CVE-2026-33046: Indico is an event management system that uses Flask-Multipass, a multi-backend authentication system for Flas

Q: How do I fix CVE-2026-33046?

indico: upgrade to 3.3.12. Exact commands for each OS are on this page.

Q: Is CVE-2026-33046 being exploited?

CVE-2026-33046 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-2026-33046 affect?

CVE-2026-33046 affects indico. Severity is high (CVSS 8.8). Indico is an event management system that uses Flask-Multipass, a multi-backend authentication system for Flask. In versions prior to 3.3.12, due to vulnerabilities in TeXLive and obscure LaTeX syntax that allowed circumventing Indico's LaT

This month

HIGH 8.8UPGRADE

CVE-2026-33046 is a high-severity flaw (CVSS 8.8) affecting indico. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Indico is an event management system that uses Flask-Multipass, a multi-backend authentication system for Flask. In versions prior to 3.3.12, due to vulnerabilities in TeXLive and obscure LaTeX syntax that allowed circumventing Indico's LaTeX sanitizer, it is possible to use specially-crafted LaTeX snippets which can read local files or execute code with the privileges of the user running Indico on the server. Note that if server-side LaTeX rende

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.8% (top 44%)
CISA exploited list	No
Weakness	CWE-22, CWE-78
Published	2026-03-23
Last modified	2026-06-17

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

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-03-23 23:17 UTCPublished CVE record published
2026-06-17 10:36 UTCUpdated Record last modified

cern indico UPGRADE

Affected: < 3.3.12

Fixed in: 3.3.12

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 3.3.12 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade indico

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-2026-33046?

indico: upgrade to 3.3.12. Exact commands for each OS are on this page.

Is CVE-2026-33046 being exploited?

CVE-2026-33046 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-2026-33046 affect?

CVE-2026-33046 affects indico. Severity is high (CVSS 8.8). Indico is an event management system that uses Flask-Multipass, a multi-backend authentication system for Flask. In versions prior to 3.3.12, due to vulnerabilities in TeXLive and obscure LaTeX syntax that allowed circumventing Indico's LaT

How urgent is CVE-2026-33046?

Priority 45/100. High severity

Software pages

Flask vulnerabilities

References

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