CVE-2026-48283: ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Unrestricted Upload of File with Dangerous

This week

CRITICAL 10.0REMOTEDOWNGRADE

CVE-2026-48283 is a critical-severity flaw (CVSS 10.0) affecting coldfusion. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Unrestricted Upload of File with Dangerous Type vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue does not require user interaction. Scope is changed.

Why this priority

Critical severity
CISA SSVC: automatable with total technical impact
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	10.0 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.3% (top 31%)
CISA exploited list	No
Weakness	CWE-434
Published	2026-06-30
Last modified	2026-10-25

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

Last updated 2026-10-25 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-06-30 16:16 UTCPublished CVE record published
2026-10-25 21:10 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.

Exact fixes by distribution

A distro patch exists: prefer upgrading over downgrading.

Fedora 46 · mingw-qt5-qtwebkit · FIXED · 5.212.0-0.46.alpha4.fc46 · FEDORA-2026-46ae541c22 · source

sudo dnf upgrade --advisory=FEDORA-2026-46ae541c22

Fedora ELN · kdominate · FIXED · 26.08.2-2.eln159 · FEDORA-2026-b1d98239fd · source

sudo dnf upgrade --advisory=FEDORA-2026-b1d98239fd

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-2026-48283?

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

Is CVE-2026-48283 being exploited?

CVE-2026-48283 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-2026-48283 affect?

CVE-2026-48283 affects coldfusion. Severity is critical (CVSS 10.0). ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Unrestricted Upload of File with Dangerous Type vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue do

How urgent is CVE-2026-48283?

Priority 60/100. Critical severity; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action

Software pages

Adobe ColdFusion vulnerabilities

Related CVEs

CVE-2026-48282 CRITICAL 10.0 EXPLOITED DOWNGRADE Adobe ColdFusion Path Traversal Vulnerability
CVE-2026-48313 CRITICAL 9.3 DOWNGRADE ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Limitation of a Pathname to a Rest
CVE-2026-48277 CRITICAL 10.0 DOWNGRADE ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability tha
CVE-2026-48281 CRITICAL 10.0 DOWNGRADE ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability tha
CVE-2026-48276 CRITICAL 10.0 DOWNGRADE ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Unrestricted Upload of File with Dangerous

References

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