CVE-2026-115379 (GCVE-0-2026-115379)

Vulnerability from cvelistv5 – Published: 2026-10-22 19:13 – Updated: 2026-10-22 19:13
VLAI
Title
Wasmtime 47.0.0 before 48.0.4 and 49.0.0 before 49.0.2 GC Heap Corruption via try_call
Summary
Wasmtime 47.0.0 before 48.0.4 and 49.0.0 before 49.0.2 contains a missing GC rooting vulnerability that leaves references live across try_call unrooted when compiling Wasm modules. Attackers can supply Wasm modules whose callee triggers garbage collection, leaving stale or dangling references that cause GC heap corruption or incorrect execution.
Severity
6.9 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
5.7 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H
CWE
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 6762 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
bytecodealliance wasmtime Affected: 47.0.0 , < 48.0.4 (semver)
Unaffected: 48.0.4 (semver)
Affected: 49.0.0 , < 49.0.2 (semver)
Unaffected: 49.0.2 (semver)
    cpe:2.3:a:bytecodealliance:wasmtime:*:*:*:*:*:*:*:*
    cpe:2.3:a:bytecodealliance:wasmtime:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-10-02 00:00
Show details on NVD website
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{
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          "packageURL": "pkg:cargo/wasmtime",
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          "name": "GitHub Security Advisory (GHSA-hw8m-q44c-ggrf)",
          "tags": [
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          "url": "https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-hw8m-q44c-ggrf"
        },
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      "title": "Wasmtime 47.0.0 before 48.0.4 and 49.0.0 before 49.0.2 GC Heap Corruption via try_call",
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    "assignerShortName": "VulnCheck",
    "cveId": "CVE-2026-115379",
    "datePublished": "2026-10-22T19:13:47.737Z",
    "dateReserved": "2026-10-22T11:25:27.610Z",
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    "state": "PUBLISHED"
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          }
        ],
        "id": "CVE-2026-115379",
        "lastModified": "2026-10-22T19:17:44.860",
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                "Recovery": "NOT_DEFINED",
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                "modifiedSubConfidentialityImpact": "NOT_DEFINED",
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                "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
                "modifiedVulnIntegrityImpact": "NOT_DEFINED",
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      "cve": "CVE-2026-115379",
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      "product_status:known_affected": "4",
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      "title": "wasmtime: Wasmtime: Denial of Service via missing garbage collection rooting",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-115379.json",
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}



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