CVE-2026-90784 Details
Description
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.
A memory leak vulnerability has been identified in Dvidelabs Flatcc versions through 0.6.3. The issue arises in the parser component, specifically within the 'fb_clear_parser' function in 'src/Compiler/semantics.c'. This function fails to properly deallocate the 'keyword_index' hash table, which is used to store reserved keywords during schema parsing. As a result, each parsing operation leaks approximately 1KB of memory. The vulnerability can be exploited remotely by parsing a schema that includes FlatBuffers keywords, leading to a denial-of-service condition in persistent processes by exhausting available memory.
Users are advised to update to Flatcc version 0.6.4, where this vulnerability has been fixed.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Sep 14, 2026CISA-ADP
Assessed Sep 14, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/dvidelabs/flatcc/ | [email protected] | Vendor |
| https://github.com/dvidelabs/flatcc/commit/8dbc3419738da066151991fd2bf1d0c85591dea2 | [email protected] | Source CodeVendor |
| https://github.com/dvidelabs/flatcc/issues/389 | [email protected] | ExploitIssue TrackingTechnical AnalysisVendor |
| https://vuldb.com/cve/CVE-2026-90784 | [email protected] | AdvisoryPermission Required |
| https://vuldb.com/submit/919199 | [email protected] | Issue TrackingPermission Required |
| https://vuldb.com/vuln/403290 | [email protected] | AdvisoryPermission Required |
| https://vuldb.com/vuln/403290/cti | [email protected] | Content Wall |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-401 | Missing Release of Memory after Effective Lifetime | [email protected] |
| CWE-404 | Improper Resource Shutdown or Release | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| Dvidelabs flatcc | <= 0.6.3 (semver) |
CPE
Remediation
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Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Sep 14, 2026 | CVE Modified | CISA-ADP |
| Sep 14, 2026 | New CVE Received | [email protected] |