CVE-2022-30780
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.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 57.2%, higher than 99% of all known CVEs. Patch or mitigate before the next change window.
Description
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.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 57.19% probability · 99th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-682
- Affected
- lighttpd/lighttpd
- Source
- cve@mitre.org
EPSS 57.2% since 3 November 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://github.com/lighttpd/lighttpd1.4Product, Third Party Advisory
- https://github.com/p0dalirius/CVE-2022-30780-lighttpd-denial-of-serviceExploit, Third Party Advisory
- https://podalirius.net/en/cves/2022-30780/Exploit, Third Party Advisory
- https://redmine.lighttpd.net/issues/3059Issue Tracking, Patch, Vendor Advisory
- https://github.com/lighttpd/lighttpd1.4Product, Third Party Advisory
- https://github.com/p0dalirius/CVE-2022-30780-lighttpd-denial-of-serviceExploit, Third Party Advisory
- https://podalirius.net/en/cves/2022-30780/Exploit, Third Party Advisory
- https://redmine.lighttpd.net/issues/3059Issue Tracking, Patch, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.