Service interruption via unreleased parser keyword table
Published Sep 14, 2026 · Updated Sep 14, 2026
Memory leak in the FlatCC schema parser 0.6.0 through 0.6.3 allows attackers to exhaust process memory via repeated schema parsing. fb_clear_parser frees the attribute and include indexes but omits the allocated keyword_index table, leaking about 1 KB after every valid schema parse. Exploitation requires attacker-controlled schemas to be parsed repeatedly within one persistent process, eventually causing a hang or crash from memory exhaustion.
Summary
What happened
Memory leak in the FlatCC schema parser 0.6.0 through 0.6.3 allows attackers to exhaust process memory via repeated schema parsing. fb_clear_parser frees the attribute and include indexes but omits the allocated keyword_index table, leaking about 1 KB after every valid schema parse. Exploitation requires attacker-controlled schemas to be parsed repeatedly within one persistent process, eventually causing a hang or crash from memory exhaustion.
The record
- CVE
- CVE-2026-90784
- Published
- Sep 14, 2026
- Updated
- Sep 14, 2026
- Vendor
- Dvidelabs
- Product
- FlatCC
- Classifications
- CWE-401, T1499.004
- Attack vector
- Unavailable
- Privileges
- Unavailable
Timeline
How it unfolded
- Sep 14, 2026CVE publishedPublication date reported by the CVE source.
- Sep 14, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0.6.0
- Affected versionversion=0.6.1
- Affected versionversion=0.6.2
- Affected versionversion=0.6.3
What conditions does exploitation require?
What is affected?
Published CVSS scores
No CVSS assessment is available in this record.
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- FlatCC issue 389 LeakSanitizer reproducerproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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