What is CVE-2018-1077?

CVE-2018-1077 is a high-severity vulnerability in Spacewalk, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 7.5/10. Published 2018-03-14.

How severe is CVE-2018-1077?

High severity. CVSS v3 base score is 7.5 out of 10.

XXE in Spacewalk

CVE-2018-1077

Spacewalk 2.6 contains an API which has an XXE flaw allowing for the disclosure of potentially sensitive information from the server.

Vulnerability class: XXE (XML External Entity)

Published 2018-03-14 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.010 (63.8th percentile), scored 2026-10-24.

Low probability of exploitation in the next 30 days, but still tracked. 64th percentile — 63.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000

Affected products

Spacewalk — versions 2.6
Red Hat Satellite — versions 5.0
Red Hat Spacewalk — versions 2.6

Weakness classification (CWE)

CWE-611 — Improper Restriction of XML External Entity Reference (XXE)

References

bugzilla.redhat.com/show_bug.cgi (Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2018-1077?: CVE-2018-1077 is a high-severity vulnerability in Spacewalk, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 7.5/10. Published 2018-03-14.
How severe is CVE-2018-1077?: High severity. CVSS v3 base score is 7.5 out of 10.