CVE-2026-3872 describes a high-severity (CVSS 7.3) flaw in Keycloak, allowing an attacker who controls another path on the same web server to bypass allowed redirect URIs that utilize a wildcard. This vulnerability can lead to the theft of access tokens and subsequent information disclosure, requiring user interaction but having low attack complexity. Currently, there is no evidence of active exploitation, nor are public exploit modules available in common frameworks like Metasploit or Nuclei. Community discussion regarding this CVE is minimal, with only two mentions identified.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
Range not provided by sourceCPE matchmatch criteria | cpe:2.3:a:redhat:build_of_keycloak:-:*:*:*:text-only:*:*:* | ||
26.2CPE matchmatch criteria | cpe:2.3:a:redhat:build_of_keycloak:26.2:*:*:*:text-only:*:*:* | ||
26.2.15CPE matchmatch criteria | cpe:2.3:a:redhat:build_of_keycloak:26.2.15:*:*:*:text-only:*:*:* | ||
26.4CPE matchmatch criteria | cpe:2.3:a:redhat:build_of_keycloak:26.4:*:*:*:text-only:*:*:* | ||
26.4.11CPE matchmatch criteria | cpe:2.3:a:redhat:build_of_keycloak:26.4.11:*:*:*:text-only:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.1 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.