CVE-2025-48883Network attack vector

Cross-site scripting via unencoded CSS selectors

Published May 30, 2025 · Updated May 30, 2025

Cross-site scripting in Chrome PHP before 1.14.0 allows remote attackers to execute JavaScript through a crafted CSS selector. CssSelector stores the expression verbatim and interpolates it inside a quoted document.querySelectorAll call, allowing quotes to escape the intended string. Exploitation requires an application to pass attacker-controlled selector text for browser processing, exposing data and actions available to the page context.

CVSS severity5.3
Medium
EPSS probability0.45%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in Chrome PHP before 1.14.0 allows remote attackers to execute JavaScript through a crafted CSS selector. CssSelector stores the expression verbatim and interpolates it inside a quoted document.querySelectorAll call, allowing quotes to escape the intended string. Exploitation requires an application to pass attacker-controlled selector text for browser processing, exposing data and actions available to the page context.

The record

CVE
CVE-2025-48883
Published
May 30, 2025
Updated
May 30, 2025
Vendor
Chrome PHP
Product
Chrome PHP
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 30, 2025CVE publishedPublication date reported by the CVE source.
  2. May 30, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 1.14.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Chrome PHP · Chrome PHPversion=< 1.14.0

Published CVSS scores

5.3GitHub, Inc.CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007Command and Scripting Interpreter: JavaScript/JScript

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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