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High CVSS 8.2

CVE-2026-21279

Adobe Coldfusion

is affected by an Improper Input Validation vulnerability that could result in a Security feature bypass. An attacker could leverage this vulnerability to bypass security measures and gain unauthorized read and limited write access. Exploitation of this issue does not require user interaction.

What this means

Exposure
Exploitable remotely over the network, without authentication and with no action from the victim.
Impact
An attacker can read sensitive data and alter some data.
Weakness
The application accepts input without checking it, opening the door to unintended behaviour.
Likelihood
Its EPSS score stays low: nothing points to imminent exploitation, which is no reason to leave it unpatched.

What to doFold into the next patch cycle. Start with the instances exposed to the internet.

Read automatically from the CVSS vector, the weakness type (CWE) and the EPSS score. The technical description above remains the one published by NIST.

Published
11 August 2026
CVSS
8.2 (v3.1) CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
EPSS
0.48% probability of exploitation within 30 days · above 39% of all CVEs
Weakness
CWE-20
Sources
nvd
References

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