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Vulnerability Instance

Lookup for vulnerabilities affecting packages.

Vulnerability_idVCID-mt5t-ymhy-xuhp
Summary
h2 vulnerable to denial of service
Hyper is an HTTP library for Rust and h2 is an HTTP 2.0 client & server implementation for Rust. An issue was discovered in h2 v0.2.4 when processing header frames. It incorrectly processes the HTTP2 `RST_STREAM` frames by not always releasing the memory immediately upon receiving the reset frame, leading to stream stacking. As a result, the memory and CPU usage are high which can lead to a Denial of Service (DoS).

This issue affects users only when dealing with http2 connections.
Aliases
0
alias CVE-2023-26964
1
alias GHSA-f8vr-r385-rh5r
Fixed_packages
0
url pkg:cargo/h2@0.3.17
purl pkg:cargo/h2@0.3.17
is_vulnerable false
affected_by_vulnerabilities
resource_url http://public2.vulnerablecode.io/packages/pkg:cargo/h2@0.3.17
1
url pkg:deb/debian/rust-h2@0.3.13-2?distro=trixie
purl pkg:deb/debian/rust-h2@0.3.13-2?distro=trixie
is_vulnerable true
affected_by_vulnerabilities
0
vulnerability VCID-n66u-b73u-zucb
resource_url http://public2.vulnerablecode.io/packages/pkg:deb/debian/rust-h2@0.3.13-2%3Fdistro=trixie
2
url pkg:deb/debian/rust-h2@0.4.7-3?distro=trixie
purl pkg:deb/debian/rust-h2@0.4.7-3?distro=trixie
is_vulnerable false
affected_by_vulnerabilities
resource_url http://public2.vulnerablecode.io/packages/pkg:deb/debian/rust-h2@0.4.7-3%3Fdistro=trixie
3
url pkg:deb/debian/rust-h2@0.4.13-1?distro=trixie
purl pkg:deb/debian/rust-h2@0.4.13-1?distro=trixie
is_vulnerable false
affected_by_vulnerabilities
resource_url http://public2.vulnerablecode.io/packages/pkg:deb/debian/rust-h2@0.4.13-1%3Fdistro=trixie
Affected_packages
References
0
reference_url https://api.first.org/data/v1/epss?cve=CVE-2023-26964
reference_id
reference_type
scores
0
value 0.00256
scoring_system epss
scoring_elements 0.49008
published_at 2026-04-04T12:55:00Z
1
value 0.00256
scoring_system epss
scoring_elements 0.48982
published_at 2026-04-02T12:55:00Z
2
value 0.00256
scoring_system epss
scoring_elements 0.49012
published_at 2026-04-09T12:55:00Z
3
value 0.00256
scoring_system epss
scoring_elements 0.49016
published_at 2026-04-08T12:55:00Z
4
value 0.00256
scoring_system epss
scoring_elements 0.48962
published_at 2026-04-07T12:55:00Z
5
value 0.00256
scoring_system epss
scoring_elements 0.49029
published_at 2026-04-11T12:55:00Z
6
value 0.00283
scoring_system epss
scoring_elements 0.51792
published_at 2026-04-16T12:55:00Z
7
value 0.00283
scoring_system epss
scoring_elements 0.5178
published_at 2026-04-21T12:55:00Z
8
value 0.00283
scoring_system epss
scoring_elements 0.51799
published_at 2026-04-18T12:55:00Z
9
value 0.00283
scoring_system epss
scoring_elements 0.51768
published_at 2026-04-12T12:55:00Z
10
value 0.00283
scoring_system epss
scoring_elements 0.51751
published_at 2026-04-13T12:55:00Z
url https://api.first.org/data/v1/epss?cve=CVE-2023-26964
1
reference_url https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
reference_id
reference_type
scores
0
value 4.7
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H
url https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
2
reference_url https://github.com/hyperium/h2/issues/621
reference_id
reference_type
scores
0
value MODERATE
scoring_system generic_textual
scoring_elements
url https://github.com/hyperium/h2/issues/621
3
reference_url https://github.com/hyperium/h2/pull/668
reference_id
reference_type
scores
0
value MODERATE
scoring_system generic_textual
scoring_elements
url https://github.com/hyperium/h2/pull/668
4
reference_url https://github.com/hyperium/hyper
reference_id
reference_type
scores
0
value MODERATE
scoring_system generic_textual
scoring_elements
url https://github.com/hyperium/hyper
5
reference_url https://github.com/hyperium/hyper/issues/2877
reference_id
reference_type
scores
0
value 7.5
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
1
value MODERATE
scoring_system generic_textual
scoring_elements
2
value Track
scoring_system ssvc
scoring_elements SSVCv2/E:P/A:Y/T:P/P:M/B:A/M:M/D:T/2025-02-11T15:45:51Z/
url https://github.com/hyperium/hyper/issues/2877
6
reference_url https://nvd.nist.gov/vuln/detail/CVE-2023-26964
reference_id
reference_type
scores
0
value MODERATE
scoring_system generic_textual
scoring_elements
url https://nvd.nist.gov/vuln/detail/CVE-2023-26964
7
reference_url https://rustsec.org/advisories/RUSTSEC-2023-0034.html
reference_id
reference_type
scores
0
value MODERATE
scoring_system generic_textual
scoring_elements
url https://rustsec.org/advisories/RUSTSEC-2023-0034.html
8
reference_url https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1034723
reference_id 1034723
reference_type
scores
url https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1034723
9
reference_url https://github.com/advisories/GHSA-f8vr-r385-rh5r
reference_id GHSA-f8vr-r385-rh5r
reference_type
scores
0
value MODERATE
scoring_system cvssv3.1_qr
scoring_elements
url https://github.com/advisories/GHSA-f8vr-r385-rh5r
10
reference_url https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZHBAE7LQARMPUEEV4TWET4D7G6WCWBUD/
reference_id ZHBAE7LQARMPUEEV4TWET4D7G6WCWBUD
reference_type
scores
0
value 7.5
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
1
value Track
scoring_system ssvc
scoring_elements SSVCv2/E:P/A:Y/T:P/P:M/B:A/M:M/D:T/2025-02-11T15:45:51Z/
url https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZHBAE7LQARMPUEEV4TWET4D7G6WCWBUD/
11
reference_url https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZYRZ5Y2ALATKKPIITAFAJIS4TR4LUAHO/
reference_id ZYRZ5Y2ALATKKPIITAFAJIS4TR4LUAHO
reference_type
scores
0
value 7.5
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
1
value Track
scoring_system ssvc
scoring_elements SSVCv2/E:P/A:Y/T:P/P:M/B:A/M:M/D:T/2025-02-11T15:45:51Z/
url https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZYRZ5Y2ALATKKPIITAFAJIS4TR4LUAHO/
Weaknesses
0
cwe_id 770
name Allocation of Resources Without Limits or Throttling
description The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor.
Exploits
Severity_range_score4.0 - 7.5
Exploitabilitynull
Weighted_severitynull
Risk_scorenull
Resource_urlhttp://public2.vulnerablecode.io/vulnerabilities/VCID-mt5t-ymhy-xuhp