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Vulnerability Instance

Lookup for vulnerabilities affecting packages.

Vulnerability_idVCID-h1k4-x8vr-5bch
SummaryImproper Handling of Highly Compressed Data (Compression Bomb) vulnerability in Erlang OTP ssh (ssh_transport modules) allows Denial of Service via Resource Depletion. The SSH transport layer advertises legacy zlib compression by default and inflates attacker-controlled payloads pre-authentication without any size limit, enabling reliable memory exhaustion DoS. Two compression algorithms are affected: * zlib: Activates immediately after key exchange, enabling unauthenticated attacks * zlib@openssh.com: Activates post-authentication, enabling authenticated attacks Each SSH packet can decompress ~255 MB from 256 KB of wire data (1029:1 amplification ratio). Multiple packets can rapidly exhaust available memory, causing OOM kills in memory-constrained environments. This vulnerability is associated with program files lib/ssh/src/ssh_transport.erl and program routines ssh_transport:decompress/2, ssh_transport:handle_packet_part/4. This issue affects OTP from OTP 17.0 until OTP 28.4.1, 27.3.4.9 and 26.2.5.18 corresponding to ssh from 3.0.1 until 5.5.1, 5.2.11.6 and 5.1.4.14.
Aliases
0
alias CVE-2026-23943
Fixed_packages
0
url pkg:deb/debian/erlang@1:27.3.4.9%2Bdfsg-1?distro=trixie
purl pkg:deb/debian/erlang@1:27.3.4.9%2Bdfsg-1?distro=trixie
is_vulnerable true
affected_by_vulnerabilities
0
vulnerability VCID-gcn7-ak4r-eba3
1
vulnerability VCID-j7t3-nrjj-pfgp
2
vulnerability VCID-zegc-rj1x-ryau
resource_url http://public2.vulnerablecode.io/packages/pkg:deb/debian/erlang@1:27.3.4.9%252Bdfsg-1%3Fdistro=trixie
1
url pkg:deb/debian/erlang@1:27.3.4.10%2Bdfsg-1
purl pkg:deb/debian/erlang@1:27.3.4.10%2Bdfsg-1
is_vulnerable false
affected_by_vulnerabilities
resource_url http://public2.vulnerablecode.io/packages/pkg:deb/debian/erlang@1:27.3.4.10%252Bdfsg-1
2
url pkg:deb/debian/erlang@1:27.3.4.10%2Bdfsg-1?distro=trixie
purl pkg:deb/debian/erlang@1:27.3.4.10%2Bdfsg-1?distro=trixie
is_vulnerable false
affected_by_vulnerabilities
resource_url http://public2.vulnerablecode.io/packages/pkg:deb/debian/erlang@1:27.3.4.10%252Bdfsg-1%3Fdistro=trixie
Affected_packages
0
url pkg:deb/debian/erlang@1:23.2.6%2Bdfsg-1%2Bdeb11u1
purl pkg:deb/debian/erlang@1:23.2.6%2Bdfsg-1%2Bdeb11u1
is_vulnerable true
affected_by_vulnerabilities
0
vulnerability VCID-1283-nvxm-r7cw
1
vulnerability VCID-28fj-t5hy-x3gn
2
vulnerability VCID-c3vm-u9jn-83cs
3
vulnerability VCID-gcn7-ak4r-eba3
4
vulnerability VCID-h1k4-x8vr-5bch
5
vulnerability VCID-j7t3-nrjj-pfgp
6
vulnerability VCID-jg37-ud9r-d3h7
7
vulnerability VCID-jxzt-8wru-6yhk
8
vulnerability VCID-jzn6-bzzf-nugp
9
vulnerability VCID-nqfj-97y5-suar
10
vulnerability VCID-s9qn-9qdm-j7ej
11
vulnerability VCID-tnt7-d764-13cq
12
vulnerability VCID-vqnt-uyex-87fn
13
vulnerability VCID-w9yj-xg82-kyac
14
vulnerability VCID-wwcj-hwqc-f3g7
15
vulnerability VCID-xcks-117s-v3dd
16
vulnerability VCID-z6gs-aq96-gkaw
resource_url http://public2.vulnerablecode.io/packages/pkg:deb/debian/erlang@1:23.2.6%252Bdfsg-1%252Bdeb11u1
1
url pkg:deb/debian/erlang@1:23.2.6%2Bdfsg-1%2Bdeb11u1?distro=trixie
purl pkg:deb/debian/erlang@1:23.2.6%2Bdfsg-1%2Bdeb11u1?distro=trixie
is_vulnerable true
affected_by_vulnerabilities
0
vulnerability VCID-28fj-t5hy-x3gn
1
vulnerability VCID-gcn7-ak4r-eba3
2
vulnerability VCID-h1k4-x8vr-5bch
3
vulnerability VCID-j7t3-nrjj-pfgp
4
vulnerability VCID-s9qn-9qdm-j7ej
5
vulnerability VCID-w9yj-xg82-kyac
6
vulnerability VCID-wwcj-hwqc-f3g7
7
vulnerability VCID-xcks-117s-v3dd
8
vulnerability VCID-z6gs-aq96-gkaw
resource_url http://public2.vulnerablecode.io/packages/pkg:deb/debian/erlang@1:23.2.6%252Bdfsg-1%252Bdeb11u1%3Fdistro=trixie
2
url pkg:deb/debian/erlang@1:25.2.3%2Bdfsg-1%2Bdeb12u3
purl pkg:deb/debian/erlang@1:25.2.3%2Bdfsg-1%2Bdeb12u3
is_vulnerable true
affected_by_vulnerabilities
0
vulnerability VCID-1283-nvxm-r7cw
1
vulnerability VCID-28fj-t5hy-x3gn
2
vulnerability VCID-c3vm-u9jn-83cs
3
vulnerability VCID-gcn7-ak4r-eba3
4
vulnerability VCID-h1k4-x8vr-5bch
5
vulnerability VCID-j7t3-nrjj-pfgp
6
vulnerability VCID-jxzt-8wru-6yhk
7
vulnerability VCID-s9qn-9qdm-j7ej
8
vulnerability VCID-w9yj-xg82-kyac
9
vulnerability VCID-wwcj-hwqc-f3g7
10
vulnerability VCID-xcks-117s-v3dd
resource_url http://public2.vulnerablecode.io/packages/pkg:deb/debian/erlang@1:25.2.3%252Bdfsg-1%252Bdeb12u3
3
url pkg:deb/debian/erlang@1:25.2.3%2Bdfsg-1%2Bdeb12u3?distro=trixie
purl pkg:deb/debian/erlang@1:25.2.3%2Bdfsg-1%2Bdeb12u3?distro=trixie
is_vulnerable true
affected_by_vulnerabilities
0
vulnerability VCID-1283-nvxm-r7cw
1
vulnerability VCID-28fj-t5hy-x3gn
2
vulnerability VCID-c3vm-u9jn-83cs
3
vulnerability VCID-gcn7-ak4r-eba3
4
vulnerability VCID-h1k4-x8vr-5bch
5
vulnerability VCID-j7t3-nrjj-pfgp
6
vulnerability VCID-jxzt-8wru-6yhk
7
vulnerability VCID-s9qn-9qdm-j7ej
8
vulnerability VCID-w9yj-xg82-kyac
9
vulnerability VCID-wwcj-hwqc-f3g7
10
vulnerability VCID-xcks-117s-v3dd
resource_url http://public2.vulnerablecode.io/packages/pkg:deb/debian/erlang@1:25.2.3%252Bdfsg-1%252Bdeb12u3%3Fdistro=trixie
4
url pkg:deb/debian/erlang@1:27.3.4.1%2Bdfsg-1%2Bdeb13u1
purl pkg:deb/debian/erlang@1:27.3.4.1%2Bdfsg-1%2Bdeb13u1
is_vulnerable true
affected_by_vulnerabilities
0
vulnerability VCID-gcn7-ak4r-eba3
1
vulnerability VCID-h1k4-x8vr-5bch
2
vulnerability VCID-j7t3-nrjj-pfgp
3
vulnerability VCID-s9qn-9qdm-j7ej
4
vulnerability VCID-w9yj-xg82-kyac
5
vulnerability VCID-wwcj-hwqc-f3g7
6
vulnerability VCID-zegc-rj1x-ryau
resource_url http://public2.vulnerablecode.io/packages/pkg:deb/debian/erlang@1:27.3.4.1%252Bdfsg-1%252Bdeb13u1
5
url pkg:deb/debian/erlang@1:27.3.4.1%2Bdfsg-1%2Bdeb13u1?distro=trixie
purl pkg:deb/debian/erlang@1:27.3.4.1%2Bdfsg-1%2Bdeb13u1?distro=trixie
is_vulnerable true
affected_by_vulnerabilities
0
vulnerability VCID-gcn7-ak4r-eba3
1
vulnerability VCID-h1k4-x8vr-5bch
2
vulnerability VCID-j7t3-nrjj-pfgp
3
vulnerability VCID-s9qn-9qdm-j7ej
4
vulnerability VCID-w9yj-xg82-kyac
5
vulnerability VCID-wwcj-hwqc-f3g7
6
vulnerability VCID-zegc-rj1x-ryau
resource_url http://public2.vulnerablecode.io/packages/pkg:deb/debian/erlang@1:27.3.4.1%252Bdfsg-1%252Bdeb13u1%3Fdistro=trixie
References
0
reference_url https://api.first.org/data/v1/epss?cve=CVE-2026-23943
reference_id
reference_type
scores
0
value 0.00053
scoring_system epss
scoring_elements 0.16546
published_at 2026-04-02T12:55:00Z
1
value 0.00053
scoring_system epss
scoring_elements 0.16609
published_at 2026-04-04T12:55:00Z
2
value 0.00121
scoring_system epss
scoring_elements 0.31173
published_at 2026-04-12T12:55:00Z
3
value 0.00121
scoring_system epss
scoring_elements 0.31217
published_at 2026-04-11T12:55:00Z
4
value 0.00121
scoring_system epss
scoring_elements 0.31212
published_at 2026-04-09T12:55:00Z
5
value 0.00121
scoring_system epss
scoring_elements 0.31181
published_at 2026-04-08T12:55:00Z
6
value 0.00121
scoring_system epss
scoring_elements 0.31128
published_at 2026-04-07T12:55:00Z
7
value 0.00121
scoring_system epss
scoring_elements 0.31129
published_at 2026-04-13T12:55:00Z
url https://api.first.org/data/v1/epss?cve=CVE-2026-23943
1
reference_url https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-23943
reference_id
reference_type
scores
url https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-23943
2
reference_url https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
reference_id
reference_type
scores
0
value 5.3
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
url https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
3
reference_url https://github.com/erlang/otp/commit/0c1c04b191f6ab940e8fcfabce39eb5a8a6440a4
reference_id 0c1c04b191f6ab940e8fcfabce39eb5a8a6440a4
reference_type
scores
0
value 6.9
scoring_system cvssv4
scoring_elements 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
1
value Track
scoring_system ssvc
scoring_elements SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2026-03-13T16:01:40Z/
url https://github.com/erlang/otp/commit/0c1c04b191f6ab940e8fcfabce39eb5a8a6440a4
4
reference_url https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1130912
reference_id 1130912
reference_type
scores
url https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1130912
5
reference_url https://github.com/erlang/otp/commit/43a87b949bdff12d629a8c34146711d9da93b1b1
reference_id 43a87b949bdff12d629a8c34146711d9da93b1b1
reference_type
scores
0
value 6.9
scoring_system cvssv4
scoring_elements 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
1
value Track
scoring_system ssvc
scoring_elements SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2026-03-13T16:01:40Z/
url https://github.com/erlang/otp/commit/43a87b949bdff12d629a8c34146711d9da93b1b1
6
reference_url https://github.com/erlang/otp/commit/93073c3bd338c60cd2bae715ce6a1d4ffc1a8fd3
reference_id 93073c3bd338c60cd2bae715ce6a1d4ffc1a8fd3
reference_type
scores
0
value 6.9
scoring_system cvssv4
scoring_elements 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
1
value Track
scoring_system ssvc
scoring_elements SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2026-03-13T16:01:40Z/
url https://github.com/erlang/otp/commit/93073c3bd338c60cd2bae715ce6a1d4ffc1a8fd3
7
reference_url https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:erlang:erlang\/otp:*:*:*:*:*:*:*:*
reference_id cpe:2.3:a:erlang:erlang\/otp:*:*:*:*:*:*:*:*
reference_type
scores
url https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:erlang:erlang\/otp:*:*:*:*:*:*:*:*
8
reference_url https://cna.erlef.org/cves/CVE-2026-23943.html
reference_id CVE-2026-23943.html
reference_type
scores
0
value 6.9
scoring_system cvssv4
scoring_elements 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
1
value Track
scoring_system ssvc
scoring_elements SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2026-03-13T16:01:40Z/
url https://cna.erlef.org/cves/CVE-2026-23943.html
9
reference_url https://osv.dev/vulnerability/EEF-CVE-2026-23943
reference_id EEF-CVE-2026-23943
reference_type
scores
0
value 6.9
scoring_system cvssv4
scoring_elements 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
1
value Track
scoring_system ssvc
scoring_elements SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2026-03-13T16:01:40Z/
url https://osv.dev/vulnerability/EEF-CVE-2026-23943
10
reference_url https://github.com/erlang/otp/security/advisories/GHSA-c836-qprm-jw9r
reference_id GHSA-c836-qprm-jw9r
reference_type
scores
0
value 6.9
scoring_system cvssv4
scoring_elements 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
1
value Track
scoring_system ssvc
scoring_elements SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2026-03-13T16:01:40Z/
url https://github.com/erlang/otp/security/advisories/GHSA-c836-qprm-jw9r
11
reference_url https://www.erlang.org/doc/system/versions.html#order-of-versions
reference_id versions.html#order-of-versions
reference_type
scores
0
value 6.9
scoring_system cvssv4
scoring_elements 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
1
value Track
scoring_system ssvc
scoring_elements SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2026-03-13T16:01:40Z/
url https://www.erlang.org/doc/system/versions.html#order-of-versions
Weaknesses
0
cwe_id 409
name Improper Handling of Highly Compressed Data (Data Amplification)
description The product does not handle or incorrectly handles a compressed input with a very high compression ratio that produces a large output.
Exploits
Severity_range_score5.3 - 6.9
Exploitability0.5
Weighted_severity6.2
Risk_score3.1
Resource_urlhttp://public2.vulnerablecode.io/vulnerabilities/VCID-h1k4-x8vr-5bch