{"id":36912,"date":"2026-01-25T09:54:38","date_gmt":"2026-01-25T09:54:38","guid":{"rendered":"http:\/\/localhost\/?p=36912"},"modified":"2026-01-25T09:54:38","modified_gmt":"2026-01-25T09:54:38","slug":"prototype-pollution-vulnerability-in-lodash-unset-and-omit-functions","status":"publish","type":"post","link":"https:\/\/zero.redgem.net\/?p=36912","title":{"rendered":"Prototype Pollution Vulnerability in Lodash _.unset and _.omit functions_CVE-2025-13465"},"content":{"rendered":"<p>{&#8220;lastseen&#8221;:&#8221;&#8221;,&#8221;description&#8221;:&#8221;Lodash versions 4.0.0 through 4.17.22 are vulnerable to prototype pollution in the _.unset\u00a0and _.omit\u00a0functions. An attacker can pass crafted paths which cause Lodash to delete methods from global prototypes.\\n\\nThe issue permits deletion of properties but does not allow overwriting their original behavior.\\n\\nThis issue is patched on 4.17.23&#8243;,&#8221;published&#8221;:&#8221;2026-01-21T19:05:28.846Z&#8221;,&#8221;modified&#8221;:&#8221;2026-01-21T19:43:38.268Z&#8221;,&#8221;type&#8221;:&#8221;cve&#8221;,&#8221;title&#8221;:&#8221;Prototype Pollution Vulnerability in Lodash _.unset and _.omit functions&#8221;,&#8221;source&#8221;:&#8221;openjs&#8221;,&#8221;references&#8221;:&#8221;https:\/\/github.com\/lodash\/lodash\/security\/advisories\/GHSA-xxjr-mmjv-4gpg&#8221;,&#8221;id&#8221;:&#8221;CVE-2025-13465&#8243;,&#8221;bulletinFamily&#8221;:&#8221;&#8221;,&#8221;cwe&#8221;:[&#8220;CWE-1321&#8243;],&#8221;cvelist&#8221;:null,&#8221;sourceData&#8221;:&#8221;Lodash Lodash 4.0.0\\nLodash-amd Lodash-amd 4.0.0\\nlodash-es lodash-es 4.0.0\\nlodash.unset lodash.unset 4.0.0&#8243;,&#8221;sourceHref&#8221;:&#8221;&#8221;,&#8221;cvss&#8221;:{&#8220;score&#8221;:6.9,&#8221;severity&#8221;:&#8221;MEDIUM&#8221;,&#8221;vector&#8221;:&#8221;CVSS:4.0\/AV:N\/AC:L\/AT:N\/PR:N\/UI:N\/VC:N\/VI:L\/VA:L\/SC:H\/SI:H\/SA:H\/E:P&#8221;,&#8221;version&#8221;:&#8221;4.0&#8243;},&#8221;cvss2&#8243;:{},&#8221;cvss3&#8243;:{&#8220;version&#8221;:&#8221;&#8221;,&#8221;vectorString&#8221;:&#8221;&#8221;,&#8221;baseScore&#8221;:0,&#8221;baseSeverity&#8221;:&#8221;&#8221;,&#8221;attackVector&#8221;:&#8221;&#8221;,&#8221;attackComplexity&#8221;:&#8221;&#8221;,&#8221;privilegesRequired&#8221;:&#8221;&#8221;,&#8221;userInteraction&#8221;:&#8221;&#8221;,&#8221;scope&#8221;:&#8221;&#8221;,&#8221;confidentialityImpact&#8221;:&#8221;&#8221;,&#8221;integrityImpact&#8221;:&#8221;&#8221;,&#8221;availabilityImpact&#8221;:&#8221;&#8221;,&#8221;cvssV3&#8243;:{&#8220;version&#8221;:&#8221;&#8221;,&#8221;vectorString&#8221;:&#8221;&#8221;,&#8221;baseScore&#8221;:0,&#8221;baseSeverity&#8221;:&#8221;&#8221;,&#8221;attackVector&#8221;:&#8221;&#8221;,&#8221;attackComplexity&#8221;:&#8221;&#8221;,&#8221;privilegesRequired&#8221;:&#8221;&#8221;,&#8221;userInteraction&#8221;:&#8221;&#8221;,&#8221;scope&#8221;:&#8221;&#8221;,&#8221;confidentialityImpact&#8221;:&#8221;&#8221;,&#8221;integrityImpact&#8221;:&#8221;&#8221;,&#8221;availabilityImpact&#8221;:&#8221;&#8221;}},&#8221;href&#8221;:&#8221;&#8221;,&#8221;category_name&#8221;:&#8221;CVE&#8221;,&#8221;post_link&#8221;:&#8221;&#8221;,&#8221;product&#8221;:&#8221;Lodash&#8221;,&#8221;version&#8221;:&#8221;4.0.0&#8243;,&#8221;vendor&#8221;:&#8221;Lodash&#8221;,&#8221;ai_description&#8221;:&#8221;&#8221;,&#8221;ai_severity&#8221;:&#8221;&#8221;,&#8221;ai_vendor&#8221;:&#8221;&#8221;,&#8221;ai_product&#8221;:&#8221;&#8221;,&#8221;ai_version&#8221;:&#8221;&#8221;,&#8221;ai_score&#8221;:0}<\/p>\n","protected":false},"excerpt":{"rendered":"<p>{&#8220;lastseen&#8221;:&#8221;&#8221;,&#8221;description&#8221;:&#8221;Lodash versions 4.0.0 through 4.17.22 are vulnerable to prototype pollution in the _.unset\u00a0and _.omit\u00a0functions. 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