{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-101903", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-09-28T15:55:37.907Z", "datePublished": "2026-09-28T17:25:04.448Z", "dateUpdated": "2026-09-28T17:49:24.777Z"}, "containers": {"cna": {"title": "Axios: ReDoS in fromDataURI data: URL parser freezes the Node event loop (DoS)", "problemTypes": [{"descriptions": [{"cweId": "CWE-1333", "lang": "en", "description": "CWE-1333: Inefficient Regular Expression Complexity", "type": "CWE"}]}], "metrics": [{"cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 8.2, "baseSeverity": "HIGH", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N", "version": "4.0"}}], "references": [{"name": "https://github.com/axios/axios/security/advisories/GHSA-c29m-xwm3-cm6r", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/axios/axios/security/advisories/GHSA-c29m-xwm3-cm6r"}, {"name": "https://github.com/axios/axios/pull/11141", "tags": ["x_refsource_MISC"], "url": "https://github.com/axios/axios/pull/11141"}, {"name": "https://github.com/axios/axios/commit/d19040bda7a8be2f82c3c6e1a5bc03917daee39a", "tags": ["x_refsource_MISC"], "url": "https://github.com/axios/axios/commit/d19040bda7a8be2f82c3c6e1a5bc03917daee39a"}, {"name": "https://github.com/axios/axios/releases/tag/v1.20.0", "tags": ["x_refsource_MISC"], "url": "https://github.com/axios/axios/releases/tag/v1.20.0"}], "affected": [{"vendor": "axios", "product": "axios", "versions": [{"version": ">= 1.16.1, < 1.20.0", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-09-28T17:26:41.005Z"}, "descriptions": [{"lang": "en", "value": "Axios is a promise-based HTTP client for the browser and Node.js. From 1.16.1 until 1.20.0, the RFC 2397 regular expression allows slash characters on both sides of the media-type separator. An application passes an attacker-controlled malformed data URL containing many slash characters and no comma. the JavaScript regular-expression engine explores many separator placements before rejecting the URL. Synchronous excessive backtracking can block the Node.js event loop and cause denial of service. The affected identifiers are fromDataURI, DATA_URL_PATTERN, data:. This issue is fixed in version 1.20.0."}], "source": {"advisory": "GHSA-c29m-xwm3-cm6r", "discovery": "UNKNOWN"}}, "adp": [{"references": [{"url": "https://github.com/axios/axios/security/advisories/GHSA-c29m-xwm3-cm6r", "tags": ["exploit"]}], "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-09-28T17:48:43.428191Z", "id": "CVE-2026-101903", "options": [{"Exploitation": "poc"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-09-28T17:49:24.777Z"}}]}}

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{"bugzilla": {"description": "axios: Axios: Denial of Service via malformed data URLs", "id": "2542580", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2542580"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-1333", "details": ["A flaw was found in Axios. A remote attacker can exploit this vulnerability by supplying a crafted data URL containing repeated slash characters to an application that processes untrusted inputs. Due to an inefficient regular expression used to parse the URL, handling the malformed input triggers excessive backtracking that blocks the main execution thread. This freezes application processing and causes a Denial of Service (DoS)."], "name": "CVE-2026-101903", "package_state": [{"cpe": "cpe:/a:redhat:hummingbird:1", "fix_state": "Affected", "package_name": "grafana12.4", "product_name": "Red Hat Hardened Images"}, {"cpe": "cpe:/a:redhat:hummingbird:1", "fix_state": "Affected", "package_name": "grafana13.1", "product_name": "Red Hat Hardened Images"}, {"cpe": "cpe:/a:redhat:hummingbird:1", "fix_state": "Affected", "package_name": "grafana13.2", "product_name": "Red Hat Hardened Images"}, {"cpe": "cpe:/a:redhat:hummingbird:1", "fix_state": "Not affected", "package_name": "jaeger", "product_name": "Red Hat Hardened Images"}], "public_date": "2026-09-28T17:25:04Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-101903\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-101903\nhttps://github.com/axios/axios/commit/d19040bda7a8be2f82c3c6e1a5bc03917daee39a\nhttps://github.com/axios/axios/pull/11141\nhttps://github.com/axios/axios/releases/tag/v1.20.0\nhttps://github.com/axios/axios/security/advisories/GHSA-c29m-xwm3-cm6r"], "threat_severity": "Important"}