126 lines
5.2 KiB
JSON
126 lines
5.2 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-2026-33868",
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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": "2026-03-24T15:10:05.678Z",
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"datePublished": "2026-03-27T19:50:07.687Z",
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"dateUpdated": "2026-03-31T18:54:24.919Z"
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},
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"containers": {
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"cna": {
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"title": "Mastodon has a GET-Based Open Redirect via '/web/%2F<domain>'",
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-601",
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"lang": "en",
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"description": "CWE-601: URL Redirection to Untrusted Site ('Open Redirect')",
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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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"cvssV3_1": {
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"attackComplexity": "LOW",
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"attackVector": "NETWORK",
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"availabilityImpact": "NONE",
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"baseScore": 4.3,
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"baseSeverity": "MEDIUM",
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"confidentialityImpact": "NONE",
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"integrityImpact": "LOW",
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"privilegesRequired": "NONE",
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"scope": "UNCHANGED",
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"userInteraction": "REQUIRED",
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N",
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"version": "3.1"
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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/mastodon/mastodon/security/advisories/GHSA-xqw8-4j56-5hj6",
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"tags": [
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"x_refsource_CONFIRM"
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],
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"url": "https://github.com/mastodon/mastodon/security/advisories/GHSA-xqw8-4j56-5hj6"
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}
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],
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"affected": [
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{
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"vendor": "mastodon",
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"product": "mastodon",
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"versions": [
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{
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"version": ">= 4.5.0, < 4.5.8",
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"status": "affected"
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},
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{
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"version": ">= 4.4.0, < 4.4.15",
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"status": "affected"
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},
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{
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"version": "< 4.3.21",
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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": "2026-03-27T19:50:07.687Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "Mastodon is a free, open-source social network server based on ActivityPub. Prior to versions 4.5.8, 4.4.15, and 4.3.21, an unauthenticated Open Redirect vulnerability (CWE-601) exists in the `/web/*` route due to improper handling of URL-encoded path segments. An attacker can craft a specially encoded URL that causes the application to redirect users to an arbitrary external domain, enabling phishing attacks and potential OAuth credential theft. The issue occurs because URL-encoded slashes (`%2F`) bypass Rails path normalization and are interpreted as host-relative redirects. Versions 4.5.8, 4.4.15, and 4.3.21 patch the issue."
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}
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],
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"source": {
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"advisory": "GHSA-xqw8-4j56-5hj6",
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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": "2026-03-31T18:50:44.597749Z",
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"id": "CVE-2026-33868",
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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": "no"
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},
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{
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"Technical Impact": "partial"
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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": "2026-03-31T18:54:24.919Z"
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}
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}
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]
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}
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} |