CVE-2026-45721

critical

Published 2026-05-26 · Modified 2026-05-19

💬 Discuss on Community ✚ Propose mitigation

CVSS v3

9.0

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

CVSS v4 NEW

—

not yet in upstream

VIR risk

9.0

Description

Algernon: handler.lua discovery walks parent directories above the server root

Predictions

Exploit likelihood

93%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

Package impact

Ecosystem	Package	Vulnerable	Fixed
Go	github.com/xyproto/algernon	`<1.17.7`	`1.17.7`
GO	github.com/xyproto/algernon	`<= 1.17.6`	`1.17.7`

References

CWEs

CWE-20 CWE-426 CWE-552

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.