# guardian (Hex) vulnerabilities

4 known vulnerabilities (1 high, 3 medium), with the versions each affects and the releases that fix them.

## At a glance

- Latest release: not known (cve.now hasn't read this package's releases)
- Newest unaffected release: not known without release data
- Registry: https://hex.pm/packages/guardian

## Advisories (4)

### [CVE-2026-55734](https://cve.now/CVE-2026-55734): guardian atom exhaustion in Guardian.Permissions.encode\_permissions!/1

- Severity: Medium 6.9
- Published: Aug 1, 2026
- Affected: from 2.0.0, fixed in 2.4.1; from 2.0.0, fixed in 2.4.1.

### [CVE-2026-55733](https://cve.now/CVE-2026-55733): Atom-table exhaustion denial of service in Guardian permissions AtomEncoding via unbounded atom creation

- Severity: Medium 6.9
- Published: Aug 1, 2026
- Affected: from 2.0.0, fixed in 2.4.1; from 2.0.0, fixed in 2.4.1.

### [CVE-2026-54894](https://cve.now/CVE-2026-54894): Atom-table exhaustion denial of service in Guardian via unbounded atom creation from binary keys

- Severity: Medium 6.9
- Published: Aug 1, 2026
- Affected: from 0.1.0, fixed in 2.4.1; from 0.1.0, fixed in 2.4.1.

### [CVE-2026-55735](https://cve.now/CVE-2026-55735): Guardian.revoke/3 acts on unverified token claims, allowing forged-token session revocation

- Severity: High 8.2
- Published: Aug 1, 2026
- Affected: from 1.0.0, fixed in 2.4.1; from 1.0.0, fixed in 2.4.1.

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