CVE-2026-21273 json
ColdFusion | Improper Input Validation (CWE-20)
published 2026-08-11 2 mo ago modified 2026-08-28 2 mo ago also EUVD-2026-56535
- cvss
- 8.7
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.9%
- EPSS 0.9% chance of exploitation in 30 days, percentile 58%
- public exploits
- 0
- none known
Summary
is affected by an Improper Input Validation vulnerability that could result in privilege escalation. A low-privileged attacker could exploit this vulnerability to gain unauthorized read and write access. Exploitation of this issue requires user interaction in that a victim must open a malicious file. Scope is changed.
Patch / fix
- Adobe ColdFusion 2025 2025.0.12
- Adobe ColdFusion 2023 2023.0.23
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 2 mo ago
Exploit prediction
0.86% chance of exploitation in the next 30 days, higher than 58% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 8.7 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N |
| NVD | 3.1 | 8.7 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N |
Affected products
- Adobe ColdFusion 2025
- Adobe ColdFusion 2023
Classification
- Weakness
-
- CWE-20 Improper Input Validation
References
-
helpx.adobe.com
/security/products/coldfusion/apsb26-90.html
vendor-advisory
Sources
- CVE List CVE-2026-21273
- NVD CVE-2026-21273
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.