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CVE-2026-73312

XenForo < 2.3.13 Refresh Token Replay via Expired Access Token

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 2.3.13
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: no
  • Technical impact: total

Summary

XenForo before 2.3.13 contains a refresh token replay vulnerability that allows attackers to reuse a refresh token multiple times by exploiting the failure to mark tokens as consumed when the parent access token has expired. Attackers can repeatedly submit the same refresh token to generate additional independent token pairs, achieving persistent unauthorized access for the token's full lifetime.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: no · Technical impact: total

  3. Record last updated

Affected versions

  • XenForo XenForo

    fixed in 2.3.13

References 5

xenforo.com

bombobombone.github.io

GitHub · BomboBombone/CVE-2026-73312

vulncheck.com