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Vulnerability details: VCID-cwwh-drev-zqh3
Vulnerability ID VCID-cwwh-drev-zqh3
Aliases CVE-2022-30780
Summary Lighttpd 1.4.56 through 1.4.58 allows a remote attacker to cause a denial of service (CPU consumption from stuck connections) because connection_read_header_more in connections.c has a typo that disrupts use of multiple read operations on large headers.
Status Published
Exploitability 0.5
Weighted Severity 6.8
Risk 3.4
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-682 Incorrect Calculation
System Score Found at
epss 0.68601 https://api.first.org/data/v1/epss?cve=CVE-2022-30780
epss 0.73157 https://api.first.org/data/v1/epss?cve=CVE-2022-30780
epss 0.73157 https://api.first.org/data/v1/epss?cve=CVE-2022-30780
epss 0.73157 https://api.first.org/data/v1/epss?cve=CVE-2022-30780
epss 0.73157 https://api.first.org/data/v1/epss?cve=CVE-2022-30780
epss 0.73157 https://api.first.org/data/v1/epss?cve=CVE-2022-30780
epss 0.7529 https://api.first.org/data/v1/epss?cve=CVE-2022-30780
epss 0.7529 https://api.first.org/data/v1/epss?cve=CVE-2022-30780
epss 0.7529 https://api.first.org/data/v1/epss?cve=CVE-2022-30780
epss 0.7529 https://api.first.org/data/v1/epss?cve=CVE-2022-30780
epss 0.7529 https://api.first.org/data/v1/epss?cve=CVE-2022-30780
epss 0.7529 https://api.first.org/data/v1/epss?cve=CVE-2022-30780
epss 0.7529 https://api.first.org/data/v1/epss?cve=CVE-2022-30780
epss 0.7529 https://api.first.org/data/v1/epss?cve=CVE-2022-30780
epss 0.7529 https://api.first.org/data/v1/epss?cve=CVE-2022-30780
cvssv3.1 7.5 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv2 5.0 https://nvd.nist.gov/vuln/detail/CVE-2022-30780
cvssv3.1 7.5 https://nvd.nist.gov/vuln/detail/CVE-2022-30780
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2022-30780
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-30780
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://github.com/lighttpd/lighttpd1.4
https://github.com/p0dalirius/CVE-2022-30780-lighttpd-denial-of-service
https://podalirius.net/en/cves/2022-30780/
https://redmine.lighttpd.net/issues/3059
cpe:2.3:a:lighttpd:lighttpd:1.4.56:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:lighttpd:lighttpd:1.4.56:*:*:*:*:*:*:*
cpe:2.3:a:lighttpd:lighttpd:1.4.57:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:lighttpd:lighttpd:1.4.57:*:*:*:*:*:*:*
cpe:2.3:a:lighttpd:lighttpd:1.4.58:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:lighttpd:lighttpd:1.4.58:*:*:*:*:*:*:*
CVE-2022-30780 https://nvd.nist.gov/vuln/detail/CVE-2022-30780
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2022-30780
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2022-30780
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.98575
EPSS Score 0.68601
Published At Sept. 16, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T10:30:33.398122+00:00 NVD Importer Import https://nvd.nist.gov/vuln/detail/CVE-2022-30780 37.0.0