CVE-2026-3391 Details
Description
A security flaw has been discovered in FascinatedBox lily up to 2.3. Impacted is the function clear_storages of the file src/lily_emitter.c. The manipulation results in out-of-bounds read. The attack is only possible with local access. The exploit has been released to the public and may be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.
A heap-based buffer overflow vulnerability has been identified in the FascinatedBox Lily interpreter, specifically in versions up to 2.3. The issue arises in the 'clear_storages' function within 'src/lily_emitter.c', where improper handling of storage slots leads to an out-of-bounds read. This vulnerability occurs when the emitter cleans up after leaving a lambda block, causing a read violation at the boundary of an allocated buffer. The vulnerability requires local access to exploit.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Mar 2, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/FascinatedBox/lily/ | [email protected] | Product |
| https://github.com/FascinatedBox/lily/issues/383 | [email protected] | ExploitIssue TrackingVendor Advisory |
| https://github.com/oneafter/0122/blob/main/i383/repro.lily | [email protected] | Exploit |
| https://vuldb.com/?ctiid.348277 | [email protected] | Permissions RequiredVDB Entry |
| https://vuldb.com/?id.348277 | [email protected] | Third Party AdvisoryVDB Entry |
| https://vuldb.com/?submit.761327 | [email protected] | Third Party AdvisoryVDB Entry |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-125 | Out-of-bounds Read | [email protected] |
| CWE-119 | Improper Restriction of Operations within the Bounds of a Memory Buffer | [email protected] |
| CWE-125 | Out-of-bounds Read | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| lily-lang lily | <= 2.3 |
CPE
Remediation
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Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Apr 29, 2026 | Data Remediation | [email protected] |
| Mar 4, 2026 | Initial Analysis | [email protected] |
| Mar 1, 2026 | New CVE Received | [email protected] |