CVE-2026-82788Network attack vector

Arbitrary script execution in logged-in browsers

Published Sep 14, 2026 · Updated Sep 14, 2026

Cross-site scripting in CONTEC CPSL-08P1EN firmware before 2.3.10 allows remote attackers to run scripts in a logged-in user's browser. CONTEC identifies the settings screen as the locus but has not disclosed the affected input, output context, or missing neutralization step. Exploitation requires user interaction and can redirect the browser or execute arbitrary script in its logged-in context.

CVSS severity6.1
Medium
EPSS probability0.15%
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 CONTEC CPSL-08P1EN firmware before 2.3.10 allows remote attackers to run scripts in a logged-in user's browser. CONTEC identifies the settings screen as the locus but has not disclosed the affected input, output context, or missing neutralization step. Exploitation requires user interaction and can redirect the browser or execute arbitrary script in its logged-in context.

The record

CVE
CVE-2026-82788
Published
Sep 14, 2026
Updated
Sep 14, 2026
Vendor
CONTEC Co., Ltd.
Product
CONPROSYS CPSL-08P1EN IO-Link Master
Classifications
CWE-79
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 14, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 14, 2026Record 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 <2.3.10

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

CONTEC Co., Ltd. · CONPROSYS CPSL-08P1EN IO-Link Masterversion=0 <2.3.10

Published CVSS scores

5.1JPCERT/CCCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
6.1JPCERT/CCCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
6.1CONTEC Co., Ltd.CVSS: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-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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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