143 lines
6.5 KiB
JSON
143 lines
6.5 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-2026-73495",
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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": "2026-08-12T19:00:33.735Z",
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"datePublished": "2026-08-12T21:11:55.180Z",
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"dateUpdated": "2026-08-13T13:04:05.574Z"
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},
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"containers": {
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"cna": {
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"title": "blaze: Chunked-body trailer fields promoted into Request.headers in blaze-server (front-end header-sanitization 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-444",
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"lang": "en",
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"description": "CWE-444: Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')",
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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": "HIGH",
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"attackVector": "NETWORK",
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"availabilityImpact": "NONE",
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"baseScore": 7.4,
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"baseSeverity": "HIGH",
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"confidentialityImpact": "HIGH",
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"integrityImpact": "HIGH",
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"privilegesRequired": "NONE",
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"scope": "UNCHANGED",
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"userInteraction": "NONE",
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"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/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/http4s/blaze/security/advisories/GHSA-46q4-43ph-c6fr",
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"tags": [
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"x_refsource_CONFIRM"
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],
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"url": "https://github.com/http4s/blaze/security/advisories/GHSA-46q4-43ph-c6fr"
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},
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{
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"name": "https://github.com/http4s/blaze/commit/ef3e666c146cfc16cb6603f1fc3c464daab4a24f",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/http4s/blaze/commit/ef3e666c146cfc16cb6603f1fc3c464daab4a24f"
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},
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{
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"name": "https://github.com/http4s/blaze/releases/tag/v0.23.18",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/http4s/blaze/releases/tag/v0.23.18"
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},
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{
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"name": "https://github.com/http4s/blaze/releases/tag/v1.0.0-M42",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/http4s/blaze/releases/tag/v1.0.0-M42"
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}
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],
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"affected": [
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{
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"vendor": "http4s",
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"product": "blaze",
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"versions": [
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{
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"version": "< 0.23.18",
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"status": "affected"
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},
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{
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"version": ">= 1.0.0-M1, < 1.0.0-M42",
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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": "2026-08-12T21:11:55.180Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "blaze is a Scala library for building asynchronous pipelines, with a focus on network IO. Prior to 0.23.18 and 1.0.0-M42, blaze-server can merge HTTP/1.1 chunked-body trailer fields into Request.headers. Because trailer fields are attacker-controlled, an unauthenticated remote client can inject arbitrary header names and values, including X-Forwarded-For and internal authorization headers, that a fronting proxy sanitized from the request-header section, bypassing header-based trust decisions in the application. Any http4s application using BlazeServerBuilder over HTTP/1.1 whose routes or middleware trust proxy-set headers, including X-Forwarded-For, X-Real-IP, and X-Forwarded-Host, is affected. If a fronting proxy strips or normalizes those headers but forwards chunked bodies with trailers intact, an attacker can spoof client IP for allow-lists, rate limits, or auditing, forge the https scheme, or inject internal authorization headers. A promoted Connection: close trailer is also honored, allowing attacker-controlled termination of pooled backend connections. This issue is fixed in versions 0.23.18 and 1.0.0-M42."
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}
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],
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"source": {
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"advisory": "GHSA-46q4-43ph-c6fr",
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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": "2026-08-13T13:02:55.958244Z",
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"id": "CVE-2026-73495",
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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": "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": "2026-08-13T13:04:05.574Z"
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}
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}
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]
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}
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} |