CVE-2026-73071: vim Use After Free
Vulnerability summary
CVE-2026-73071 is a low (CVSS 3.3) Use After Free vulnerability in vim. EPSS estimates a 0.11% chance of exploitation in the next 30 days, higher than 1.1% of scored vulnerabilities.
Advisory lineage
Upstream 0 · Downstream 11 · Related 10Timeline
- 11-08-2026PublishedVulnerability first disclosed.
- 11-08-2026Last modifiedVulnerability information updated.
Description
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 metrics
5 scores · 5 sources · 1 version- OSV · AlpineEcosystem advisory · calculated3.3LowCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
- OSV · UbuntuEcosystem advisory · calculated3.3LowCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
- OSV · DebianEcosystem advisory · calculated3.3LowCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
- NVDNIST3.3LowCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
EPSS trend
Probability
0.11%
Chance of exploitation in the next 30 days
Percentile
1%
Versus all other CVEs
30-day change
0.00 pp
From 0.11% on 20-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Alpine1 product
- vim≥ 9.2.0511, < 9.2.0854-r0
Debian1 product
- vim< 2:9.2.0858-1
Ubuntu1 product
- vim< 2:8.2.3995-1ubuntu2.35 | < 2:9.1.0016-1ubuntu7.19 | < 2:9.1.2141-1ubuntu4.8
Vim1 product
- vim≥ 9.2.0511, < 9.2.0844
4 vendors · 4 products
References
9 links- github.com/vim/vim/security/advisories/GHSA-69ch-22ch-r887X Refsource CONFIRMREPORTPatchVendor Advisory
