Buffer overflow in Fascinatedbox Lily
CVE-2026-3390
A vulnerability was identified in FascinatedBox lily up to 2.3. This issue affects the function patch_line_end of the file src/lily_build_error.c of the component Error Reporting. The manipulation leads to out-of-bounds read. The attack can only be performed from a local environment. The exploit is publicly available and might be used. The project was informed of the problem early through an issue report but has not responded yet.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 3.3 (Low). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L.
EPSS exploit prediction
EPSS: 0.002 (8.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 8th percentile — 8.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.000
Affected products
- Fascinatedbox Lily — versions 2.0, 2.1, 2.2
- Lily-Lang Lily
Weakness classification (CWE)
References
- vuldb.com/ (technical-description, VDB Entry, Third Party Advisory, vdb-entry)
- vuldb.com/ (signature, Permissions Required, permissions-required, VDB Entry)
- vuldb.com/ (VDB Entry, Third Party Advisory, third-party-advisory)
- github.com/FascinatedBox/lily/issues/382 (issue-tracking, Exploit, Issue Tracking, Vendor Advisory)
- github.com/oneafter/0122/blob/main/i382/repro.lily (Exploit, exploit)
- github.com/FascinatedBox/lily/ (Product, product)
Frequently asked questions
- What is CVE-2026-3390?
- CVE-2026-3390 is a low-severity vulnerability in Fascinatedbox Lily, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 3.3/10. Published 2026-03-01.
- How severe is CVE-2026-3390?
- Low severity. CVSS v3 base score is 3.3 out of 10.