Unscored severity · published Oct 22, 2026
CVE-2026-51954
An issue in Webasyst Framework 4.0.3 and before allows a remote attacker to execute arbitrary code via a crafted OAuth authorization URL with an arbitrary redirect_uri
New
–
CVSS
0.5%
EPSS
No
On KEV
Description
An issue in Webasyst Framework 4.0.3 and before allows a remote attacker to execute arbitrary code via a crafted OAuth authorization URL with an arbitrary redirect_uri.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 43% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-51954
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-51954
github.com
https://github.com/Envincion/CVE-2026-51954
github.com
https://github.com/webasyst/webasyst-framework/issues/389
support.webasyst.com
https://support.webasyst.com/forum/48658/unvalidated-redirect_uri-in-oauth-authorization-flow-allows-authorization-code-interception-and-permanent-api-access/