CVE-2021-38319Network attack vector

Reflected XSS via unsanitized PHP_SELF path

Published Sep 9, 2021 · Updated May 5, 2025

Reflected XSS in More From Google 0.0.2 and earlier allows remote attackers to execute arbitrary scripts via a crafted request path. The plugin prints the PHP_SELF server variable into a form action in morefromgoogle.php without output encoding, causing path content to enter the returned HTML. Exploitation requires a victim to follow a crafted URL and executes the injected script in that user's browser context.

CVSS severity6.1
Medium
EPSS probability0.90%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reflected XSS in More From Google 0.0.2 and earlier allows remote attackers to execute arbitrary scripts via a crafted request path. The plugin prints the PHP_SELF server variable into a form action in morefromgoogle.php without output encoding, causing path content to enter the returned HTML. Exploitation requires a victim to follow a crafted URL and executes the injected script in that user's browser context.

The record

CVE
CVE-2021-38319
Published
Sep 9, 2021
Updated
May 5, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 9, 2021CVE publishedPublication date reported by the CVE source.
  2. May 5, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.1WordfenceCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A: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-79CWE-79 Cross-site Scripting (XSS)
T1189Drive-by Compromise

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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