90785 actively exploited?
CVE-2026-90785 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 64.2% of all scored CVEs.
What is the CVSS score of CVE-2026-90785?
CVE-2026-90785 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2026-90785?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-90785, 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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