Unauthenticated Stored XSS in GLPI

published 2020-10-07 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-7246

cvss: 8.0; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.8%; EPSS 0.8% chance of exploitation in 30 days, percentile 55%
public exploits: 0; none known

In GLPI before version 9.5.2, the `install/install.php` endpoint insecurely stores user input into the database as `url_base` and `url_base_api`. These settings are referenced throughout the application and allow for vulnerabilities like Cross-Site Scripting and Insecure Redirection Since authentication is not required to perform these changes,anyone could point these fields at malicious websites or form input in a way to trigger XSS. Leveraging JavaScript it's possible to steal cookies, perform actions as the user, etc. The issue is patched in version 9.5.2.

Patch / fix

fixed in 1 links 1

glpi-project glpi 9.5.2

github.com/glpi-project/glpi@a8109d4 commit

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2020-15177 updated 2026-02-23 cvss 7.3

glpi: install/install.php endpoint insecurely stores user input into the database as url_base and url_base_api leads to XSS

Red Hat All currently supported Red Hat products
not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.77% chance of exploitation in the next 30 days, higher than 55% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	8.0	CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N
NVD	3.1	6.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
NVD	2.0	4.3	AV:N/AC:M/Au:N/C:N/I:P/A:N

Affected products

glpi-project glpi

Classification

Weakness

CWE-79 Improper Neutralization of Input During Web Page Generation

References

github.com /glpi-project/glpi/commit/a8109d4ee970a222faf48cf48fae2d2f06465796
patch, third-party-advisory
github.com /glpi-project/glpi/security/advisories/GHSA-prvh-9m4h-4m79
third-party-advisory

Sources

CVE List CVE-2020-15177
NVD CVE-2020-15177

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