What is CVE-2015-3907?

CVE-2015-3907 is a critical-severity vulnerability in Codeigniter-Restserver Project, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 9.8/10. Published 2019-07-03.

How severe is CVE-2015-3907?

Critical severity. CVSS v3 base score is 9.8 out of 10.

XXE in Codeigniter-Restserver Project

CVE-2015-3907

CodeIgniter Rest Server (aka codeigniter-restserver) 2.7.1 allows XXE attacks.

Vulnerability class: XXE (XML External Entity)

Published 2019-07-03 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.016 (75.4th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 75th percentile — 75.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.016 · newest: 0.016 · change: 0.000

Affected products

Codeigniter-Restserver Project — versions 2.7.1

Weakness classification (CWE)

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

References

kb.hitcon.org/post/127839729207/codeigniter-rest-server-module-xxe-cve-2015-3907 (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2015-3907?: CVE-2015-3907 is a critical-severity vulnerability in Codeigniter-Restserver Project, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 9.8/10. Published 2019-07-03.
How severe is CVE-2015-3907?: Critical severity. CVSS v3 base score is 9.8 out of 10.