What is CVE-2025-44136?

CVE-2025-44136 is a critical-severity vulnerability in Maptiler Tileserver PHP, classified under Cross-site Scripting. CVSS score: 9.8/10. Published 2025-07-29.

How severe is CVE-2025-44136?

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

Is CVE-2025-44136 known to be exploited?

3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XSS in Maptiler Tileserver PHP

CVE-2025-44136

MapTiler Tileserver-php v2.0 is vulnerable to Cross Site Scripting (XSS). The GET parameter "layer" is reflected in an error message without html encoding. This leads to XSS and allows an unauthenticated attacker to execute arbitrary HTML or JavaScript code on a victim's browser.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.025 (83.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Maptiler Tileserver_php — versions 2.0
N/a — versions n/a

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

References

cve@mitre.org (Exploit, Issue Tracking)
cve@mitre.org (Exploit)

Frequently asked questions

What is CVE-2025-44136?: CVE-2025-44136 is a critical-severity vulnerability in Maptiler Tileserver PHP, classified under Cross-site Scripting. CVSS score: 9.8/10. Published 2025-07-29.
How severe is CVE-2025-44136?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2025-44136 known to be exploited?: 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.