Path Traversal in indico (CVE-2026-33046)
Summary
Path traversal in indico (CVE-2026-33046). Risk of unauthorized operations or information disclosure. Exploitable via XELATEX_PATH. Mitigation: upgrade to 3.3.12 or later.
Original description
The description as published by the source.
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.
Source: OSV.dev (Open Source Vulnerabilities) NVD GitHub Advisory OSV
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2026-33046 has been found in indico.
Attackers can target a specific entry point like XELATEX_PATH over the network to misuse the product.
Risk of unauthorized operations or information disclosure.
What to do: upgrade indico to 3.3.12 or later.
If unsure, ask your IT team or search "indico CVE-2026-33046" on the vendor's site.
CVE-2026-33046 (indico) — CWE-22
Attack surface: XELATEX_PATH / indico.conf / podman / None
Patched: 3.3.12 — apply immediately
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.
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
Path traversal (CWE-22) exists in indico. Attackers reach the vulnerable code path via XELATEX_PATH.
Check the vendor advisory for the affected versions of indico. Attack surface: XELATEX_PATH / indico.conf / podman / None.
Severity: ?. Risk of unauthorized operations or information disclosure.
Update to 3.3.12.
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.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r 'indico' . against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
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1Identify exposure identify
grep -r 'indico' . | grep -v node_modulesリポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で
indicoを grep し、稼働しているサービス・バージョンを把握する。 -
2Apply temporary workaround mitigate
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.パッチが適用されるまでの応急処置として、Remove the
XELATEX_PATHsetting fromindico.conf(or comment it out or set it toNone) and restart theindico-uwsgiandindico-celeryservices to disable LaTeX functionality. を実施。回避策の副作用 (機能低下) を確認した上で。 -
3Apply patch patch
Upgrade indico to 3.3.12ステージング環境で 3.3.12 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスを含めること。
-
4Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
Affected packages
References
- advisory github.com
- advisory nvd.nist.gov
- advisory github.com
- package github.com
- patch github.com
- patch github.com
- patch github.com
- patch github.com
- web github.com