CVE-2026-6735

🔶 medium

Summary

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 Score

6.1

Medium

EPSS Score

0.2

Exploit Probability

Published Date

2026-05-10

First Seen: 2026-05-11

📊 Relative Risk Intelligence

This CVE is Lower Risk - more severe than 37.7% of all 350,976 vulnerabilities in our database.

#218,748

Below average severity

Severity Percentile

🎯 CISA SSVC Assessment Updated: May 11, 2026

🔍 Exploitation Status

None

No known exploits

⚙️ Automatable

Requires human interaction

💥 Technical Impact

Partial

Limited system impact

🏆 Discovered By

conradfd@proton.me (reporter)

SSVC data provided by CISA

Last Modified 2026-07-24

Source NVD 🔗

CVSS Vector 3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CVSS Vector 4.0

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:P/AU:Y/R:X/V:X/RE:L/U:Amber

CWE IDs (Weakness Types)

CWE-79

📦 Affected Products 4

Vendor	Product	Status	Affected Versions
php	php	Affected	> 8.2.0 < 8.2.31
php	php	Affected	> 8.3.0 < 8.3.31
php	php	Affected	> 8.4.0 < 8.4.21
php	php	Affected	> 8.5.0 < 8.5.6

🔗 References 1

https://github.com/php/php-src/security/advisories/G...

Exploit Vendor Advisory

🔗 Related CVEs 6

CVE ID	Severity	CVSS	EPSS	Summary	Published
CVE-2026-17543	⛔ critical	9.8	0.5	Improper escaping of backslashes in attacker-provided parameters would allow for trivial SQL injection in PHP versions ...	2026-07-30
CVE-2026-17544	⛔ critical	9.8	0.5	Attacker-provided inputs to bccomp() could lead to an out-of-bounds write with stack and heap corruption in PHP versions...	2026-07-30
CVE-2026-7260	🔶 medium	5.5	0.2	Circular symbolic links in phar archives could lead to unbounded recursion, exhausting the C stack and crashing the PHP ...	2026-07-30
CVE-2026-14355	🔶 medium	5.6	0.3	In PHP versions 8.2.* before 8.2.32, 8.3.* before 8.3.32, 8.4.* before 8.4.23, 8.5.* before 8.5.8, the AES-WRAP-PAD algo...	2026-07-03
CVE-2025-14179	⛔ critical	9.8	0.4	In PHP versions 8.2.* before 8.2.31, 8.3.* before 8.3.31, 8.4.* before 8.4.21, and 8.5.* before 8.5.6, the PDO Firebird ...	2026-05-10
CVE-2026-6722	⛔ critical	9.8	0.9	In PHP versions 8.2.* before 8.2.31, 8.3.* before 8.3.31, 8.4.* before 8.4.21, and 8.5.* before 8.5.6, the SOAP extensio...	2026-05-10

These CVEs affect the same products