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CVE-2026-114142

8.8 high SSVC exploitation: none Deferred
NVD · CVE.org

toml-node is a TOML parser for Node.js and the browser. Prior to 5.0.1, toml.parse() can write attacker-controlled properties to Object.prototype because quoteDottedString() in lib/compiler.js produces the same bookkeeping string for distinct quoted key paths, allowing addTableArray() to clear another key's guard. The assign() path then descends through an unowned Date value without applying the owned-container check and can reach the prototype chain. Objects created elsewhere in the process can inherit the injected property. This issue is fixed in version 5.0.1.

Fix

Nothing published yet: no patch, vendor advisory or mitigation reference on NVD, no vendor advisory in the News for this CVE, not in CISA's KEV, no fixed package version. BaselineWatch does not guess at one.

Change history 5

  1. StatusPublished → DeferredNVD modified 2026-10-22 16:48
  2. StatusReceived → PublishedNVD modified 2026-10-21 20:28
  3. StatusPublished → ReceivedNVD modified 2026-10-21 21:17
  4. CVSS8.8 (v4.0, CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N) → 8.8 (v4.0, CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/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:X)NVD modified 2026-10-21 21:17
  5. First seenCVSS 8.8 · binarymuseNVD modified 2026-10-21 20:28

Affected (CPE criteria) 0

NVD has not attached CPE configurations yet.

References 3