CVE-2026-90784

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 week
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: None knownExposed: 0

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

A vulnerability has been found in Dvidelabs flatcc up to 0.6.3. The impacted element is the function fb_clear_parser of the file src/Compiler/semantics.c. The manipulation leads to memory leak. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. The identifier of the patch is 8dbc3419738da066151991fd2bf1d0c85591dea2. It is suggested to install a patch to address this issue.

CVSS v3
5.3
EG Score
5.3(high)
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
Severity53% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
36%
KEV
Not listed

Published

September 14, 2026

Last Modified

September 14, 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 8dbc3419738d (dvidelabs/flatcc)

Fix landed in dvidelabs/flatcc commit 8dbc3419738d — awaiting tagged release

https://github.com/dvidelabs/flatcc/commit/8dbc3419738da066151991fd2bf1d0c85591dea2
generic

[Bug]per-parse ~1KB heap leak: fb_clear_parser() never frees the reserved-keyword hash table (CWE-401) · Issue #389 · dvidelabs/flatcc · GitHub

https://github.com/dvidelabs/flatcc/issues/389

Vendor Advisories for CVE-2026-90784(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 18× in last 7d / 18× 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 16:59 UTCEG score recompute
  2. 2026-09-19 16:59 UTCGHSA enrichment
  3. 2026-09-18 19:28 UTCEPSS rescore
  4. 2026-09-18 18:16 UTCGHSA enrichment
  5. 2026-09-17 19:33 UTCEG score recompute
  6. 2026-09-17 19:33 UTCGHSA enrichment
  7. 2026-09-17 19:32 UTCEPSS rescore
  8. 2026-09-16 18:31 UTCEG score recompute
  9. 2026-09-16 18:31 UTCGHSA enrichment
  10. 2026-09-16 14:09 UTCEPSS rescore
  11. 2026-09-16 05:15 UTCEPSS rescore
  12. 2026-09-15 19:47 UTCGHSA enrichment
  13. 2026-09-14 21:04 UTCEG score recompute
  14. 2026-09-14 21:04 UTCGHSA enrichment
  15. 2026-09-14 13:28 UTCEG score recompute
  16. 2026-09-14 13:28 UTCNVD updateCVSS v4 → 5.5
  17. 2026-09-14 13:10 UTCEG score recompute
  18. 2026-09-14 13:09 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-90784?
CVE-2026-90784 is a medium vulnerability published on September 14, 2026. A vulnerability has been found in Dvidelabs flatcc up to 0.6.3. The impacted element is the function fbclearparser of the file src/Compiler/semantics.c. The manipulation leads to memory leak. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be…
When was CVE-2026-90784 disclosed?
CVE-2026-90784 was first published in the National Vulnerability Database on September 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-90784 actively exploited?
CVE-2026-90784 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-2026-90784?
CVE-2026-90784 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2026-90784?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-90784, 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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