What is CVE-2019-19998?

CVE-2019-19998 is a high-severity vulnerability in Xiuno Xiunobbs, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 7.5/10. Published 2019-12-26.

How severe is CVE-2019-19998?

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

XXE in Xiuno Xiunobbs

CVE-2019-19998

Xiuno BBS 4.0 allows XXE via plugin/xn_wechat_public/route/token.php.

Vulnerability class: XXE (XML External Entity)

Published 2019-12-26 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.011 (64.5th percentile), scored 2026-10-02.

Low probability of exploitation in the next 30 days, but still tracked. 65th percentile — 64.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: 0.000

Affected products

Xiuno Xiunobbs — versions 4.0

Weakness classification (CWE)

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

References

gitee.com/xiuno/xiunobbs/issues/I177MY (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2019-19998?: CVE-2019-19998 is a high-severity vulnerability in Xiuno Xiunobbs, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 7.5/10. Published 2019-12-26.
How severe is CVE-2019-19998?: High severity. CVSS v3 base score is 7.5 out of 10.