CVE-2026-21269: ColdFusion is affected by a stored Cross-Site Scripting (XSS) vulnerability that could be abused by a low-priv

Routine

MEDIUM 4.6DOWNGRADE

CVE-2026-21269 is a medium-severity flaw (CVSS 4.6) affecting coldfusion. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

ColdFusion is affected by a stored Cross-Site Scripting (XSS) vulnerability that could be abused by a low-privileged attacker to inject malicious scripts into vulnerable form fields. Malicious JavaScript may be executed in a victim's browser when they browse to the page containing the vulnerable field. Scope is changed.

Why this priority

No elevated risk signals yet

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	4.6 (Medium)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.6% (top 53%)
CISA exploited list	No
Weakness	CWE-79
Published	2026-08-11
Last modified	2026-09-08

Publisher (CNA): Adobe Systems Incorporated · Vendor: adobe

Last updated 2026-09-08 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-08-11 17:17 UTCPublished CVE record published
2026-09-08 20:17 UTCUpdated Record last modified

adobe coldfusion DOWNGRADE

Affected: 2023 · 2023 update1 · 2023 update10 · 2023 update11 · 2023 update12 · 2023 update13 · 2023 update14 · 2023 update15

Fixed in: no fixed release known

Safe to downgrade to: a release before 2023

1. Check installed version

apt-cache policy coldfusion || rpm -q coldfusion || coldfusion --version

2. No fixed release: DOWNGRADE to a release before 2023 (Debian / Ubuntu)

apt-cache madison coldfusion sudo apt install coldfusion=<VERSION_BEFORE_2023> sudo apt-mark hold coldfusion

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list coldfusion sudo dnf downgrade coldfusion-<VERSION_BEFORE_2023> sudo dnf versionlock add coldfusion

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-21269?

coldfusion: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2026-21269 being exploited?

CVE-2026-21269 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-21269 affect?

CVE-2026-21269 affects coldfusion. Severity is medium (CVSS 4.6). ColdFusion is affected by a stored Cross-Site Scripting (XSS) vulnerability that could be abused by a low-privileged attacker to inject malicious scripts into vulnerable form fields. Malicious JavaScript may be executed in a victim's browse

How urgent is CVE-2026-21269?

Priority 28/100. No elevated risk signals yet.

Software pages

Adobe ColdFusion vulnerabilities

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References

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