6.2

CVE-2026-42199: Grid: Integer Overflow in Grid::expand_rows Leads to Safe-API Undefined Behavior

Deferred
AliasesCGA-4vc5-c4qf-h5p6CGA-6gvw-hrf6-h7qwCGA-c53v-7vvr-h4wf
Published 08-05-2026Last modified 11-05-2026

Vulnerability summary

CVE-2026-42199 is a medium (CVSS 6.2) Integer Overflow or Wraparound vulnerability in becheran grid. EPSS estimates a 0.19% chance of exploitation in the next 30 days, higher than 9.2% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 6.2, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
6.2/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.19%
0%100%
Low · +0.01 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 0 · Related 1
CGA-MH2W-HPGG-2525

Timeline

  1. 08-05-2026
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

Description

Grid is a data structure grid for rust. From version 0.17.0 to before version 1.0.1, an integer overflow in Grid::expand_rows() can corrupt the relationship between the grid’s logical dimensions and its backing storage. After the internal invariant is broken, the safe API get() may invoke get_unchecked() with an invalid index, resulting in Undefined Behavior. This issue has been patched in version 1.0.1.

CVSS metrics

5 scores · 5 sources · 1 version

EPSS trend

Probability

0.19%

Chance of exploitation in the next 30 days

Percentile

9%

Versus all other CVEs

30-day change

Increase +0.01 pp

From 0.18% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: local access, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Becheran1 product
  • grid≥ 0.17.0, < 1.0.1
Chainguard1 product
  • zed< 1.2.3-r0
Crates.Io1 product
  • grid≥ 0.17.0, < 1.0.1
Wolfi1 product
  • zed< 1.2.3-r0

4 vendors · 4 products

References

6 links