CASCACascade Atlas

Evidence dossier

CVE-2025-23209

Potential RCE with a compromised security key in craft/cms

64.3–79.6Priority evidence range
As known Jul 19, 2026, 5:00 AM UTCgen-56ccdaf9

Normalized restatement

Craft is a flexible, user-friendly CMS for creating custom digital experiences on the web and beyond. This is an remote code execution (RCE) vulnerability that affects Craft 4 and 5 installs where your security key has already been compromised. Anyone running an unpatched version of Craft with a compromised security key is affected. This vulnerability has been patched in Craft 5.5.8 and 4.13.8. Users who cannot update to a patched version, should rotate their security keys and ensure their privacy to help migitgate the issue.

State
PUBLISHED
Published
Jan 18, 2025
Updated
Feb 26, 2026
Evidence coverage
85%
CISA KEVCatalog member

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

FIRST EPSS4.71%

2026-07-18 · v2026.06.15 · percentile 90.8%

Source stateNo scored conflict

Distinct CVSS assessments remain side by side; none are averaged.

Source comparison

Who said what

CISA-ADPindependent enrichment
container

CISA ADP Vulnrichment

GitHub_Moriginal assertion
container

Potential RCE with a compromised security key in craft/cms

CISA KEVoriginal assertion
observed_exploitation

Craft CMS Code Injection Vulnerability

FIRST EPSSoriginal assertion
model_probability

Probability 0.047140000000; percentile 0.908160000000

Applicability

Cited product scope

Trace impact →
craftcmscms
[{"status": "affected", "version": ">= 5.0.0-RC1, < 5.5.5"}, {"status": "affected", "version": ">= 4.0.0-RC1, < 4.13.8"}]unknown
Unknown vendorUnknown product
cpe:2.3:a:craftcms:craft_cms:*:*:*:*:*:*:*:*; start excluding 4.0.0; end excluding 4.13.8supported
Unknown vendorUnknown product
cpe:2.3:a:craftcms:craft_cms:*:*:*:*:*:*:*:*; start excluding 5.0.0; end excluding 5.5.8supported
Unknown vendorUnknown product
cpe:2.3:a:craftcms:craft_cms:4.0.0:-:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:craftcms:craft_cms:4.0.0:rc1:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:craftcms:craft_cms:4.0.0:rc2:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:craftcms:craft_cms:4.0.0:rc3:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:craftcms:craft_cms:5.0.0:-:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:craftcms:craft_cms:5.0.0:rc1:*:*:*:*:*:*supported

Assessments

CVSS by origin

8.1
nvd@nist.govCVSS 3.1 · role PrimaryCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
8.0
security-advisories@github.comCVSS 3.1 · role SecondaryCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H
8.1
GitHub_MCVSS 3.1 · role unknownCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H

Limitations and unknowns

  • KEV membership is authoritative for the catalog, not proof of exposure in any environment.
  • EPSS is a dated model probability and not an individual-environment prediction.
  • Affected or fixed status applies only to the exact cited product and version scope; unresolved scope remains unknown.
  • NVD-carried upstream facts remain derivative and are not independent corroboration.
  • Only NVD metrics validated under the generation-bound calculator are Public Priority eligible; direct CVE record metrics remain display-only.
  • NVD CVSS source eligibility is closed: NVD-authored, exact record-source, or registered same-CVE container origin; unmapped sources remain display-only.
  • Factor D is unknown in Public Core because no accepted canonical mapping-obligation ledger is present.
  • Core replay supports the active and immediately prior generation; retrospective valid-at replay is deferred.