CVE Explorer
CVE-2026-10725
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 (defaul
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"collectionURL":"https://cpan.org/modules","defaultStatus":"unaffected","packageName":"Protocol-HTTP2","product":"Protocol::HTTP2","programRoutines":[{"name":"Protocol::HTTP2::HeaderCompression::headers_decode"},{"name":"Protocol::HTTP2::Stream::stream_header_block_add"}],"repo":"https://github.com/vlet/p5-Protocol-HTTP2","vendor":"CRUX","versions":[{"lessThan":"1.13","status":"affected","version":"0","versionType":"custom"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:f376558c4678bd898d8e030f9b15a88f02bc5011ea96954ee73377944d308627 · sha256:bc5ce2698a7c1426… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:f376558c4678bd898d8e030f9b15a88f02bc5011ea96954ee73377944d308627 · sha256:bc5ce2698a7c1426… · /containers/adp/1/metrics/0/cvssV3_1
CWE assertions
1 source assertion{"cweId":"CWE-409","description":"CWE-409 Improper Handling of Highly Compressed Data (Data Amplification)","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:f376558c4678bd898d8e030f9b15a88f02bc5011ea96954ee73377944d308627 · sha256:bc5ce2698a7c1426… · /containers/cna/problemTypes/0/descriptions/0
Source references
6 source assertions{"url":"http://www.openwall.com/lists/oss-security/2026/06/06/7"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:f376558c4678bd898d8e030f9b15a88f02bc5011ea96954ee73377944d308627 · sha256:bc5ce2698a7c1426… · /containers/adp/0/references/0
{"tags":["patch"],"url":"https://github.com/vlet/p5-Protocol-HTTP2/commit/822bf22224adbd662e8d0b865eeacb2b294d16cd.patch"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:f376558c4678bd898d8e030f9b15a88f02bc5011ea96954ee73377944d308627 · sha256:bc5ce2698a7c1426… · /containers/cna/references/3
{"url":"https://metacpan.org/release/CRUX/Protocol-HTTP2-1.12/source/lib/Protocol/HTTP2/HeaderCompression.pm#L133"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:f376558c4678bd898d8e030f9b15a88f02bc5011ea96954ee73377944d308627 · sha256:bc5ce2698a7c1426… · /containers/cna/references/1
{"url":"https://metacpan.org/release/CRUX/Protocol-HTTP2-1.12/source/lib/Protocol/HTTP2/Stream.pm#L414"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:f376558c4678bd898d8e030f9b15a88f02bc5011ea96954ee73377944d308627 · sha256:bc5ce2698a7c1426… · /containers/cna/references/2
{"tags":["release-notes"],"url":"https://metacpan.org/release/CRUX/Protocol-HTTP2-1.13/changes"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:f376558c4678bd898d8e030f9b15a88f02bc5011ea96954ee73377944d308627 · sha256:bc5ce2698a7c1426… · /containers/cna/references/0
{"tags":["patch"],"url":"https://security.metacpan.org/patches/P/Protocol-HTTP2/1.12/CVE-2026-10725-r2.patch"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:f376558c4678bd898d8e030f9b15a88f02bc5011ea96954ee73377944d308627 · sha256:bc5ce2698a7c1426… · /containers/cna/references/4
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.