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CVE-2026-11956 TwiN CVE debrief

A vulnerability was determined in TwiN gatus 5.36.0. Impacted is the function setSessionCookie of the file security/oidc.go of the component OIDC Session Cookie Handler. Executing a manipulation can lead to sensitive cookie without secure attribute. The attack can be launched remotely. This attack is characterized by high complexity. The exploitability is considered difficult.

Vendor
TwiN
Product
gatus
CVSS
MEDIUM 6.3
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 TwiN gatus 5.36.0 should be aware of this vulnerability and take necessary precautions.

Technical summary

The vulnerability is located in the setSessionCookie function of the security/oidc.go file in the OIDC Session Cookie Handler component of TwiN gatus 5.36.0. An attacker can remotely exploit this vulnerability, which has a high complexity and is considered difficult to exploit.

Defensive priority

MEDIUM

Recommended defensive actions

  • Apply patches or updates as recommended by the vendor.
  • Review and update security configurations for the OIDC Session Cookie Handler.

Evidence notes

The reported GitHub issue was closed with the label 'not planned'.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-11956 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-11956

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

  • CVE-2026-11956 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-11956

    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.