CVE-2026-33046 — indico
Fix: indico/indico@0adb70fCVE-2026-33046 is a Path Traversal vulnerability in indico. A fix is available for indico — see the affected versions and patch details below.
Indico discloses local files resulting in Remote Code Execution through LaTeX injection
Exploitation Status
No confirmed exploitation observed yet
- A successful exploit gives an attacker total control of the affected component, not partial access.
- CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.
Exploitation and automatability from CISA’s SSVC triage for CVE-2026-33046.
EPSS Exploitation Probability
EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.
Real-World Exposure
indicoReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects PyPI packages — download data is not available via public APIs for these ecosystems.
Description
[!NOTE] If server-side LaTeX rendering is not in use (ie
XELATEX_PATHwas not set inindico.conf), this vulnerability does not apply.
Impact
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.
Patches
It is recommended to update to Indico 3.3.12 as soon as possible. See the docs for instructions on how to update.
It is also strongly recommended to enable the containerized LaTeX renderer (using podman), which isolates it from the rest of the system. See the docs for details - it is very easy and from now on the only recommended/supported way of using LaTeX.
Workarounds
Remove the XELATEX_PATH setting from indico.conf (or comment it out or set it to None) and restart the indico-uwsgi and indico-celery services to disable LaTeX functionality.
For more information
For any questions or comments about this advisory:
- Open a thread in the forum
- Send an email to [email protected]
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐍PyPI | indico | all versions | 3.3.12pip install --upgrade 'indico==3.3.12' |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for indico, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update indico to 3.3.12 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2026-33046 is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like CVE-2026-33046 can be triaged on real exposure rather than presence alone.
Tailored to CVE-2026-33046. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is CVE-2026-33046 in your dependencies?
O3 Security finds CVE-2026-33046 across PyPI dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.