CVE-2026-33046
What it is
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 rendering is not in use (ie `XELATEX_PATH` was not set in `indico.conf`), this vulnerability does not apply. It is recommended to update to Indico 3.3.12 as soon as possible. It is also strongly recommended to enable the containerized LaTeX renderer (using `podman`), which isolates it from the rest of the system. As a workaround, 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.
At a glance
- Exploitability
- Can be exploited over the network with a low-privilege account. High risk of data exposure, data tampering, service disruption.
- Exploit odds
- 0.8% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 0.8% in the next 30 days (EPSS).
- Severity: 7.7 HIGH (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 0.8% · EPSS, next 30 days
- Weakness
- CWE-22 · Path traversal
- Record status
- Analyzed
Affected
- Cern Indico < 3.3.12
Attack profile CVSS 4.0 · 7.7
- Attack vector
- Network
- Complexity
- Low
- Attack requirements
- Present
- Privileges needed
- Low
- User interaction
- None
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Raw vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2026-33046.md and follow it. Check whether this project is affected by CVE-2026-33046. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- https://github.com/indico/indico/commit/0adb70f0ed66e129361d447868f5f3eb90dc5e96
- https://github.com/indico/indico/commit/1dbb12525b3de14229bf4d1ae192988068f975f6
- https://github.com/indico/indico/commit/5f24d23ce9c4b0e4b68b3d0b58987a948fc57c8a
- https://github.com/indico/indico/commit/fb169ced710c30cf792ce4b9f48688db0633cfd8
- https://github.com/indico/indico/releases/tag/v3.3.12
- https://github.com/indico/indico/security/advisories/GHSA-rm2q-f7jv-3cfp
References
- https://github.com/indico/indico/commit/0adb70f0ed66e129361d447868f5f3eb90dc5e96
- https://github.com/indico/indico/commit/1dbb12525b3de14229bf4d1ae192988068f975f6
- https://github.com/indico/indico/commit/5f24d23ce9c4b0e4b68b3d0b58987a948fc57c8a
- https://github.com/indico/indico/commit/fb169ced710c30cf792ce4b9f48688db0633cfd8
- https://github.com/indico/indico/releases/tag/v3.3.12
- https://github.com/indico/indico/security/advisories/GHSA-rm2q-f7jv-3cfp