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Lookup for vulnerable packages by Package URL.

Purlpkg:deb/debian/puma@3.12.0-4?distro=trixie
Typedeb
Namespacedebian
Namepuma
Version3.12.0-4
Qualifiers
distro trixie
Subpath
Is_vulnerablefalse
Next_non_vulnerable_version3.12.4-1
Latest_non_vulnerable_version6.6.0-4
Affected_by_vulnerabilities
Fixing_vulnerabilities
0
url VCID-tsrb-zgtb-8ybu
vulnerability_id VCID-tsrb-zgtb-8ybu
summary 
## Keepalive thread overload/DoS

### Impact

A poorly-behaved client could use keepalive requests to monopolize Puma's reactor and create a denial of service attack.

If more keepalive connections to Puma are opened than there are threads available, additional connections will wait permanently if the attacker sends requests frequently enough.

### Patches

This vulnerability is patched in Puma 4.3.1 and 3.12.2.

### Workarounds

Reverse proxies in front of Puma could be configured to always allow less than X keepalive connections to a Puma cluster or process, where X is the number of threads configured in Puma's thread pool.

### For more information

If you have any questions or comments about this advisory:

* Open an issue at [puma](github.com/puma/puma).
references
0
reference_url https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2019-16770.json
reference_id
reference_type
scores
0
value 7.5
scoring_system cvssv3
scoring_elements CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
url https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2019-16770.json
1
reference_url https://api.first.org/data/v1/epss?cve=CVE-2019-16770
reference_id
reference_type
scores
0
value 0.01587
scoring_system epss
scoring_elements 0.81658
published_at 2026-04-21T12:55:00Z
1
value 0.01587
scoring_system epss
scoring_elements 0.81654
published_at 2026-04-18T12:55:00Z
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scoring_system epss
scoring_elements 0.81624
published_at 2026-04-12T12:55:00Z
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value 0.01587
scoring_system epss
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published_at 2026-04-02T12:55:00Z
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value 0.01587
scoring_system epss
scoring_elements 0.81636
published_at 2026-04-11T12:55:00Z
5
value 0.01587
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scoring_elements 0.81616
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value 0.01587
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published_at 2026-04-01T12:55:00Z
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value 0.01587
scoring_system epss
scoring_elements 0.81585
published_at 2026-04-04T12:55:00Z
url https://api.first.org/data/v1/epss?cve=CVE-2019-16770
2
reference_url https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-16770
reference_id
reference_type
scores
url https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-16770
3
reference_url https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
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
url https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
4
reference_url https://github.com/advisories/GHSA-7xx3-m584-x994
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
1
value MODERATE
scoring_system cvssv3.1_qr
scoring_elements
2
value MODERATE
scoring_system generic_textual
scoring_elements
url https://github.com/advisories/GHSA-7xx3-m584-x994
5
reference_url https://github.com/puma/puma/security/advisories/GHSA-7xx3-m584-x994
reference_id
reference_type
scores
0
value 8.8
scoring_system cvssv3
scoring_elements
1
value 5.3
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scoring_elements CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
2
value MODERATE
scoring_system cvssv3.1_qr
scoring_elements
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value MODERATE
scoring_system generic_textual
scoring_elements
url https://github.com/puma/puma/security/advisories/GHSA-7xx3-m584-x994
6
reference_url https://github.com/rubysec/ruby-advisory-db/blob/master/gems/puma/CVE-2019-16770.yml
reference_id
reference_type
scores
0
value 5.3
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1
value MODERATE
scoring_system generic_textual
scoring_elements
url https://github.com/rubysec/ruby-advisory-db/blob/master/gems/puma/CVE-2019-16770.yml
7
reference_url https://lists.debian.org/debian-lts-announce/2022/05/msg00034.html
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
1
value MODERATE
scoring_system generic_textual
scoring_elements
url https://lists.debian.org/debian-lts-announce/2022/05/msg00034.html
8
reference_url https://nvd.nist.gov/vuln/detail/CVE-2019-16770
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
1
value MODERATE
scoring_system generic_textual
scoring_elements
url https://nvd.nist.gov/vuln/detail/CVE-2019-16770
9
reference_url https://bugzilla.redhat.com/show_bug.cgi?id=1831297
reference_id 1831297
reference_type
scores
url https://bugzilla.redhat.com/show_bug.cgi?id=1831297
10
reference_url https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=946312
reference_id 946312
reference_type
scores
url https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=946312
fixed_packages
0
url pkg:deb/debian/puma@3.12.0-4?distro=trixie
purl pkg:deb/debian/puma@3.12.0-4?distro=trixie
is_vulnerable false
affected_by_vulnerabilities
resource_url http://public2.vulnerablecode.io/packages/pkg:deb/debian/puma@3.12.0-4%3Fdistro=trixie
1
url pkg:deb/debian/puma@4.3.8-1%2Bdeb11u2?distro=trixie
purl pkg:deb/debian/puma@4.3.8-1%2Bdeb11u2?distro=trixie
is_vulnerable true
affected_by_vulnerabilities
0
vulnerability VCID-fhu7-fyha-9khj
resource_url http://public2.vulnerablecode.io/packages/pkg:deb/debian/puma@4.3.8-1%252Bdeb11u2%3Fdistro=trixie
2
url pkg:deb/debian/puma@5.6.5-3%2Bdeb12u1?distro=trixie
purl pkg:deb/debian/puma@5.6.5-3%2Bdeb12u1?distro=trixie
is_vulnerable false
affected_by_vulnerabilities
resource_url http://public2.vulnerablecode.io/packages/pkg:deb/debian/puma@5.6.5-3%252Bdeb12u1%3Fdistro=trixie
3
url pkg:deb/debian/puma@6.6.0-4?distro=trixie
purl pkg:deb/debian/puma@6.6.0-4?distro=trixie
is_vulnerable false
affected_by_vulnerabilities
resource_url http://public2.vulnerablecode.io/packages/pkg:deb/debian/puma@6.6.0-4%3Fdistro=trixie
aliases CVE-2019-16770, GHSA-7xx3-m584-x994
risk_score 4.0
exploitability 0.5
weighted_severity 7.9
resource_url http://public2.vulnerablecode.io/vulnerabilities/VCID-tsrb-zgtb-8ybu
Risk_scorenull
Resource_urlhttp://public2.vulnerablecode.io/packages/pkg:deb/debian/puma@3.12.0-4%3Fdistro=trixie