CVE-2018-16789
CVSS v3
7.5
HIGH
EPSS Score
6.0 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
libhttp/url.c in shellinabox through 2.20 has an implementation flaw in the HTTP request parsing logic. By sending a crafted multipart/form-data HTTP request, an attacker could exploit this to force shellinaboxd into an infinite loop, exhausting available CPU resources and taking the service down.
Technical details
- Published
- 2019-03-21
Frequently asked questions
What is CVE-2018-16789?
libhttp/url.c in shellinabox through 2.20 has an implementation flaw in the HTTP request parsing logic. By sending a crafted multipart/form-data HTTP request, an attacker could exploit this to force shellinaboxd into an infinite loop, exhausting available CPU resources and taking the service down.
Is CVE-2018-16789 actively exploited?
Active exploitation of CVE-2018-16789 has not been confirmed. Its EPSS score was 6.0% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2018-16789?
CVE-2018-16789 has a CVSS v3 base score of 7.5 (HIGH severity).
Is CVE-2018-16789 affecting your environment?
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