{"id":"CVE-2026-106550","state":"PUBLISHED","title":"CVE-2026-106550","description":"Mozilla's Node-convict (version 6.2.2 and later) is vulnerable to a Denial of Service vulnerability caused by incomplete prototype‑pollution protections in config.set(). An attacker controlling the configuration key can write arbitrary properties to constructor.<key>, which walk() resolves to the global Object function. This allows overwriting core JavaScript methods such as Object.assign, leading to persistent process-wide failures and requiring a restart. The issue bypasses existing filters that only block constructor.prototype.* and __proto__.*. Exploitation requires an endpoint that forwards attacker-controlled keys into config.set().","publishedAt":"2026-10-06T20:09:55.919Z","updatedAt":"2026-10-07T19:33:03.505Z","severity":{"score":7.5,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","source":"CISA-ADP"},"assigner":"certcc","products":["Mozilla Node-convict"],"affected":[{"vendor":"Mozilla","product":"Node-convict","versions":[{"version":"6.2.2","status":"affected"}]}],"references":["https://github.com/mozilla/node-convict","https://github.com/tomasilluminati/security-research/blob/main/CVE-2026-106550/README.md"],"weaknesses":["CWE-1321","CWE-915","CWE-400"],"ingestedAt":"2026-10-29T20:10:23.711Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/106xxx/CVE-2026-106550.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-106550","state":"PUBLISHED","datePublished":"2026-10-06T20:09:55.919Z","dateUpdated":"2026-10-07T19:33:03.505Z","assignerShortName":"certcc","assignerOrgId":"37e5125f-f79b-445b-8fad-9564f167944b","dateReserved":"2026-10-06T20:07:46.075Z"},"containers":{"cna":{"title":"CVE-2026-106550","descriptions":[{"lang":"en","value":"Mozilla's Node-convict (version 6.2.2 and later) is vulnerable to a Denial of Service vulnerability caused by incomplete prototype‑pollution protections in config.set(). An attacker controlling the configuration key can write arbitrary properties to constructor.<key>, which walk() resolves to the global Object function. This allows overwriting core JavaScript methods such as Object.assign, leading to persistent process-wide failures and requiring a restart. The issue bypasses existing filters that only block constructor.prototype.* and __proto__.*. Exploitation requires an endpoint that forwards attacker-controlled keys into config.set()."}],"affected":[{"vendor":"Mozilla","product":"Node-convict","versions":[{"version":"6.2.2","status":"affected"}]}],"references":[{"url":"https://github.com/mozilla/node-convict"},{"url":"https://github.com/tomasilluminati/security-research/blob/main/CVE-2026-106550/README.md"}],"problemTypes":[{"descriptions":[{"lang":"en","description":"CWE-1321: Improperly Controlled Modification of Object Prototype Attributes (‘Prototype Pollution’)"}]},{"descriptions":[{"lang":"en","description":"CWE-915: Improperly Controlled Modification of Dynamically-Determined Object Attributes"}]},{"descriptions":[{"lang":"en","description":"CWE-400: Uncontrolled Resource Consumption (‘Denial of Service’)"}]}],"providerMetadata":{"shortName":"certcc","orgId":"37e5125f-f79b-445b-8fad-9564f167944b","dateUpdated":"2026-10-07T19:33:03.505Z"},"source":{"discovery":"UNKNOWN"},"x_generator":{"engine":"VINCE 3.0.50","env":"prod","origin":"https://cveawg.mitre.org/api/cve/CVE-2026-106550"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":7.5,"attackVector":"NETWORK","baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"NONE","confidentialityImpact":"NONE"}},{"other":{"type":"ssvc","content":{"timestamp":"2026-10-07T15:05:14.037126Z","id":"CVE-2026-106550","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-1321","type":"CWE","lang":"en","description":"CWE-1321 Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')"},{"cweId":"CWE-915","type":"CWE","lang":"en","description":"CWE-915 Improperly Controlled Modification of Dynamically-Determined Object Attributes"},{"cweId":"CWE-400","type":"CWE","lang":"en","description":"CWE-400 Uncontrolled Resource Consumption"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-07T15:05:19.730Z"}}]}}}