170 lines
7.8 KiB
JSON
170 lines
7.8 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-73420",
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"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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"state": "PUBLISHED",
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"assignerShortName": "GitHub_M",
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"dateReserved": "2026-08-12T14:32:11.795Z",
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"datePublished": "2026-08-13T22:04:15.414Z",
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"dateUpdated": "2026-08-14T15:06:00.594Z"
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},
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"containers": {
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"cna": {
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"title": "NextAuth.js: Email normalizer validates the address before Unicode normalization, allowing a homoglyph @ bypass",
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-180",
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"lang": "en",
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"description": "CWE-180: Incorrect Behavior Order: Validate Before Canonicalize",
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"type": "CWE"
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}
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]
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}
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],
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"metrics": [
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{
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"cvssV4_0": {
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"attackVector": "NETWORK",
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"attackComplexity": "LOW",
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"attackRequirements": "PRESENT",
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"privilegesRequired": "NONE",
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"userInteraction": "NONE",
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"vulnConfidentialityImpact": "HIGH",
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"vulnIntegrityImpact": "HIGH",
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"vulnAvailabilityImpact": "NONE",
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"subConfidentialityImpact": "NONE",
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"subIntegrityImpact": "NONE",
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"subAvailabilityImpact": "NONE",
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"baseScore": 9.1,
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"baseSeverity": "CRITICAL",
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"vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N",
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"version": "4.0"
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}
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}
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],
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"references": [
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{
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"name": "https://github.com/nextauthjs/next-auth/security/advisories/GHSA-7rqj-j65f-68wh",
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"tags": [
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"x_refsource_CONFIRM"
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],
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"url": "https://github.com/nextauthjs/next-auth/security/advisories/GHSA-7rqj-j65f-68wh"
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},
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{
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"name": "https://github.com/nextauthjs/next-auth/commit/19d2feb24359fa8c79418907fc68d9ec8152ca94",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/nextauthjs/next-auth/commit/19d2feb24359fa8c79418907fc68d9ec8152ca94"
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},
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{
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"name": "https://github.com/nextauthjs/next-auth/commit/a63eee12a1a20cb35209e44195b097868517b9a0",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/nextauthjs/next-auth/commit/a63eee12a1a20cb35209e44195b097868517b9a0"
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},
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{
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"name": "https://github.com/nextauthjs/next-auth/releases/tag/@auth/core@0.41.3",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/nextauthjs/next-auth/releases/tag/@auth/core@0.41.3"
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},
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{
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"name": "https://github.com/nextauthjs/next-auth/releases/tag/next-auth@4.24.15",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/nextauthjs/next-auth/releases/tag/next-auth@4.24.15"
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},
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{
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"name": "https://github.com/nextauthjs/next-auth/releases/tag/next-auth@5.0.0-beta.32",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/nextauthjs/next-auth/releases/tag/next-auth@5.0.0-beta.32"
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}
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],
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"affected": [
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{
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"vendor": "nextauthjs",
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"product": "next-auth",
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"versions": [
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{
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"version": "< 4.24.15",
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"status": "affected"
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},
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{
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"version": ">= 5.0.0-beta.4, < 5.0.0-beta.32",
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"status": "affected"
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}
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]
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},
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{
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"vendor": "@auth",
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"product": "core",
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"versions": [
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{
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"version": ">= 0.1.0, < 0.41.3",
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"status": "affected"
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}
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]
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}
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],
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"providerMetadata": {
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"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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"shortName": "GitHub_M",
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"dateUpdated": "2026-08-13T22:04:15.414Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "NextAuth.js provides authentication for Next.js. Prior to @auth/core 0.41.3 and next-auth 4.24.15 and 5.0.0-beta.32, the defaultNormalizer used by the email and magic-link sign-in flow validates an address before applying Unicode normalization. An address can contain a Unicode character such as U+FF20 FULLWIDTH COMMERCIAL AT that is not ASCII at-sign but canonicalizes to an ASCII at-sign under NFKC or NFKD normalization. The address passes the normalizer's single-at-sign check, but a downstream sendVerificationRequest mail library or delivery service that normalizes the address can then see two at-sign separators and deliver the passwordless sign-in link to an attacker-controlled recipient. Applications are affected when the email provider uses the built-in normalizer rather than a custom normalizeIdentifier and the downstream sender applies Unicode normalization. An attacker who knows a victim's email address can request the misrouted magic link and sign in as the victim without victim interaction. This issue is fixed in @auth/core 0.41.3 and next-auth 4.24.15 and 5.0.0-beta.32."
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}
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],
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"source": {
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"advisory": "GHSA-7rqj-j65f-68wh",
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"discovery": "UNKNOWN"
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}
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},
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"adp": [
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{
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"metrics": [
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{
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"other": {
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"type": "ssvc",
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"content": {
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"timestamp": "2026-08-14T15:05:10.354847Z",
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"id": "CVE-2026-73420",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "yes"
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},
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{
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"Technical Impact": "total"
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}
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],
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"role": "CISA Coordinator",
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"version": "2.0.3"
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}
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}
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2026-08-14T15:06:00.594Z"
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}
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}
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]
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}
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} |