PatchSiren

PatchSiren cyber security CVE debrief

CVE-2026-59713 Leantime CVE debrief

The CVE record for CVE-2026-59713 was published on 2026-07-06T21:16:58.930Z and has not been modified since then. The NVD entry is currently Deferred. Leantime contains an OIDC login CSRF vulnerability in the verifyState() method that unconditionally returns true without validating state parameters. Attackers can craft malicious callback URLs with attacker-controlled authorization codes to perform session fixation, logging victims in as the attacker. This vulnerability has a CVSS score of 8.6 and is classified as HIGH. Users of Leantime should be aware of this vulnerability and take steps to mitigate it.

Vendor
Leantime
Product
Unknown
CVSS
HIGH 8.6
CISA KEV
Not listed in stored evidence
Original CVE published
2026-07-06
Original CVE updated
2026-09-17
Advisory published
2026-07-06
Advisory updated
2026-09-17

Who should care

Users of Leantime should be aware of this vulnerability and take steps to mitigate it. This includes reviewing and updating Leantime to the latest version, implementing additional security measures to prevent CSRF attacks, and monitoring for suspicious activity. The vulnerability has a CVSS score of 8.6 and is classified as HIGH.

Technical summary

Leantime contains an OIDC login CSRF vulnerability in the verifyState() method that unconditionally returns true without validating state parameters. Attackers can craft malicious callback URLs with attacker-controlled authorization codes to perform session fixation, logging victims in as the attacker. The vulnerability has a CVSS score of 8.6 and is classified as HIGH. The CVE record was published on 2026-07-06T21:16:58.930Z and has not been modified since then. The NVD entry is currently Deferred.

Defensive priority

High

Recommended defensive actions

  • Review and update Leantime to the latest version
  • Implement additional security measures to prevent CSRF attacks
  • Monitor for suspicious activity
  • Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.
  • Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance.
  • Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed.
  • Check relevant monitoring, detection, and logs for exposed assets that need extra review.

Evidence notes

The CVE record was published on 2026-07-06T21:16:58.930Z and has not been modified since then. The NVD entry is currently Deferred. The vulnerability has a CVSS score of 8.6 and is classified as HIGH. The CVE record and NVD entry provide limited information about the vulnerability, and defenders should verify the affected scope and severity with the vendor.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-59713 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-59713

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

  • CVE-2026-59713 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-59713

    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.