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Vulnerability record · CVE-2023-44355 · published 17 November 2023

CVE-2023-44355: Adobe ColdFusion improper input validation security feature bypass

Adobe · Coldfusion

Adobe ColdFusion 2023.5 and earlier and 2021.11 and earlier contain an improper input validation flaw (CWE-20) that allows a security feature bypass. The issue is remotely reachable without authentication but requires user interaction, and it only affects a minor integrity feature.

4.3 CVSS 3.1 Medium EPSS 47% · top 1.2% CWE-20 · Improper input validation
4.3CVSS 3.1 base score
47%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

Adobe ColdFusion versions 2023.5 (and earlier) and 2021.11 (and earlier) are affected by an Improper Input Validation vulnerability that could result in a Security feature bypass. An unauthenticated attacker could leverage this vulnerability to impact a minor integrity feature. Exploitation of this issue does require user interaction.

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

Automated analysis

Generated by VULONE's analysis model from the NVD record, CISA KEV and EPSS data on 20 September 2026. Confidence: medium.

medium priorityCVSS rates it medium (4.3) with only minor integrity impact and required user interaction, though the high EPSS percentile warrants prompt patching.

What it is

Adobe ColdFusion 2023.5 and earlier and 2021.11 and earlier contain an improper input validation flaw (CWE-20) that allows a security feature bypass. The issue is remotely reachable without authentication but requires user interaction, and it only affects a minor integrity feature.

Impact

An attacker can bypass a security feature and cause limited, minor integrity impact; there is no confidentiality or availability impact per the CVSS vector.

Attack surface

Reachable over the network (AV:N) with no privileges required (PR:N), but exploitation requires user interaction (UI:R), so a victim must be induced to perform an action.

Exploitation

Not listed in CISA KEV and no public exploit reference is provided; EPSS is high at roughly 0.47 probability (98.8th percentile), indicating elevated predicted exploitation activity despite the lack of confirmed in-the-wild use.

What to do

  • Apply the Adobe ColdFusion update referenced in advisory APSB23-52 to move off 2023.5/2021.11 and earlier.
  • If immediate patching is not possible, restrict network access to ColdFusion administrative and application endpoints to trusted sources.
  • Treat the flaw as requiring user interaction: harden against phishing and social engineering that could trigger the vulnerable path.
  • Review ColdFusion security configuration and confirm relevant security features are enabled and functioning after patching.

Detection

  • Monitor ColdFusion server logs for anomalous or malformed requests that could indicate input validation bypass attempts.
  • Alert on unexpected changes to security-relevant configuration or feature state on ColdFusion hosts.
  • Correlate user-driven request patterns with post-request integrity changes to spot abuse of the bypass.

This assessment is produced automatically and is not human-reviewed. Verify against the vendor advisory before acting on it.

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://helpx.adobe.com/security/products/coldfusion/apsb23-52.html Release NotesVendor Advisory
https://helpx.adobe.com/security/products/coldfusion/apsb23-52.html Release NotesVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2023-44355), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.