Medium severity · published Sep 14, 2026
CVE-2026-82781
Cross-site scripting vulnerability exists in CONPROSYS nano Series
5.4
CVSS
0.2%
EPSS
No
On KEV
Description
Cross-site scripting vulnerability exists in CONPROSYS nano Series. If this vulnerability is exploited, an arbitrary script may be executed on a logged-in user's web browser.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 15% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PR
Programmable Remote I/O Coupler Unit (Software PLC Type) CPSN-PCB271-S1-041 · Contec Co., Ltd.
before 1.61 · source: vendor
RI
Remote I/O Coupler Unit (EtherNet/IP Adapter) CPSN-EOB471EI-[]1 · Contec Co., Ltd.
before 1.02 · source: vendor
RI
Remote I/O Coupler Unit (Server Type) CPSN-MCB271-* · Contec Co., Ltd.
before 1.82 · source: vendor
Affected product
PR
Programmable Remote I/O Coupler Unit (Software PLC Type) CPSN-PCB271-S1-041
Contec Co., Ltd.
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-82781
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-82781
jvn.jp
https://jvn.jp/en/vu/JVNVU96551518/
www.contec.com
https://www.contec.com/api/downloadlogger?download=/-/media/Contec/support/security-info/2026/contec_security_cps_26091000_en.pdf
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