What is CVE-2018-1000165?

CVE-2018-1000165 is a high-severity vulnerability in Lightsaml, classified under Incorrect Permission Assignment for Critical Resource. CVSS score: 7.5/10. Published 2018-04-18.

How severe is CVE-2018-1000165?

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

Vulnerability in Lightsaml

CVE-2018-1000165

LightSAML version prior to 1.3.5 contains a Incorrect Access Control vulnerability in signature validation in readers in src/LightSaml/Model/XmlDSig/ that can result in impersonation of any user from Identity Provider. This vulnerability appears to have been fixed in 1.3.5 and later.

Published 2018-04-18 · 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:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.012 (67.7th percentile), scored 2026-10-01.

Low probability of exploitation in the next 30 days, but still tracked. 68th percentile — 67.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: -0.000

Affected products

Lightsaml

Weakness classification (CWE)

CWE-732 — Incorrect Permission Assignment for Critical Resource

References

github.com/lightSAML/lightSAML/commit/47cef07bb09779df15620799f3763d1b8d32307a (Patch, Third Party Advisory)
github.com/lightSAML/lightSAML/releases/tag/1.3.5 (Third Party Advisory)

Frequently asked questions

What is CVE-2018-1000165?: CVE-2018-1000165 is a high-severity vulnerability in Lightsaml, classified under Incorrect Permission Assignment for Critical Resource. CVSS score: 7.5/10. Published 2018-04-18.
How severe is CVE-2018-1000165?: High severity. CVSS v3 base score is 7.5 out of 10.