Skip to content
Fencer Vulns
high 7.5

CVE-2022-30780 in the critical feed json

Lighttpd 1.4.56 through 1.4.58 allows a remote attacker to cause a denial of service (CPU consumption from stuck connections) because conne…

published 2022-06-11 4 y ago modified 2026-06-17 4 mo ago also EUVD-2022-52604

cvss
7.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
57.2%
EPSS 57.2% chance of exploitation in 30 days, percentile 99%
public exploits
0
none known

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.

Patch / fix

  • lighttpd Debian 14, Debian 13, Debian 12 1.4.59-1

debian advisories DEBIAN-CVE-2022-30780

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2022-30780 updated cvss 5.9

lighttpd: incorrect connection handling allows a remote attacker to cause a DoS

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

57.19% chance of exploitation in the next 30 days, higher than 99% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • podalirius.net https://podalirius.net/en/cves/2022-30780/ referenced PoC, tagged "exploit" by a source, unverified
  • github.com https://github.com/p0dalirius/CVE-2022-30780-lighttpd-denial-of-service referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.