Protocol::HTTP2 versions before 1.13 for Perl is vulnerable to a HTTP/2 Bomb

{
  "id": "5561024ae000a5757211cd861534e480972a3607eab1df4706fe17327b45f207",
  "url": "https://osv.dev/vulnerability/CVE-2026-10725",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Protocol::HTTP2 versions before 1.13 for Perl is vulnerable to a HTTP/2 Bomb",
    "summary": "Protocol::HTTP2 versions before 1.13 for Perl is vulnerable to a HTTP/2 Bomb. Protocol::HTTP2's inbound HPACK path has no header-list size limit, so a small HTTP/2 request can expand into large server memory (the \"HTTP/2 bomb\"). The headers_decode method materialises a full key+value copy per indexed reference with no running size check, and the stream_header_block_add method appends (since version 1.12) every CONTINUATION frame to the per-stream buffer unbounded. MAX_HEADER_LIST_SIZE (default 65536) is advertised in SETTINGS but never consulted on decode. It is absent from the decoder and from the :limits export tag.",
    "evidence": "osv:CVE-2026-10725",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-10725",
      "aliases": [
        "CVE-2026-10725"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/vlet/p5-protocol-http2",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "0252ec2736b60aa95e9390679405a2ef197122e6"
                },
                {
                  "fixed": "822bf22224adbd662e8d0b865eeacb2b294d16cd"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:crux:protocol\\:\\:http2:*:*:*:*:*:perl:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "1.13"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "822bf22224adbd662e8d0b865eeacb2b294d16cd"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "1.12",
            "1.11",
            "1.10",
            "1.09",
            "1.08",
            "1.07",
            "1.06",
            "1.05",
            "1.04",
            "1.03",
            "1.02",
            "1.01",
            "1.00",
            "0.16",
            "0.15",
            "0.14",
            "0.13",
            "0.12",
            "0.11",
            "0.10",
            "0.09",
            "0.08",
            "0.07",
            "0.06",
            "0.05",
            "0.04",
            "0.03",
            "0.02",
            "0.01"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-10725.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:25.288040449Z",
      "provider": "osv",
      "references": [
        "https://cpan.org/modules",
        "https://metacpan.org/release/CRUX/Protocol-HTTP2-1.12/source/lib/Protocol/HTTP2/HeaderCompression.pm#L133",
        "https://metacpan.org/release/CRUX/Protocol-HTTP2-1.12/source/lib/Protocol/HTTP2/Stream.pm#L414",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/10xxx/CVE-2026-10725.json",
        "https://metacpan.org/release/CRUX/Protocol-HTTP2-1.13/changes",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-10725",
        "https://github.com/vlet/p5-Protocol-HTTP2/commit/822bf22224adbd662e8d0b865eeacb2b294d16cd.patch",
        "https://security.metacpan.org/patches/P/Protocol-HTTP2/1.12/CVE-2026-10725-r2.patch",
        "https://github.com/vlet/p5-Protocol-HTTP2"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-409"
        ],
        "cna_assigner": "CPANSec",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/10xxx/CVE-2026-10725.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-10725",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 491839,
  "published_at": "2026-06-06T09:14:45.652+00:00"
}