Out-of-bounds read via unchecked numeric prefix access
Published Sep 14, 2026 · Updated Sep 14, 2026
Out-of-bounds read in Gravity 0.9.0 through 0.9.7 allows attackers to read past a numeric-token buffer via crafted source code. The parse_number_expression function in src/compiler/gravity_parser.c reads value[1] while checking 0x, 0b, or 0o prefixes without first confirming that the token contains two bytes. Exposure requires compiling attacker-controlled Gravity source; a final bare 0 causes a one-byte over-read, with no published data disclosure or code execution.
Summary
What happened
Out-of-bounds read in Gravity 0.9.0 through 0.9.7 allows attackers to read past a numeric-token buffer via crafted source code. The parse_number_expression function in src/compiler/gravity_parser.c reads value[1] while checking 0x, 0b, or 0o prefixes without first confirming that the token contains two bytes. Exposure requires compiling attacker-controlled Gravity source; a final bare 0 causes a one-byte over-read, with no published data disclosure or code execution.
The record
- CVE
- CVE-2026-90716
- Published
- Sep 14, 2026
- Updated
- Sep 14, 2026
- Vendor
- Marco Bambini
- Product
- Gravity
- Classifications
- CWE-125
- Attack vector
- network
- Privileges
- unauthenticated
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=0.9.0
- Affected versionversion=0.9.1
- Affected versionversion=0.9.2
- Affected versionversion=0.9.3
- Affected versionversion=0.9.4
- Affected versionversion=0.9.5
- Affected versionversion=0.9.6
- Affected versionversion=0.9.7
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
- Issue 446 bare-zero proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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