CVE-2025-67634

User-assisted script execution via imported JSON

Published Dec 12, 2025 · Updated Dec 12, 2025

Cross-site scripting in CISA's Supplier Response Web Tool before 2025-12-11 allows attackers to run JavaScript via imported JSON. Imported JSON text fields are loaded into the page without neutralizing embedded script, which the browser executes when the user clicks Next. Exploitation requires a user to import an attacker-supplied questionnaire file and advance the form, enabling script execution in that browser context.

CVSS severity4.6
Medium
EPSS probability0.19%
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 CISA's Supplier Response Web Tool before 2025-12-11 allows attackers to run JavaScript via imported JSON. Imported JSON text fields are loaded into the page without neutralizing embedded script, which the browser executes when the user clicks Next. Exploitation requires a user to import an attacker-supplied questionnaire file and advance the form, enabling script execution in that browser context.

The record

CVE
CVE-2025-67634
Published
Dec 12, 2025
Updated
Dec 12, 2025
Vendor
Cybersecurity and Infrastructure Security Agency (CISA)
Product
Software Acquisition Guide: Supplier Response Web Tool
Classifications
CWE-79, T1203
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 12, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 12, 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 <2025-12-11

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Cybersecurity and Infrastructure Security Agency (CISA) · Software Acquisition Guide: Supplier Response Web Toolversion=0 <2025-12-11

Published CVSS scores

4.6Cybersecurity and Infrastructure Security AgencyCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
6.1National Vulnerability DatabaseCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
4.4Cybersecurity and Infrastructure Security AgencyCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/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)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

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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