CVE-2026-2662 FascinatedBox lily lily_emitter.c count_transforms out-of-bounds
A local attacker can trigger an out-of-bounds read in the lily library's count_transforms function, potentially causing crashes or information disclosure.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-2662?
CVE-2026-2662 is a medium-severity memory corruption vulnerability in FascinatedBox lily, published on 18 Feb 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A weakness has been identified in FascinatedBox lily up to 2.3. This vulnerability affects the function count_transforms of the file src/lily_emitter.c. This manipulation causes out-of-bounds read. The attack can only be executed locally. The exploit has been made available to the public and could be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.
Which versions are affected by CVE-2026-2662?
It affects 1 product.
Products include Lily-Lang Lily.
How do I fix CVE-2026-2662?
No fix has been published for CVE-2026-2662 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-2662 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-2662 exists.
Other vulnerabilities in FascinatedBox lily
- CVE-2026-3390 FascinatedBox lily Error Reporting lily_build_error.c patch_line_end out-of-bounds
- CVE-2026-3391 FascinatedBox lily lily_emitter.c clear_storages out-of-bounds
- CVE-2026-3392 FascinatedBox lily lily_emitter.c eval_tree null pointer dereference
- CVE-2026-2660 FascinatedBox lily lily_symtab.c shorthash_for_name use after free
Sources
Also known as GHSA-mjjq-x58m-rfxp.