CVE-2025-2274

Stored browser script execution via unsanitized CGI input

Published Mar 16, 2026 · Updated Mar 16, 2026

Stored XSS in Forcepoint Web Security On-prem 8.5.6 and earlier allows remote attackers to inject scripts through block-page CGI endpoints. The /cgi-bin/blockOptions.cgi and /cgi-bin/blockpage.cgi handlers store user input without sanitizing it before later page generation. An attacker must reach the adjacent network and induce a user to load the stored content, enabling browser-side data access or changes.

CVSS severity4.8
Medium
EPSS probability0.16%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in Forcepoint Web Security On-prem 8.5.6 and earlier allows remote attackers to inject scripts through block-page CGI endpoints. The /cgi-bin/blockOptions.cgi and /cgi-bin/blockpage.cgi handlers store user input without sanitizing it before later page generation. An attacker must reach the adjacent network and induce a user to load the stored content, enabling browser-side data access or changes.

The record

CVE
CVE-2025-2274
Published
Mar 16, 2026
Updated
Mar 16, 2026
Vendor
Forcepoint
Product
Web Security On-prem
Classifications
CWE-79, CAPEC-592, T1203
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 16, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 16, 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 <=8.5.6

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Forcepoint · Web Security On-premversion=0 <=8.5.6

Published CVSS scores

4.8ForcepointCVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
6.1NVDCVSS: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)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CAPEC-592Stored XSS
T1203Exploitation for Client Execution

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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