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VulnerabilityPublished

CVE-2026-34456: reviactyl panel · Improper Access Control

Affects reviactyl panelSource CVE Database V5

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Not known to be exploited · CVSS 9.1 Critical : upgrade to 26.2.0-beta.5 as a priority.

Data as of 30 Oct 2026, 06:59 UTC

CVSS 3.1 base score
9.1Critical
How severe the flaw is on the 0–10 CVSS scale.

Contested

Critical score, yet low EPSS after six months
EPSS
0.4% chance of exploitation in 30 days – higher than 40% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 26.2.0-beta.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 1 Apr 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.

What to do

Upgrade reviactyl panel to 26.2.0-beta.5.

Affected software

ProductAffectedFixed in
reviactylpanelAffected
  • >=26.2.0-beta.1 <26.2.0-beta.5
Fixed in
  • 26.2.0-beta.5

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Upgrade Reviactyl panel to version 26.2.0-beta.5 or later, where this vulnerability has been patched. No other mitigations are indicated or required as the fix addresses the root cause.

Description

A critical improper access control vulnerability (CWE-284) exists in the Reviactyl panel versions 26.2.0-beta.1 through before 26.2.0-beta.5. The flaw is in the OAuth authentication flow, where social accounts are automatically linked based solely on matching email addresses. An attacker controlling a social account with the victim's email can gain full access to the victim's panel account without needing the victim's password. This leads to a full account takeover without prior authentication.

References

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