Security readout for executives and security teams
Plain-English summary
This flaw affects Red Hat build of Keycloak login flows. An attacker could prepare a login session and lure a user to a crafted link, potentially taking over that user’s account after SSO completes. Administrative accounts are in scope if they use the affected flow.
Executive priority
Treat as a high-priority identity platform issue. It can lead to account takeover, including privileged accounts, but current provided evidence does not establish active exploitation.
Technical view
CVE-2026-7507 is a Keycloak session fixation issue in login-actions endpoints, especially /login-actions/restart. The sources describe inadequate CSRF protection and cookie ownership validation for session handles. Exploitation requires network access, no prior authentication, and user interaction, with high impact to confidentiality, integrity, and availability.
Likely exposure
Organizations running Red Hat build of Keycloak 26.2 or 26.4 packages listed as affected are the relevant exposure group. Internet-facing or broadly accessible SSO deployments carry higher business risk.
Exploitation context
The provided sources do not show CISA KEV listing or confirmed active exploitation. The described attack requires tricking a victim into visiting a crafted link and depends on the affected OIDC login flow.
Researcher notes
Evidence is strongest for Red Hat build of Keycloak package status and the described session fixation path. Public source details are limited; avoid assuming upstream Keycloak scope beyond the listed Red Hat affected products.
Mitigation direction
- Apply the relevant Red Hat RHSA updates for affected Keycloak builds.
- Check Red Hat CVE and CSAF VEX guidance for exact fixed package status.
- Prioritize patching SSO deployments used by administrators or privileged users.
- Review exposure of Keycloak login endpoints while vendor fixes are deployed.
- Monitor for suspicious use of /login-actions/restart in authentication logs.
Validation and detection
- Inventory Red Hat build of Keycloak 26.2 and 26.4 deployments.
- Compare installed packages against the Red Hat affected and unaffected status.
- Confirm RHSA-2026:19594 through RHSA-2026:19597 updates are applied where relevant.
- Review authentication logs for unusual restart endpoint activity.
- Verify privileged accounts cannot be reached through unpatched affected realms.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-290: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2026-7507 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 7.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
SSVC decision data
CVSS vector scores
2 official scoresWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H1.65.9redhatCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H1.65.9redhat-SADPVulnerability scoring details
Base CVSS 3.1 score
7.5HighVector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Base CVSS 3.1 score
7.5HighVector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- ADP timelineredhat-SADP
Reported to Red Hat.
- Source timelineredhat
Reported to Red Hat.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- ADP timelineredhat-SADP
Made public.
- Source timelineredhat
Made public.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
- 2026-04-30T14:57:56.441Z: Reported to Red Hat.
- 2026-05-19T10:51:31.418Z: Made public.
Source materials
- CVE List V5 sourceCVE List V5
- RHSA-2026:19594CVE reference, redhat · vendor-advisory, x_refsource_REDHAT
- RHSA-2026:19595CVE reference, redhat · vendor-advisory, x_refsource_REDHAT
- RHSA-2026:19596CVE reference, redhat · vendor-advisory, x_refsource_REDHAT
- RHSA-2026:19597CVE reference, redhat · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2026-7507CVE reference, redhat · vdb-entry, x_refsource_REDHAT
- RHBZ#2464145CVE reference, redhat · issue-tracking, x_refsource_REDHAT
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-7507.jsonCVE reference, redhat-SADP · x_sadp-csaf-vex
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Authentication Bypass by Spoofing
Authentication Bypass by Spoofing represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.