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CVE-2026-53661 malach-it CVE debrief

CVE-2026-53661 is a high-severity vulnerability in the Boruta authorization server. Prior to version 0.9.1, Boruta's session cookies and remember-me cookie were set without the Secure attribute. This allowed potential attackers to intercept these cookies over an unencrypted connection if users accessed the same Boruta origin over plaintext HTTP. An attacker could then reuse a valid session or remember-me cookie to impersonate the affected user.

Vendor
malach-it
Product
boruta-server
CVSS
HIGH 8.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-11
Original CVE updated
2026-06-11
Advisory published
2026-06-11
Advisory updated
2026-06-11

Who should care

Users of Boruta authorization server versions prior to 0.9.1 should be aware of this vulnerability. Specifically, deployments where users could reach the same Boruta origin over plaintext HTTP are affected. The affected components include boruta_web, boruta_identity, and boruta_admin.

Technical summary

The issue was fixed in commit 18691c655164635066aa113003a3cd87f6ed11cd, released as part of version 0.9.1. The patch sets `secure: true` and `same_site: 'Lax'` on configured session cookies for boruta_web, boruta_identity, and boruta_admin, and sets `secure: true` on the identity remember-me cookie.

Defensive priority

HIGH

Recommended defensive actions

  • Until upgrading to a release containing the fix, terminate or reject plaintext HTTP before requests reach Boruta.
  • Enforce HTTPS-only access at the reverse proxy or load balancer.
  • Enable HSTS for Boruta domains.
  • If cookie exposure is suspected, rotate SECRET_KEY_BASE and BORUTA_SESSION_COOKIE_SIGNING_SALT, then require users to authenticate again.
  • Upgrade to a version containing commit 18691c655164635066aa113003a3cd87f6ed11cd, or apply the patch manually.

Evidence notes

The CVE-2026-53661 vulnerability has a CVSS score of 8.8 and is classified as HIGH severity. The affected cookies include the shared session cookie (defaulting to _boruta_web_key) and the identity remember-me cookie (defaulting to _boruta_identity_web_user_remember_me).

Sources and references

Verified primary and authoritative sources

  • CVE-2026-53661 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-53661

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-53661 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-53661

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.