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CVE-2022-30780

56
FAUCET Score

CVE-2022-30780 is a denial-of-service vulnerability affecting Lighttpd versions 1.4.56 through 1.4.58, caused by a typo that prevents proper handling of large headers, leading to high CPU consumption. It carries a CVSS score of 7.5 (High), indicating it can be exploited remotely with low attack complexity and no user interaction, resulting in high availability impact. Despite its high EPSS and FAUCET risk scores, there is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
1.4.56CPE matchmatch criteria
cpe:2.3:a:lighttpd:lighttpd:1.4.56:*:*:*:*:*:*:*
1.4.57CPE matchmatch criteria
cpe:2.3:a:lighttpd:lighttpd:1.4.57:*:*:*:*:*:*:*
1.4.58CPE matchmatch criteria
cpe:2.3:a:lighttpd:lighttpd:1.4.58:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
56.42%
Probability of exploitation in next 30 days
EPSS Percentile
99.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.5642 is in the 98th percentile among its peer group of 51,455 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

github.com / lighttpd/lighttpd1.4
ProductThird Party Advisory
github.com / p0dalirius/CVE-2022-30780-lighttpd-denial-of-service
ExploitThird Party Advisory
podalirius.net / en/cves/2022-30780
ExploitThird Party Advisory
redmine.lighttpd.net / issues/3059
Issue TrackingPatchVendor Advisory