CVE-2026-115389

lowpriority · track · 9

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

— EPSS

CVSS 2.3 · low

Is it mine?

0 products

Check your exposure

Who says so?

— sources

Wasmtime before 36.0.16, 37.0.0 before 48.0.3, and 49.0.0 before 49.0.1 does not adequately account for host allocations when lifting guest values through the dynamically-typed Val API, bypassing the hostcall fuel limit. A malicious WebAssembly guest can return crafted values that allocate at least ~100x more host memory than tracked, causing denial of service.

cvss

Technical severity, 0–10. One row per scoring source.

2.3

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.12.3lowCVSS:3.1/AV:A/AC:H/PR:L/UI:R/S:U/C:N/I:N/A:Lprimary · disclosure@vulncheck.comexploitability 0.9 · impact 1.4

v4.01lowCVSS:4.0/AV:A/AC:H/AT:P/PR:L/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Xsecondary · disclosure@vulncheck.com

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-770USprimaryCWE-770US

affected products

Products and version ranges known to be affected.

No affected products recorded.

sources

Which sources assert this record, and when.

NVD CVE.org MITRE

published 2026-10-22modified 2026-10-22

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+3224 more

references (2) nvd

External citations — patches, advisories, analysis.

scry

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