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Lookup for vulnerable packages by Package URL.

Purlpkg:deb/debian/apache2@2.4.46-5?distro=trixie
Typedeb
Namespacedebian
Nameapache2
Version2.4.46-5
Qualifiers
distro trixie
Subpath
Is_vulnerablefalse
Next_non_vulnerable_version2.4.46-6
Latest_non_vulnerable_version2.4.66-8
Affected_by_vulnerabilities
Fixing_vulnerabilities
0
url VCID-6b7y-562y-suce
vulnerability_id VCID-6b7y-562y-suce
summary 
Apache HTTP Server protocol handler for the HTTP/2 protocol checks received request headers against the size limitations as configured for the server and used for the HTTP/1 protocol as well. On violation of these restrictions and HTTP response is sent to the client with a status code indicating why the request was rejected.

This rejection response was not fully initialised in the HTTP/2 protocol handler if the offending header was the very first one received or appeared in a a footer. This led to a NULL pointer dereference on initialised memory, crashing reliably the child process. Since such a triggering HTTP/2 request is easy to craft and submit, this can be exploited to DoS the server.

This issue affected  mod_http2 1.15.17 and Apache HTTP Server version 2.4.47 only. Apache HTTP Server 2.4.47 was never released.
references
0
reference_url https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-31618.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-2021-31618.json
1
reference_url https://api.first.org/data/v1/epss?cve=CVE-2021-31618
reference_id
reference_type
scores
0
value 0.11001
scoring_system epss
scoring_elements 0.93424
published_at 2026-04-12T12:55:00Z
1
value 0.11001
scoring_system epss
scoring_elements 0.934
published_at 2026-04-02T12:55:00Z
2
value 0.11001
scoring_system epss
scoring_elements 0.93416
published_at 2026-04-08T12:55:00Z
3
value 0.11001
scoring_system epss
scoring_elements 0.93392
published_at 2026-04-01T12:55:00Z
4
value 0.11001
scoring_system epss
scoring_elements 0.93408
published_at 2026-04-07T12:55:00Z
5
value 0.11001
scoring_system epss
scoring_elements 0.93425
published_at 2026-04-13T12:55:00Z
6
value 0.11001
scoring_system epss
scoring_elements 0.93419
published_at 2026-04-09T12:55:00Z
url https://api.first.org/data/v1/epss?cve=CVE-2021-31618
2
reference_url https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-35452
reference_id
reference_type
scores
url https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-35452
3
reference_url https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-26690
reference_id
reference_type
scores
url https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-26690
4
reference_url https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-26691
reference_id
reference_type
scores
url https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-26691
5
reference_url https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30641
reference_id
reference_type
scores
url https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30641
6
reference_url https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-31618
reference_id
reference_type
scores
url https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-31618
7
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
8
reference_url https://bugzilla.redhat.com/show_bug.cgi?id=1968013
reference_id 1968013
reference_type
scores
url https://bugzilla.redhat.com/show_bug.cgi?id=1968013
9
reference_url http://www.openwall.com/lists/oss-security/2024/03/13/2
reference_id 2
reference_type
scores
0
value Track
scoring_system ssvc
scoring_elements SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2024-05-20T16:18:33Z/
url http://www.openwall.com/lists/oss-security/2024/03/13/2
10
reference_url https://seclists.org/oss-sec/2021/q2/206
reference_id 206
reference_type
scores
0
value Track
scoring_system ssvc
scoring_elements SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2024-05-20T16:18:33Z/
url https://seclists.org/oss-sec/2021/q2/206
11
reference_url https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2NKJ3ZA3FTSZ2QBBPKS6BYGAWYRABNQQ/
reference_id 2NKJ3ZA3FTSZ2QBBPKS6BYGAWYRABNQQ
reference_type
scores
0
value Track
scoring_system ssvc
scoring_elements SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2024-05-20T16:18:33Z/
url https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2NKJ3ZA3FTSZ2QBBPKS6BYGAWYRABNQQ/
12
reference_url http://www.openwall.com/lists/oss-security/2021/06/10/9
reference_id 9
reference_type
scores
0
value Track
scoring_system ssvc
scoring_elements SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2024-05-20T16:18:33Z/
url http://www.openwall.com/lists/oss-security/2021/06/10/9
13
reference_url https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=989562
reference_id 989562
reference_type
scores
url https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=989562
14
reference_url https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/A73QJ4HPUMU26I6EULG6SCK67TUEXZYR/
reference_id A73QJ4HPUMU26I6EULG6SCK67TUEXZYR
reference_type
scores
0
value Track
scoring_system ssvc
scoring_elements SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2024-05-20T16:18:33Z/
url https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/A73QJ4HPUMU26I6EULG6SCK67TUEXZYR/
15
reference_url https://security.archlinux.org/ASA-202106-23
reference_id ASA-202106-23
reference_type
scores
url https://security.archlinux.org/ASA-202106-23
16
reference_url https://security.archlinux.org/AVG-2041
reference_id AVG-2041
reference_type
scores
0
value High
scoring_system archlinux
scoring_elements
url https://security.archlinux.org/AVG-2041
17
reference_url https://httpd.apache.org/security/json/CVE-2021-31618.json
reference_id CVE-2021-31618
reference_type
scores
0
value important
scoring_system apache_httpd
scoring_elements
url https://httpd.apache.org/security/json/CVE-2021-31618.json
18
reference_url https://www.debian.org/security/2021/dsa-4937
reference_id dsa-4937
reference_type
scores
0
value Track
scoring_system ssvc
scoring_elements SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2024-05-20T16:18:33Z/
url https://www.debian.org/security/2021/dsa-4937
19
reference_url https://security.gentoo.org/glsa/202107-38
reference_id GLSA-202107-38
reference_type
scores
0
value Track
scoring_system ssvc
scoring_elements SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2024-05-20T16:18:33Z/
url https://security.gentoo.org/glsa/202107-38
20
reference_url https://security.netapp.com/advisory/ntap-20210727-0008/
reference_id ntap-20210727-0008
reference_type
scores
0
value Track
scoring_system ssvc
scoring_elements SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2024-05-20T16:18:33Z/
url https://security.netapp.com/advisory/ntap-20210727-0008/
21
reference_url https://lists.apache.org/thread.html/r14b66ef0f4f569fd515a3f96cd4eb58bd9a8ff525cc326bb0359664f%40%3Ccvs.httpd.apache.org%3E
reference_id r14b66ef0f4f569fd515a3f96cd4eb58bd9a8ff525cc326bb0359664f%40%3Ccvs.httpd.apache.org%3E
reference_type
scores
0
value Track
scoring_system ssvc
scoring_elements SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2024-05-20T16:18:33Z/
url https://lists.apache.org/thread.html/r14b66ef0f4f569fd515a3f96cd4eb58bd9a8ff525cc326bb0359664f%40%3Ccvs.httpd.apache.org%3E
22
reference_url https://lists.apache.org/thread.html/r783b6558abf3305b17ea462bed4bd66d82866438999bf38cef6d11d1%40%3Ccvs.httpd.apache.org%3E
reference_id r783b6558abf3305b17ea462bed4bd66d82866438999bf38cef6d11d1%40%3Ccvs.httpd.apache.org%3E
reference_type
scores
0
value Track
scoring_system ssvc
scoring_elements SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2024-05-20T16:18:33Z/
url https://lists.apache.org/thread.html/r783b6558abf3305b17ea462bed4bd66d82866438999bf38cef6d11d1%40%3Ccvs.httpd.apache.org%3E
fixed_packages
0
url pkg:deb/debian/apache2@2.4.46-5?distro=trixie
purl pkg:deb/debian/apache2@2.4.46-5?distro=trixie
is_vulnerable false
affected_by_vulnerabilities
resource_url http://public2.vulnerablecode.io/packages/pkg:deb/debian/apache2@2.4.46-5%3Fdistro=trixie
1
url pkg:deb/debian/apache2@2.4.62-1~deb11u1?distro=trixie
purl pkg:deb/debian/apache2@2.4.62-1~deb11u1?distro=trixie
is_vulnerable false
affected_by_vulnerabilities
resource_url http://public2.vulnerablecode.io/packages/pkg:deb/debian/apache2@2.4.62-1~deb11u1%3Fdistro=trixie
2
url pkg:deb/debian/apache2@2.4.66-1~deb12u1?distro=trixie
purl pkg:deb/debian/apache2@2.4.66-1~deb12u1?distro=trixie
is_vulnerable false
affected_by_vulnerabilities
resource_url http://public2.vulnerablecode.io/packages/pkg:deb/debian/apache2@2.4.66-1~deb12u1%3Fdistro=trixie
3
url pkg:deb/debian/apache2@2.4.66-1~deb13u2?distro=trixie
purl pkg:deb/debian/apache2@2.4.66-1~deb13u2?distro=trixie
is_vulnerable false
affected_by_vulnerabilities
resource_url http://public2.vulnerablecode.io/packages/pkg:deb/debian/apache2@2.4.66-1~deb13u2%3Fdistro=trixie
4
url pkg:deb/debian/apache2@2.4.66-8?distro=trixie
purl pkg:deb/debian/apache2@2.4.66-8?distro=trixie
is_vulnerable false
affected_by_vulnerabilities
resource_url http://public2.vulnerablecode.io/packages/pkg:deb/debian/apache2@2.4.66-8%3Fdistro=trixie
aliases CVE-2021-31618
risk_score 4.0
exploitability 0.5
weighted_severity 8.0
resource_url http://public2.vulnerablecode.io/vulnerabilities/VCID-6b7y-562y-suce
Risk_scorenull
Resource_urlhttp://public2.vulnerablecode.io/packages/pkg:deb/debian/apache2@2.4.46-5%3Fdistro=trixie