CVE-2025-23209 is a critical remote code execution (RCE) vulnerability affecting Craft CMS versions 4 and 5, specifically when a security key has been compromised. This flaw carries a high CVSS score of 8.1, indicating a severe impact with complete compromise of confidentiality, integrity, and availability possible. The vulnerability is actively exploited in the wild, as confirmed by its inclusion in CISA's KEV catalog and extensive media coverage. While no public exploit code is readily available, the high community discussion and media attention underscore its significant risk. Patches are available in Craft 5.5.8 and 4.13.8, and users unable to update should rotate security keys as a mitigation.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
> 4.0.0, < 4.13.8CPE matchmatch criteria | cpe:2.3:a:craftcms:craft_cms:*:*:*:*:*:*:*:* | ||
> 5.0.0, < 5.5.8CPE matchmatch criteria | cpe:2.3:a:craftcms:craft_cms:*:*:*:*:*:*:*:* | ||
4.0.0CPE matchmatch criteria | cpe:2.3:a:craftcms:craft_cms:4.0.0:-:*:*:*:*:*:* | ||
4.0.0CPE matchmatch criteria | cpe:2.3:a:craftcms:craft_cms:4.0.0:rc1:*:*:*:*:*:* | ||
4.0.0CPE matchmatch criteria | cpe:2.3:a:craftcms:craft_cms:4.0.0:rc2:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.