CVE-2026-21269

Victim-browser script execution via stored form input

Published Aug 11, 2026 · Updated Aug 11, 2026

Stored XSS in Adobe ColdFusion 2023.0.22 and earlier and 2025.0.11 and earlier allows local users to run scripts in a victim's browser. Adobe has not identified the affected form fields or disclosed where stored values bypass output encoding before browser rendering. Low-privileged access is required to store the payload, and a victim must browse to the affected page before the script runs in that browser.

CVSS severity4.6
Medium
EPSS probability0.50%
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 Adobe ColdFusion 2023.0.22 and earlier and 2025.0.11 and earlier allows local users to run scripts in a victim's browser. Adobe has not identified the affected form fields or disclosed where stored values bypass output encoding before browser rendering. Low-privileged access is required to store the payload, and a victim must browse to the affected page before the script runs in that browser.

The record

CVE
CVE-2026-21269
Published
Aug 11, 2026
Updated
Aug 11, 2026
Vendor
Adobe
Product
Adobe ColdFusion
Classifications
CWE-79, T1059.007
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 11, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 11, 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 <=2023.0.22
  2. Affected versionversion=0 <=2025.0.11

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Adobe · Adobe ColdFusionversion=0 <=2023.0.22; version=0 <=2025.0.11

Published CVSS scores

4.6Adobe Systems IncorporatedCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007JavaScript/JScript

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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