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Not in CISA KEV
MEDIUM severity

CVE-2025-59035 — indico

MEDIUM

CVE-2025-59035 is a medium-severity (CVSS 4.6) Cross-site Scripting (XSS) vulnerability in indico. A fix is available for indico — see the affected versions and patch details below.

Indico vulnerable to Cross-Site Scripting via LaTeX math code

Also known asGHSA-7cf7-9wrr-vrf4PYSEC-2026-1461
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Oct 28, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

No confirmed exploitation observed yet

  • 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-2025-59035.

EPSS Exploitation Probability

via FIRST.org ↗
0.2%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs11th percentile — riskier than 11% of all scored CVEsHighest risk
0.00%0.24%0.47%0.71%0.0%0.2%Apr 26Aug 26Oct 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

1 pkg affected
🐍indico

Real-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

Impact

There is a Cross-Site-Scripting vulnerability when rendering LaTeX math code in contribution or abstract descriptions.

Patches

You should to update to Indico 3.3.8 as soon as possible. See the docs for instructions on how to update.

Workarounds

Only let trustworthy users create content on Indico.

Note that a conference doing a Call for Abstracts actively invites external speakers (who the organizers may not know and thus cannot fully trust) to submit content, hence the need to update to a a fixed version ASAP in particular when using such workflows.

For more information

If you have any questions or comments about this advisory:

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🐍PyPIindicoall versions3.3.8pip install --upgrade 'indico==3.3.8'

Affected Products

1 product · 1 configurations
Application
indicocern
< 3.3.8
range

Detection & mitigation playbook

Open-source dependency

  1. Detect

    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.

  2. Fix

    Update indico to 3.3.8 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2025-59035 is resolved across your whole dependency graph.

  3. Workarounds

    Escape or sanitise the affected output on the server side rather than relying on client-side filtering, and add a Content-Security-Policy that blocks inline script execution so injected markup cannot run even if it reaches the page.

Frequently Asked Questions

### Impact There is a Cross-Site-Scripting vulnerability when rendering LaTeX math code in contribution or abstract descriptions. ### Patches You should to update to [Indico 3.3.8](https://github.com/indico/indico/releases/tag/v3.3.8) as soon as possible. See [the docs](https://docs.getindico.io/en/stable/installation/upgrade/) for instructions on how to update. ### Workarounds Only let trustworthy users create content on Indico. Note that a conference doing a Call for Abstracts actively invites external speakers (who the organizers may not know and thus cannot fully trust) to submit conte
O3 Security · Impact-Aware SCA

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CVE-2025-59035: indico — Fixed in 3.3.8