CVE-2026-35482: alf.io is an open source ticket reservation system for conferences, trade shows, workshops, and meetups

Q: How do I fix CVE-2026-35482?

alf: upgrade to 2.0-M5-2606. Exact commands for each OS are on this page.

Q: Is CVE-2026-35482 being exploited?

CVE-2026-35482 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-35482 affect?

CVE-2026-35482 affects alf. Severity is high (CVSS 8.0). alf.io is an open source ticket reservation system for conferences, trade shows, workshops, and meetups. Prior to version 2.0-M5-2606, a sandbox escape vulnerability in the alf.io extension script engine allows an authenticated administrato

Q: How urgent is CVE-2026-35482?

Priority 38/100. High severity; Public exploit reference

Routine

HIGH 8.0UPGRADE

CVE-2026-35482 is a high-severity flaw (CVSS 8.0) affecting alf. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

alf.io is an open source ticket reservation system for conferences, trade shows, workshops, and meetups. Prior to version 2.0-M5-2606, a sandbox escape vulnerability in the alf.io extension script engine allows an authenticated administrator to execute arbitrary operating system commands on the server. The extension system is intended to execute restricted JavaScript in a sandboxed Rhino environment; however, a combination of an unguarded injecte

Why this priority

High severity
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	8.0 (High)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	High
User interaction	None
EPSS exploit chance	0.3% (top 79%)
CISA exploited list	No
Weakness	CWE-863
Published	2026-06-02
Last modified	2026-08-12

Publisher (CNA): GitHub, Inc. · Vendor: alf

Last updated 2026-08-12 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-06-02 23:16 UTCPublished CVE record published
2026-08-12 18:02 UTCUpdated Record last modified

alf alf UPGRADE

Affected: < 2.0-M5-2606

Fixed in: 2.0-M5-2606

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy alf || rpm -q alf || alf --version

2. UPGRADE to 2.0-M5-2606 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade alf

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade alf

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-35482?

alf: upgrade to 2.0-M5-2606. Exact commands for each OS are on this page.

Is CVE-2026-35482 being exploited?

CVE-2026-35482 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-35482 affect?

CVE-2026-35482 affects alf. Severity is high (CVSS 8.0). alf.io is an open source ticket reservation system for conferences, trade shows, workshops, and meetups. Prior to version 2.0-M5-2606, a sandbox escape vulnerability in the alf.io extension script engine allows an authenticated administrato

How urgent is CVE-2026-35482?

Priority 38/100. High severity; Public exploit reference

References

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