221 lines
11 KiB
JSON
221 lines
11 KiB
JSON
{
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"containers": {
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"cna": {
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"affected": [
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{
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"product": "matrix-appservice-bridge",
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"vendor": "matrix-org",
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"versions": [
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{
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"status": "affected",
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"version": "< 2.6.1"
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}
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]
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}
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],
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"descriptions": [
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{
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"lang": "en",
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"value": "Matrix-appservice-bridge is the bridging service for the Matrix communication program's application services. In versions 2.6.0 and earlier, if a bridge has room upgrade handling turned on in the configuration (the `roomUpgradeOpts` key when instantiating a new `Bridge` instance.), any `m.room.tombstone` event it encounters will be used to unbridge the current room and bridge into the target room. However, the target room `m.room.create` event is not checked to verify if the `predecessor` field contains the previous room. This means that any malicious admin of a bridged room can repoint the traffic to a different room without the new room being aware. Versions 2.6.1 and greater are patched. As a workaround, disabling the automatic room upgrade handling can be done by removing the `roomUpgradeOpts` key from the `Bridge` class options."
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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": 6.5,
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"baseSeverity": "MEDIUM",
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"confidentialityImpact": "HIGH",
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"integrityImpact": "NONE",
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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:H/I:N/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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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-306",
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"description": "CWE-306: Missing Authentication for Critical Function",
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"lang": "en",
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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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"providerMetadata": {
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"dateUpdated": "2021-06-16T18:45:11.000Z",
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"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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"shortName": "GitHub_M"
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},
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"references": [
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{
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"tags": [
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"x_refsource_CONFIRM"
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],
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"url": "https://github.com/matrix-org/matrix-appservice-bridge/security/advisories/GHSA-35g4-qx3c-vjhx"
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},
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{
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/matrix-org/matrix-appservice-bridge/commit/b69e745584a34fcfd858df33e4631e420da07b9f"
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},
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{
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/matrix-org/matrix-appservice-bridge/releases/tag/2.6.1"
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}
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],
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"source": {
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"advisory": "GHSA-35g4-qx3c-vjhx",
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"discovery": "UNKNOWN"
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},
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"title": "Automatic room upgrade handling can be used maliciously to bridge a room non-consentually",
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"x_legacyV4Record": {
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"CVE_data_meta": {
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"ASSIGNER": "security-advisories@github.com",
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"ID": "CVE-2021-32659",
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"STATE": "PUBLIC",
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"TITLE": "Automatic room upgrade handling can be used maliciously to bridge a room non-consentually"
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},
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"affects": {
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"vendor": {
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"vendor_data": [
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{
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"product": {
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"product_data": [
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{
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"product_name": "matrix-appservice-bridge",
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"version": {
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"version_data": [
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{
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"version_value": "< 2.6.1"
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}
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]
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}
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}
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]
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},
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"vendor_name": "matrix-org"
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}
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]
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}
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},
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"data_format": "MITRE",
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"data_type": "CVE",
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"data_version": "4.0",
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"description": {
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"description_data": [
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{
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"lang": "eng",
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"value": "Matrix-appservice-bridge is the bridging service for the Matrix communication program's application services. In versions 2.6.0 and earlier, if a bridge has room upgrade handling turned on in the configuration (the `roomUpgradeOpts` key when instantiating a new `Bridge` instance.), any `m.room.tombstone` event it encounters will be used to unbridge the current room and bridge into the target room. However, the target room `m.room.create` event is not checked to verify if the `predecessor` field contains the previous room. This means that any malicious admin of a bridged room can repoint the traffic to a different room without the new room being aware. Versions 2.6.1 and greater are patched. As a workaround, disabling the automatic room upgrade handling can be done by removing the `roomUpgradeOpts` key from the `Bridge` class options."
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}
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]
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},
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"impact": {
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"cvss": {
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"attackComplexity": "LOW",
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"attackVector": "NETWORK",
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"availabilityImpact": "NONE",
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"baseScore": 6.5,
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"baseSeverity": "MEDIUM",
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"confidentialityImpact": "HIGH",
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"integrityImpact": "NONE",
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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:H/I:N/A:N",
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"version": "3.1"
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}
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},
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"problemtype": {
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"problemtype_data": [
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{
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"description": [
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{
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"lang": "eng",
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"value": "CWE-306: Missing Authentication for Critical Function"
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}
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]
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}
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]
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},
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"references": {
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"reference_data": [
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{
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"name": "https://github.com/matrix-org/matrix-appservice-bridge/security/advisories/GHSA-35g4-qx3c-vjhx",
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"refsource": "CONFIRM",
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"url": "https://github.com/matrix-org/matrix-appservice-bridge/security/advisories/GHSA-35g4-qx3c-vjhx"
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},
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{
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"name": "https://github.com/matrix-org/matrix-appservice-bridge/commit/b69e745584a34fcfd858df33e4631e420da07b9f",
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"refsource": "MISC",
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"url": "https://github.com/matrix-org/matrix-appservice-bridge/commit/b69e745584a34fcfd858df33e4631e420da07b9f"
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},
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{
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"name": "https://github.com/matrix-org/matrix-appservice-bridge/releases/tag/2.6.1",
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"refsource": "MISC",
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"url": "https://github.com/matrix-org/matrix-appservice-bridge/releases/tag/2.6.1"
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}
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]
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},
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"source": {
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"advisory": "GHSA-35g4-qx3c-vjhx",
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"discovery": "UNKNOWN"
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}
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}
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},
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"adp": [
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{
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"providerMetadata": {
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"orgId": "af854a3a-2127-422b-91ae-364da2661108",
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"shortName": "CVE",
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"dateUpdated": "2024-08-03T23:25:31.074Z"
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},
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"title": "CVE Program Container",
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"references": [
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{
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"tags": [
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"x_refsource_CONFIRM",
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"x_transferred"
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],
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"url": "https://github.com/matrix-org/matrix-appservice-bridge/security/advisories/GHSA-35g4-qx3c-vjhx"
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},
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{
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"tags": [
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"x_refsource_MISC",
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"x_transferred"
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],
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"url": "https://github.com/matrix-org/matrix-appservice-bridge/commit/b69e745584a34fcfd858df33e4631e420da07b9f"
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},
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{
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"tags": [
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"x_refsource_MISC",
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"x_transferred"
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],
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"url": "https://github.com/matrix-org/matrix-appservice-bridge/releases/tag/2.6.1"
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}
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]
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}
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]
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},
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"cveMetadata": {
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"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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"assignerShortName": "GitHub_M",
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"cveId": "CVE-2021-32659",
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"datePublished": "2021-06-16T18:45:11.000Z",
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"dateReserved": "2021-05-12T00:00:00.000Z",
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"dateUpdated": "2024-08-03T23:25:31.074Z",
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"state": "PUBLISHED"
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},
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"dataType": "CVE_RECORD",
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"dataVersion": "5.1"
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} |