Cross-site Scripting (XSS) Affecting php8.3-xml-debuginfo package, versions <0:8.3.31-1.amzn2023.0.1


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.05% (15th percentile)

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  • Snyk IDSNYK-AMZN2023-PHP83XMLDEBUGINFO-16884852
  • published27 May 2026
  • disclosed10 May 2026

Introduced: 10 May 2026

NewCVE-2026-6735  (opens in a new tab)
CWE-79  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 php8.3-xml-debuginfo to version 0:8.3.31-1.amzn2023.0.1 or higher.
This issue was patched in ALAS2023-2026-1728.

NVD Description

Note: Versions mentioned in the description apply only to the upstream php8.3-xml-debuginfo package and not the php8.3-xml-debuginfo package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2023 relevant fixed versions and status.

In PHP versions 8.2.* before 8.2.31, 8.3.* before 8.3.31, 8.4.* before 8.4.21, 8.5.* before 8.5.6, due to improper sanitation of user data, it allows an attacker to compose an URL, which will cause the target to execute arbitrary JavaScript code (XSS) on the target's machine when the target is viewing the PHP-FPM status page.

CVSS Base Scores

version 3.1