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PatchSiren cyber security CVE debrief

CVE-2026-12863 pretix CVE debrief

CVE-2026-12863 is a medium-severity vulnerability (CVSS Score: 5.1) in Venueless' social login functionality. An unvalidated redirect could be exploited for phishing attacks using trusted domains. This issue requires attention from defenders of Venueless implementations to prevent potential phishing attacks. The vulnerability was published on June 22, 2026, and no changes have been made since then.

Vendor
pretix
Product
Venueless
CVSS
MEDIUM 5.1
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-22
Original CVE updated
2026-06-23
Advisory published
2026-06-22
Advisory updated
2026-06-23

Who should care

Defenders and administrators of Venueless social login implementations should be aware of this vulnerability. Developers and security teams need to assess the risk and apply necessary patches or mitigations to prevent phishing attacks.

Technical summary

The vulnerability (CVE-2026-12863) is caused by an unvalidated redirect in Venueless' social login functionality. This could allow attackers to exploit trusted domains for phishing attacks. The CVSS score is 5.1, indicating a medium severity level. The vulnerability was published on June 22, 2026.

Defensive priority

Medium priority due to potential for phishing attacks via trusted domains in Venueless social login functionality.

Recommended defensive actions

  • Review and apply patches or updates provided by Venueless for social login functionality.
  • Implement input validation and proper redirect handling in social login features.
  • Monitor for suspicious activity related to social login redirects.
  • Educate users about potential phishing risks and verify domain authenticity.

Evidence notes

The primary evidence for this vulnerability comes from the CVE record and NVD detail pages. The vulnerability affects Venueless social login functionality, allowing unvalidated redirects that could be exploited for phishing. Verify the authenticity of domains used in social login redirects and monitor for suspicious activity.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-12863 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-12863

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

  • CVE-2026-12863 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-12863

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

Supplemental references

  • Source reference

    Unverified legacy reference

    URL: https://github.com/venueless/venueless/security/advisories/GHSA-m87f-7c4r-w4p3

    655498c3-6ec5-4f0b-aea6-853b334d05a6

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.