Package: h2o (2.2.5+dfsg2-7)

optimized HTTP/1.x, HTTP/2 server

Other Packages Related to h2o:

  • dep: [adduser]

    add and remove users and groups

  • dep: [apache2-utils]

    Apache HTTP Server (utility programs for web servers)

  • dep: [libc6] (>= 2.35)

    GNU C Library: Shared libraries

  • dep: [libgcc-s1] (>= 3.0)

    GCC support library

  • dep: [libssl3] (>= 3.0.0)

    Secure Sockets Layer toolkit - shared libraries

  • dep: [libstdc++6] (>= 11)

    GNU Standard C++ Library v3

  • dep: [libyaml-0-2]

    Fast YAML 1.1 parser and emitter library

  • dep: [zlib1g] (>= 1:1.1.4)

    compression library - runtime

Download h2o

ArchitecturePackage sizeInstalled sizeFilesPackage
amd64901 KiB2.8 MiBlist of filesDownload
arm64839 KiB2.7 MiBlist of filesDownload

Package file paths (24)

Paths come from the repository package-file index for the observed builds. They describe archive/package associations, not every file that will exist on a running system after maintainer scripts, alternatives, generated state, diversions, or installation choices.

  • /etc/h2o/h2o.conf
  • /etc/init.d/h2o
  • /lib/systemd/system/h2o.service
  • /usr/bin/h2o
  • /usr/share/doc/h2o/changelog.Debian.gz
  • /usr/share/doc/h2o/changelog.gz
  • /usr/share/doc/h2o/copyright
  • /usr/share/doc/h2o/TODO.Debian
  • /usr/share/h2o/annotate-backtrace-symbols
  • /usr/share/h2o/compress_logs
  • /usr/share/h2o/fastcgi-cgi
  • /usr/share/h2o/fetch-ocsp-response
  • /usr/share/h2o/kill-on-close
  • /usr/share/h2o/mruby/acl.rb
  • /usr/share/h2o/mruby/bootstrap.rb
  • /usr/share/h2o/mruby/dos_detector.rb
  • /usr/share/h2o/mruby/htpasswd.rb
  • /usr/share/h2o/mruby/lru_cache.rb
  • /usr/share/h2o/mruby/preloads.rb
  • /usr/share/h2o/mruby/trie_addr.rb
  • /usr/share/h2o/setuidgid
  • /usr/share/h2o/start_server
  • /usr/share/h2o/status/index.html
  • /usr/share/man/man8/h2o.8.gz

Field source: Debian 12 (Bookworm) main amd64

Use this package

OpenFactory can boot this operating system in a browser VM, or start a build that includes the native package name from this record.

Versions, suites, and repositories

Each row is recorded package-index metadata for one version, architecture, suite, and repository. Names, URLs, and sizes are source-reported; a link is a potentially mutable retrieval location, not an OpenFactory redistribution claim or proof that OpenFactory retained the artifact bytes.

VersionReleaseArchitectureRepositoryPackage sizeInstalled sizePublisher repository artifact
2.2.5+dfsg2-7bookworm / mainamd64Debian 12 · main · amd64901 KiB2.8 MiBpool/main/h/h2o/h2o_2.2.5+dfsg2-7_amd64.deb
2.2.5+dfsg2-7bookworm / mainarm64Debian 12 · main · arm64839 KiB2.7 MiBpool/main/h/h2o/h2o_2.2.5+dfsg2-7_arm64.deb

Field source: Debian 12 (Bookworm) main amd64

Known vulnerabilities

Matching against OpenFactory catalog package versions is in progress.

CVESeverityVersion impact
[CVE-2026-54340]

Published:

h2o is an HTTP server with support for HTTP/1.x, HTTP/2 and HTTP/3. Prior to commit 9265bdd, there is an HTTP/2 state amplification issue that combines HPACK decompression amplification with Slowloris

High(7.5)Affected
Details (2)
  • 2.2.5+dfsg2-7 · amd64 · bookworm

    Affected

    nvd · h2o · debian · bookworm; nvd · h2o · debian · 12

  • 2.2.5+dfsg2-7 · arm64 · bookworm

    Affected

    nvd · h2o · debian · bookworm; nvd · h2o · debian · 12

[CVE-2026-44452]

Published:

h2o is an HTTP server with support for HTTP/1.x, HTTP/2 and HTTP/3. Prior to commit 8dc37cb, when h2o receives a ClientHello message over TLS or QUIC and it contains a zero-length SNI extension, the h

Medium(5.9)Affected
Details (2)
  • 2.2.5+dfsg2-7 · amd64 · bookworm

    Affected

    nvd · h2o · debian · bookworm; nvd · h2o · debian · 12

  • 2.2.5+dfsg2-7 · arm64 · bookworm

    Affected

    nvd · h2o · debian · bookworm; nvd · h2o · debian · 12

[CVE-2026-44453]

Published:

h2o is an HTTP server with support for HTTP/1.x, HTTP/2 and HTTP/3. Prior to commit 6b5370d, h2o is vulnerable to a Denial of Service attack when calling alloca under certain conditions. When serving

High(7.5)Affected
Details (2)
  • 2.2.5+dfsg2-7 · amd64 · bookworm

    Affected

    nvd · h2o · debian · bookworm; nvd · h2o · debian · 12

  • 2.2.5+dfsg2-7 · arm64 · bookworm

    Affected

    nvd · h2o · debian · bookworm; nvd · h2o · debian · 12

[CVE-2026-55213]

Published:

h2o is an HTTP server with support for HTTP/1.x, HTTP/2 and HTTP/3. Prior to commit edd7a120bfc4af11ac0cbebce2a43cc1f93f9af1, when h2o processes a QPACK instruction sent from the peer over HTTP/3, lib

High(7.5)Affected
Details (2)
  • 2.2.5+dfsg2-7 · amd64 · bookworm

    Affected

    nvd · h2o · debian · bookworm; nvd · h2o · debian · 12

  • 2.2.5+dfsg2-7 · arm64 · bookworm

    Affected

    nvd · h2o · debian · bookworm; nvd · h2o · debian · 12

[CVE-2025-8671]

Published:

DNSdist vulnerabilities

High(7.5)Affected
Details (2)
  • 2.2.5+dfsg2-7 · amd64 · bookworm

    Affected

    usn · h2o · debian · bookworm; usn · h2o · debian · 12

  • 2.2.5+dfsg2-7 · arm64 · bookworm

    Affected

    usn · h2o · debian · bookworm; usn · h2o · debian · 12

[CVE-2024-25622]

Published:

h2o: CVE-2024-25622

MediumAffected
Details (2)
  • 2.2.5+dfsg2-7 · amd64 · bookworm

    Affected

    dsa · h2o · debian · bookworm; dsa · h2o · debian · 12

  • 2.2.5+dfsg2-7 · arm64 · bookworm

    Affected

    dsa · h2o · debian · bookworm; dsa · h2o · debian · 12

[CVE-2024-45397]

Published:

h2o: CVE-2024-45397

MediumAffected
Details (2)
  • 2.2.5+dfsg2-7 · amd64 · bookworm

    Affected

    dsa · h2o · debian · bookworm; dsa · h2o · debian · 12

  • 2.2.5+dfsg2-7 · arm64 · bookworm

    Affected

    dsa · h2o · debian · bookworm; dsa · h2o · debian · 12

[CVE-2019-9514]

Published:

rust-h2: CVE-2019-9514

High(7.5)Unknown

Matching against OpenFactory catalog package versions is in progress. Observed:

Details (2)
  • 2.2.5+dfsg2-7 · amd64 · bookworm

    Fixed · Fixed: 2.2.5+dfsg2-3

    dsa · h2o · debian · bookworm; dsa · h2o · debian · 12

  • 2.2.5+dfsg2-7 · arm64 · bookworm

    Fixed · Fixed: 2.2.5+dfsg2-3

    dsa · h2o · debian · bookworm; dsa · h2o · debian · 12

[CVE-2019-9515]

Published:

h2o: CVE-2019-9515

High(7.5)Unknown

Matching against OpenFactory catalog package versions is in progress. Observed:

Details (2)
  • 2.2.5+dfsg2-7 · amd64 · bookworm

    Fixed · Fixed: 2.2.5+dfsg2-3

    dsa · h2o · debian · bookworm; dsa · h2o · debian · 12

  • 2.2.5+dfsg2-7 · arm64 · bookworm

    Fixed · Fixed: 2.2.5+dfsg2-3

    dsa · h2o · debian · bookworm; dsa · h2o · debian · 12

[CVE-2019-9512]

Published:

h2o: CVE-2019-9512

High(7.5)Unknown

Matching against OpenFactory catalog package versions is in progress. Observed:

Details (2)
  • 2.2.5+dfsg2-7 · amd64 · bookworm

    Fixed · Fixed: 2.2.5+dfsg2-3

    dsa · h2o · debian · bookworm; dsa · h2o · debian · 12

  • 2.2.5+dfsg2-7 · arm64 · bookworm

    Fixed · Fixed: 2.2.5+dfsg2-3

    dsa · h2o · debian · bookworm; dsa · h2o · debian · 12

Fixed and unaffected versions (10)
CVESeverityVersion impact
[CVE-2024-45403]

Published:

h2o: CVE-2024-45403

LowNot affected
Details (2)
  • 2.2.5+dfsg2-7 · amd64 · bookworm

    Not affected

    dsa · h2o · debian · bookworm

  • 2.2.5+dfsg2-7 · arm64 · bookworm

    Not affected

    dsa · h2o · debian · bookworm

[CVE-2021-43848]

Published:

h2o: CVE-2021-43848

LowNot affected
Details (2)
  • 2.2.5+dfsg2-7 · amd64 · bookworm

    Not affected

    dsa · h2o · debian · bookworm

  • 2.2.5+dfsg2-7 · arm64 · bookworm

    Not affected

    dsa · h2o · debian · bookworm

[CVE-2018-0608]

Published:

h2o: CVE-2018-0608

MediumFixed
Details (2)
  • 2.2.5+dfsg2-7 · amd64 · bookworm

    Fixed · Fixed: 2.2.5+dfsg1-1

    dsa · h2o · debian · bookworm; dsa · h2o · debian · 12

  • 2.2.5+dfsg2-7 · arm64 · bookworm

    Fixed · Fixed: 2.2.5+dfsg1-1

    dsa · h2o · debian · bookworm; dsa · h2o · debian · 12

[CVE-2017-10869]

Published:

h2o: CVE-2017-10869

HighFixed
Details (2)
  • 2.2.5+dfsg2-7 · amd64 · bookworm

    Fixed · Fixed: 2.2.3+dfsg-1

    dsa · h2o · debian · bookworm; dsa · h2o · debian · 12

  • 2.2.5+dfsg2-7 · arm64 · bookworm

    Fixed · Fixed: 2.2.3+dfsg-1

    dsa · h2o · debian · bookworm; dsa · h2o · debian · 12

[CVE-2017-10868]

Published:

h2o: CVE-2017-10868

HighFixed
Details (2)
  • 2.2.5+dfsg2-7 · amd64 · bookworm

    Fixed · Fixed: 2.2.3+dfsg-1

    dsa · h2o · debian · bookworm; dsa · h2o · debian · 12

  • 2.2.5+dfsg2-7 · arm64 · bookworm

    Fixed · Fixed: 2.2.3+dfsg-1

    dsa · h2o · debian · bookworm; dsa · h2o · debian · 12

[CVE-2017-10872]

Published:

h2o: CVE-2017-10872

HighFixed
Details (2)
  • 2.2.5+dfsg2-7 · amd64 · bookworm

    Fixed · Fixed: 2.2.4+dfsg-1

    dsa · h2o · debian · bookworm; dsa · h2o · debian · 12

  • 2.2.5+dfsg2-7 · arm64 · bookworm

    Fixed · Fixed: 2.2.4+dfsg-1

    dsa · h2o · debian · bookworm; dsa · h2o · debian · 12

[CVE-2017-10908]

Published:

h2o: CVE-2017-10908

HighFixed
Details (2)
  • 2.2.5+dfsg2-7 · amd64 · bookworm

    Fixed · Fixed: 2.2.4+dfsg-1

    dsa · h2o · debian · bookworm; dsa · h2o · debian · 12

  • 2.2.5+dfsg2-7 · arm64 · bookworm

    Fixed · Fixed: 2.2.4+dfsg-1

    dsa · h2o · debian · bookworm; dsa · h2o · debian · 12

[CVE-2015-5638]

Published: Not reported

h2o: CVE-2015-5638

LowNot affected
Details (2)
  • 2.2.5+dfsg2-7 · amd64 · bookworm

    Not affected

    dsa · h2o · debian · bookworm

  • 2.2.5+dfsg2-7 · arm64 · bookworm

    Not affected

    dsa · h2o · debian · bookworm

[CVE-2016-1133]

Published: Not reported

h2o: CVE-2016-1133

LowNot affected
Details (2)
  • 2.2.5+dfsg2-7 · amd64 · bookworm

    Not affected

    dsa · h2o · debian · bookworm

  • 2.2.5+dfsg2-7 · arm64 · bookworm

    Not affected

    dsa · h2o · debian · bookworm

[CVE-2016-4817]

Published: Not reported

h2o: CVE-2016-4817

LowNot affected
Details (2)
  • 2.2.5+dfsg2-7 · amd64 · bookworm

    Not affected

    dsa · h2o · debian · bookworm

  • 2.2.5+dfsg2-7 · arm64 · bookworm

    Not affected

    dsa · h2o · debian · bookworm

[Next results]

Last synced:

[CVE catalog]

Checksums

Repository signatures authenticate metadata. Artifact hashing is recorded separately. Neither establishes package safety.

2.2.5+dfsg2-7 / amd64Observed Sep 1, 2026sha256 35399a7d40b5…846b66d6Source-reported digest

Metadata observed; artifact bytes were not independently fetched or hashed by this catalog import. The digest below is source-reported.

Source-reported digest (sha256): 35399a7d40b56c3d01f1b4b889aa9c796f86becf10f5e6a381c4f77f846b66d6

Verify download

printf '%s %s\n' '35399a7d40b56c3d01f1b4b889aa9c796f86becf10f5e6a381c4f77f846b66d6' 'h2o_2.2.5+dfsg2-7_amd64.deb' | sha256sum --check --strict -

Field source: Debian 12 (Bookworm) main amd64

2.2.5+dfsg2-7 / arm64Observed Sep 1, 2026sha256 96098ad1888c…74cd6269Source-reported digest

Metadata observed; artifact bytes were not independently fetched or hashed by this catalog import. The digest below is source-reported.

Source-reported digest (sha256): 96098ad1888c5dd5e5a6ba6bcf1529ceebd90187cd51bb1d3a377f9d74cd6269

Verify download

printf '%s %s\n' '96098ad1888c5dd5e5a6ba6bcf1529ceebd90187cd51bb1d3a377f9d74cd6269' 'h2o_2.2.5+dfsg2-7_arm64.deb' | sha256sum --check --strict -

Field source: Debian 12 (Bookworm) main arm64

Sources

  • Authoritative source; repository metadata signature verified

    Signature evidence

    bookworm-main-amd64:9e0b5aabb2465b3d2e7a7fe27f9913846277833f7a2826e7767acccff5b588c5

    Repository-signature verification record
    Signed-object SHA-256
    77737fa4b34f2693e982cc9ee35736816c35a7778fc2d326cc1bbf5b301fe1aa
    Signer fingerprint
    4CB50190207B4758A3F73A796ED0E7B82643E131
    Keyring revision
    debian-archive-keyring.gpg
    SHA-256 506b815cbb32d9b6066b4a2aa524071e071761e7e7f68c3ac74f3061ba852017
    Tool and policy
    gpgv (GnuPG) 2.4.9
    openfactory-software-catalog-signature-v1
    Verification time
    Sep 1, 2026
    Repository metadata hash linkage
    Path
    main/binary-amd64/Packages.xz
    Expected SHA-256
    9e0b5aabb2465b3d2e7a7fe27f9913846277833f7a2826e7767acccff5b588c5
    Observed SHA-256
    9e0b5aabb2465b3d2e7a7fe27f9913846277833f7a2826e7767acccff5b588c5
    Result
    match verified
  • Authoritative source; repository metadata signature verified

    Signature evidence

    bookworm-main-arm64:2ddb1737692e8c45c53e8d57c0ce4cd21c78c5703b830c3226b1423566a06c00

    Repository-signature verification record
    Signed-object SHA-256
    77737fa4b34f2693e982cc9ee35736816c35a7778fc2d326cc1bbf5b301fe1aa
    Signer fingerprint
    4CB50190207B4758A3F73A796ED0E7B82643E131
    Keyring revision
    debian-archive-keyring.gpg
    SHA-256 506b815cbb32d9b6066b4a2aa524071e071761e7e7f68c3ac74f3061ba852017
    Tool and policy
    gpgv (GnuPG) 2.4.9
    openfactory-software-catalog-signature-v1
    Verification time
    Sep 1, 2026
    Repository metadata hash linkage
    Path
    main/binary-arm64/Packages.xz
    Expected SHA-256
    2ddb1737692e8c45c53e8d57c0ce4cd21c78c5703b830c3226b1423566a06c00
    Observed SHA-256
    2ddb1737692e8c45c53e8d57c0ce4cd21c78c5703b830c3226b1423566a06c00
    Result
    match verified