CVE-2026-73071

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 3.1

3.3CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

EPSS

0.1% chance of exploitation in the next 30 days; higher than 1% of CVEs (scores of 2026-10-25)

CWE

CWE-416

Published

2026-08-11

Modified

2026-10-06

Record from

the NVD, synced 2026-10-19

Affected

• vim:vim

References

• https://github.com/vim/vim/commit/f8126294a526aa80c5123eb3079e325daee9ec75
• https://github.com/vim/vim/releases/tag/v9.2.0844
• https://github.com/vim/vim/security/advisories/GHSA-69ch-22ch-r887

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