Low 3.3Published Aug 11, 2026

CVE-2026-73071Vim: Use-after-free in JSON Decoding

Updated under an hour ago (2026-10-19 06:10 UTC)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

Vim is an open source, command line text editor. From 9.2.0511 until 9.2.0844, json_decode_item() in src/json.c can retain a stale pointer after json_decode_string() invokes channel_fill() to refill and free the current buffer, causing the error path to read freed memory instead of reader->js_buf + reader->js_used when an invalid JSON string spans buffers. This issue is fixed in version 9.2.0844.

CVSS: 3.3 LOW (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Weakness (CWE): CWE-416
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Analyzed
Record last updated: Aug 11, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

vim vim vim:vim (from the name)	from 9.2.0511, < 9.2.0844	CNA record
vim vim vim:vim	from 9.2.0511 before 9.2.0844	NVD

References

https://github.com/vim/vim/security/advisories/GHSA-69ch-22ch-r887x-refsource-confirm, patch, vendor-advisory
https://github.com/vim/vim/commit/f8126294a526aa80c5123eb3079e325daee9ec75x-refsource-misc, patch
https://github.com/vim/vim/releases/tag/v9.2.0844x-refsource-misc, product

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.