133 lines
5.4 KiB
JSON
133 lines
5.4 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-2026-42180",
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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": "2026-04-25T01:53:21.582Z",
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"datePublished": "2026-05-08T19:29:04.132Z",
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"dateUpdated": "2026-05-13T17:18:23.284Z"
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},
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"containers": {
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"cna": {
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"title": "Lemmy: SSRF in /api/v3/post via Webmention dispatch",
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-918",
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"lang": "en",
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"description": "CWE-918: Server-Side Request Forgery (SSRF)",
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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": "LOW",
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"baseScore": 6.3,
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"baseSeverity": "MEDIUM",
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"confidentialityImpact": "LOW",
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"integrityImpact": "LOW",
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"privilegesRequired": "LOW",
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"scope": "UNCHANGED",
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"userInteraction": "NONE",
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L",
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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/LemmyNet/lemmy/security/advisories/GHSA-3jvj-v6w2-h948",
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"tags": [
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"x_refsource_CONFIRM"
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],
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"url": "https://github.com/LemmyNet/lemmy/security/advisories/GHSA-3jvj-v6w2-h948"
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},
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{
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"name": "https://github.com/LemmyNet/lemmy/releases/tag/0.19.18",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/LemmyNet/lemmy/releases/tag/0.19.18"
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}
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],
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"affected": [
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{
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"vendor": "LemmyNet",
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"product": "lemmy",
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"versions": [
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{
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"version": "< 0.19.18",
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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": "2026-05-08T19:29:04.132Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "Lemmy is a link aggregator and forum for the fediverse. Prior to version 0.19.18, Lemmy allows an authenticated low-privileged user to create a link post through POST /api/v3/post. When a post is created in a public community, the backend asynchronously sends a Webmention to the attacker-controlled link target. The submitted URL is checked for syntax and scheme, but the audited code path does not reject loopback, private, or link-local destinations before the Webmention request is issued. This lets a normal user trigger server-side HTTP requests toward internal services. This issue has been patched in version 0.19.18."
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}
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],
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"source": {
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"advisory": "GHSA-3jvj-v6w2-h948",
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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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"references": [
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{
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"url": "https://github.com/LemmyNet/lemmy/security/advisories/GHSA-3jvj-v6w2-h948",
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"tags": [
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"exploit"
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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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"other": {
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"type": "ssvc",
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"content": {
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"timestamp": "2026-05-13T17:17:59.971593Z",
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"id": "CVE-2026-42180",
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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": "2026-05-13T17:18:23.284Z"
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}
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}
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]
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}
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} |