CVEvulnerability
CVE-2026-45130
5.5 MEDIUM
Official page ↗
- Status
- Analyzed
- Published
- 2026-05-08
- Last modified
- 2026-07-24
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 6.6 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H
- CVSS 3.1 ([email protected])
- 5.5 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- Weaknesses
- CWE-122, CWE-190
Description
Vim is an open source, command line text editor. Prior to version 9.2.0450, a heap buffer overflow exists in read_compound() in src/spellfile.c when loading a crafted spell file (.spl) with UTF-8 encoding active. An attacker-controlled length field in the spell file's compound section overflows a 32-bit signed integer multiplication, causing a small buffer to be allocated for a write loop that runs many iterations, overflowing the heap. Because the 'spelllang' option can be set from a modeline, a text file modeline can trigger spell file loading if a malicious .spl file has been planted on the runtimepath. This issue has been patched in version 9.2.0450.
Affected configurations
• neovim neovim (<= 0.12.2)
• vim vim (< 9.2.0450)
Related
References
- https://github.com/vim/vim/commit/92993329178cb1f72d700fff45ca86e1c2d369f8 Patch
- https://github.com/vim/vim/releases/tag/v9.2.0450 Product
- https://github.com/vim/vim/security/advisories/GHSA-q4jv-r9gj-6cwv Exploit, Patch, Vendor Advisory
- http://www.openwall.com/lists/oss-security/2026/05/14/3 Mailing List, Third Party Advisory