145 lines
6.1 KiB
JSON
145 lines
6.1 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-2026-30852",
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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": "2026-03-05T21:27:35.341Z",
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"datePublished": "2026-03-07T16:28:26.894Z",
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"dateUpdated": "2026-03-09T18:24:55.495Z"
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},
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"containers": {
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"cna": {
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"title": "Caddy: vars_regexp double-expands user input, leaking env vars and files",
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-200",
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"lang": "en",
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"description": "CWE-200: Exposure of Sensitive Information to an Unauthorized Actor",
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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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"descriptions": [
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{
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"cweId": "CWE-74",
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"lang": "en",
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"description": "CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')",
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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": "NONE",
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"privilegesRequired": "NONE",
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"userInteraction": "NONE",
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"vulnConfidentialityImpact": "LOW",
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"vulnIntegrityImpact": "NONE",
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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": 5.5,
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"baseSeverity": "MEDIUM",
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"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P",
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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/caddyserver/caddy/security/advisories/GHSA-m2w3-8f23-hxxf",
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"tags": [
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"x_refsource_CONFIRM"
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],
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"url": "https://github.com/caddyserver/caddy/security/advisories/GHSA-m2w3-8f23-hxxf"
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},
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{
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"name": "https://github.com/caddyserver/caddy/pull/5408",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/caddyserver/caddy/pull/5408"
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},
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{
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"name": "https://github.com/caddyserver/caddy/releases/tag/v2.11.2",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/caddyserver/caddy/releases/tag/v2.11.2"
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}
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],
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"affected": [
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{
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"vendor": "caddyserver",
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"product": "caddy",
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"versions": [
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{
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"version": ">= 2.7.5, < 2.11.2",
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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": "2026-03-07T16:28:26.894Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "Caddy is an extensible server platform that uses TLS by default. From version 2.7.5 to before version 2.11.2, the vars_regexp matcher in vars.go:337 double-expands user-controlled input through the Caddy replacer. When vars_regexp matches against a placeholder like {http.request.header.X-Input}, the header value gets resolved once (expected), then passed through repl.ReplaceAll() again (the bug). This means an attacker can put {env.DATABASE_URL} or {file./etc/passwd} in a request header and the server will evaluate it, leaking environment variables, file contents, and system info. This issue has been patched in version 2.11.2."
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}
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],
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"source": {
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"advisory": "GHSA-m2w3-8f23-hxxf",
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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": "2026-03-09T18:19:34.437219Z",
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"id": "CVE-2026-30852",
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"options": [
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{
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"Exploitation": "poc"
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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": "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": "2026-03-09T18:24:55.495Z"
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}
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}
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]
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}
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} |