What is CVE-2018-10377?

CVE-2018-10377 is a medium-severity vulnerability in Portswigger Burp Suite, classified under Improper Certificate Validation. CVSS score: 5.9/10. Published 2018-06-17.

How severe is CVE-2018-10377?

Medium severity. CVSS v3 base score is 5.9 out of 10.

Vulnerability in Portswigger Burp Suite

CVE-2018-10377

PortSwigger Burp Suite before 1.7.34 has Improper Certificate Validation of the Collaborator server certificate, which might allow man-in-the-middle attackers to obtain interaction data.

Vulnerability class: Improper Certificate Validation

Published 2018-06-17 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.009 (57.5th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 57th percentile — 57.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000

Affected products

Portswigger Burp Suite

Weakness classification (CWE)

CWE-295 — Improper Certificate Validation

References

releases.portswigger.net/2018/06/1734.html (Vendor Advisory)
hackerone.com/reports/337680 (Third Party Advisory)
integritylabs.io/advisories/cve-2018-10377 (Third Party Advisory)

Frequently asked questions

What is CVE-2018-10377?: CVE-2018-10377 is a medium-severity vulnerability in Portswigger Burp Suite, classified under Improper Certificate Validation. CVSS score: 5.9/10. Published 2018-06-17.
How severe is CVE-2018-10377?: Medium severity. CVSS v3 base score is 5.9 out of 10.