CVE-2026-25498: Craft has a potential authenticated Remote Code Execution via malicious attached Behavior
Noroxi assessment
Priority: Monitor (action score 34/100)
- The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
- Probability of exploitation in the next 30 days: 1.1% (FIRST EPSS); higher than 65.9% of all records.
- Anyone who can reach it over the internet can trigger it. Administrator privileges are required. No user action is required. No special conditions are required; it is repeatable.
- Fixed version: craftcms cms 5.8.22.
Low priority for now. Upgrade to craftcms cms 5.8.22 or later.
Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it
Primary sources: NVD · CVE.org · FIRST EPSS
Craft is a platform for creating digital experiences. In versions 4.0.0-RC1 through 4.16.17 and 5.0.0-RC1 through 5.8.21, a Remote Code Execution (RCE) vulnerability exists in Craft CMS where the assembleLayoutFromPost() function in src/services/Fields.php fails to sanitize user-supplied configuration data before passing it to Craft::createObject(). This allows authenticated administrators to inject malicious Yii2 behavior configurations that execute arbitrary system commands on the server. This vulnerability represents an unpatched variant of the behavior injection vulnerability addressed in CVE-2025-68455, affecting different endpoints through a separate code path. This vulnerability is fixed in 5.8.22.
- Published
- Feb 9, 2026
- Updated
- Jun 17, 2026
- EPSS
- 1.1% · 65th percentile
- CWE
- CWE-470
Report tools
Action score
34
Monitor
Low priority for now.
- CVSS
- 34 / 40 · 8.6 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 1.1%
CISA SSVC decision
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
Vulnrichment: CISA's decision-tree inputs.
CNA vs NVD score
- NVD
- —
- CNA · GitHub_M
- 8.6
- NVD has not scored this yet; the score shown is the CNA’s.
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
Get told when this record changes
- Not in KEV: no record of exploitation in the wild
- No public exploit code on record
- A fix has been released
If any of these changes, we'll tell you in the daily email digest.
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Noroxi analysis
What does it mean in your environment?
The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.
We use this product, ask for helpAffected systems
Is your version affected?
Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.
| Vendor | Product | CPE |
|---|---|---|
| craftcms | craft cms | cpe:2.3:a:craftcms:craft_cms |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- craftcms craft cmsafter 4.0.0 · before 4.16.18
- craftcms craft cmsafter 5.0.0 · before 5.8.22
- craftcms craft cms4.0.0
- craftcms craft cms5.0.0
Versions reported by the vendor
Affected version ranges reported by the assigning authority (GitHub_M). Independent of NVD's CPE analysis and usually ahead of it.
craftcms cms
- >= 5.0.0-RC1, < 5.8.22, >= 4.0.0-RC1, < 4.16.18affected
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Packagist | craftcms/cms | from 4.0.0-RC1 · before 4.16.18 | 4.16.18 |
| Packagist | craftcms/cms | from 5.0.0-RC1 · before 5.8.22 | 5.8.22 |
Same product
craftcms: all recordsOther highest-scoring records for the same primary product.
- CVE-2025-32432Craft CMS Allows Remote Code ExecutionKEV100Now
- CVE-2024-56145RCE when PHP `register_argc_argv` config setting is enabled in craftcms/cmsKEV96Now
- CVE-2025-23209Potential RCE with a compromised security key in craft/cmsKEV68This week
Published before and after this one in the same product
- ← EarlierCVE-2026-25496Feb 9, 2026 · Craft has a stored XSS in Number Prefix & Suffix Fields19Monitor
- ← EarlierCVE-2026-25497Feb 9, 2026 · Craft has a GraphQL Asset Mutation Privilege Escalation34Monitor
- Later →CVE-2026-27126Feb 23, 2026 · Craft CMS has Stored XSS in Table Field via "HTML" Column Type23Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| craftcms cms | 5.8.22 · description | Vendor (CNA) |
| Packagist:craftcms/cms | 4.16.18 | Package registry (OSV) |
| Packagist:craftcms/cms | 5.8.22 | Package registry (OSV) |
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
No history yet (it accumulates with the daily EPSS job).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
- CVE-2025-6845535 days apartCraft CMS vulnerable to potential authenticated Remote Code Execution via malicious attached Behavior34Monitor
- CVE-2026-3226335 days apartCraft CMS vulnerable to behavior injection RCE via EntryTypesController34Monitor
- CVE-2026-3226435 days apartCraft CMS vulnerable to behavior injection RCE ElementIndexesController and FieldsController34Monitor
- CVE-2026-3315743 days apartCraft CMS: Potential authenticated Remote Code Execution via malicious attached Behavior34Monitor
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- Administrator privileges are required.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- Integrity
- Availability
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- High
- User interaction
- None
- Scope
- X
Weakness class (CWE)
CWE-470 · Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection')CVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
nvd-secondary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
ATT&CK techniques
—
Change log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
Show all references (1 more)Show less
Vendor advisories and official records. Exploit/PoC links are deliberately left out.