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CVE-2019-20800

31
FAUCET Score

CVE-2019-20800 is a critical out-of-bounds write vulnerability affecting Cherokee web server versions through 1.2.104. An unauthenticated remote attacker can trigger this flaw by sending numerous request headers, such as repeated "Host" headers, leading to a denial of service, arbitrary code execution, or information disclosure. Despite its CVSS score of 9.8, indicating high impact and low attack complexity, there is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.2.104CPE matchmatch criteria
cpe:2.3:a:cherokee-project:cherokee:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.15%
Probability of exploitation in next 30 days
EPSS Percentile
80.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0215 is in the 69th percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

github.com / cherokee/webserver/issues/1224
ExploitThird Party Advisory
logicaltrust.net / blog/2019/11/cherokee.html
ExploitThird Party Advisory
security.gentoo.org / glsa/202012-09
Third Party Advisory