CVE-2025-43717Network attack vector

Reflected XSS via unencoded test parameter output

Published Apr 17, 2025 · Updated Apr 17, 2025

Reflected XSS in PEAR HTTP_Request2 before 2.7.0 allows remote attackers to execute script through exposed network-test endpoints. The getparameters.php and postparameters.php helpers serialize GET or POST arrays and echo them without HTML encoding. Exploitation requires the tests/_network directory to be web-served, causing crafted markup to execute in the requesting browser's origin.

CVSS severity5.4
Medium
EPSS probability0.33%
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 PEAR HTTP_Request2 before 2.7.0 allows remote attackers to execute script through exposed network-test endpoints. The getparameters.php and postparameters.php helpers serialize GET or POST arrays and echo them without HTML encoding. Exploitation requires the tests/_network directory to be web-served, causing crafted markup to execute in the requesting browser's origin.

The record

CVE
CVE-2025-43717
Published
Apr 17, 2025
Updated
Apr 17, 2025
Vendor
Alexey Borzov
Product
HTTP_Request2
Classifications
CWE-531, CWE-79, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 17, 2025CVE publishedPublication date reported by the CVE source.
  2. Apr 17, 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=0 <2.7.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Alexey Borzov · HTTP_Request2version=0 <2.7.0

Published CVSS scores

5.4MITRECVSS:3.1/AV:N/AC:H/PR:N/UI:N/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.

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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-531Inclusion of Sensitive Information in Test Code
CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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