I Librarian I-librarian version 4.8 and earlier contains a XML External Entity (XXE) vulnerability in line 154 of importmetadata.php(simple…

published 2018-03-13 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-1848

cvss: 10.0; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.8%; EPSS 1.8% chance of exploitation in 30 days, percentile 78%
public exploits: 0; none known

I Librarian I-librarian version 4.8 and earlier contains a XML External Entity (XXE) vulnerability in line 154 of importmetadata.php(simplexml_load_string) that can result in an attacker reading the contents of a file and SSRF. This attack appear to be exploitable via posting xml in the Parameter form_import_textarea.

Exploit prediction

1.79% chance of exploitation in the next 30 days, higher than 78% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

github.com https://github.com/mkucej/i-librarian/issues/116 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
NVD	3.1	10.0	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
NVD	2.0	7.5	AV:N/AC:L/Au:N/C:P/I:P/A:P

Classification

Weakness

CWE-611 Improper Restriction of XML External Entity Reference
CWE-918 Server-Side Request Forgery

References

github.com /mkucej/i-librarian/issues/116
exploit, third-party-advisory

Sources

CVE List CVE-2018-1000124
NVD CVE-2018-1000124

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary