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CVE-2025-59035

Indico vulnerable to Cross-Site Scripting via LaTeX math code

4.6 MediumFix available

Indico is an event management system that uses Flask-Multipass, a multi-backend authentication system for Flask. Prior to version 3.3.8, there is a Cross-Site-Scripting vulnerability when rendering LaTeX math code in contribution or abstract descriptions. Users should to update to Indico 3.3.8 as soon as possible. As a workaround, 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.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
Low
User interaction
Required

What an attacker can affect

Confidentiality
Low
Integrity
Low
Availability
None

Exploit likelihood

0.21%Up 0.2 points since Sep 11, 2025
90%50%10%1%

What each source reports

CVE List Score used 4.6

Indico vulnerable to Cross-Site Scripting via LaTeX math code

Indico is an event management system that uses Flask-Multipass, a multi-backend authentication system for Flask. Prior to version 3.3.8, there is a Cross-Site-Scripting vulnerability when rendering LaTeX math code in contribution or abstract descriptions. Users should to update to Indico 3.3.8 as soon as possible. As a workaround, 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.

Record
CVE-2025-59035
CVSS 3.1
4.6 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N
Weakness
CWE-79
Updated
2026-11-02
EUVDEUVD-2025-27577 4.6

Indico is an event management system that uses Flask-Multipass, a multi-backend authentication system for Flask. Prior to version 3.3.8, there is a Cross-Site-Scripting vulnerability when rendering LaTeX math code in contribution or abstract descriptions. Users should to update to Indico 3.3.8 as soon as possible. As a workaround, 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.

Record
EUVD-2025-27577
CVSS 3.1
4.6 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N
Updated
2026-11-02
GitHub AdvisoriesGHSA-7cf7-9wrr-vrf4 4.6

Indico vulnerable to Cross-Site Scripting via LaTeX math code

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:

Record
GHSA-7cf7-9wrr-vrf4
CVSS 3.1
4.6 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N
Weakness
CWE-79
Updated
2026-11-02
NVD 4.6

Indico is an event management system that uses Flask-Multipass, a multi-backend authentication system for Flask. Prior to version 3.3.8, there is a Cross-Site-Scripting vulnerability when rendering LaTeX math code in contribution or abstract descriptions. Users should to update to Indico 3.3.8 as soon as possible. As a workaround, 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.

Record
CVE-2025-59035
CVSS 3.1
4.6 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N
CVSS 3.1
5.4 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Weakness
CWE-79
Updated
2026-11-02
OSV 4.6

Indico vulnerable to Cross-Site Scripting via LaTeX math code

Indico is an event management system that uses Flask-Multipass, a multi-backend authentication system for Flask. Prior to version 3.3.8, there is a Cross-Site-Scripting vulnerability when rendering LaTeX math code in contribution or abstract descriptions. Users should to update to Indico 3.3.8 as soon as possible. As a workaround, 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.

Record
CVE-2025-59035
CVSS 3.1
4.6 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N
Weakness
CWE-79
Updated
2026-11-02
OSVGHSA-7cf7-9wrr-vrf4 4.6

Indico vulnerable to Cross-Site Scripting via LaTeX math code

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:

Record
GHSA-7cf7-9wrr-vrf4
CVSS 3.1
4.6 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N
Weakness
CWE-79
Updated
2026-11-02
OSVPYSEC-2026-1461 4.6

Indico vulnerable to Cross-Site Scripting via LaTeX math code

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:

Record
PYSEC-2026-1461
CVSS 3.1
4.6 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
indico
PyPI
through 3.3.7
3.3.8
indico
PyPI
before 3.3.8, plus listed versions
0.98-rc10.98.00.98.10.98.20.99
Show 45 moreShow less
1.01.11.1.11.1.21.21.2.11.2.1rc101.2.1rc111.2.1rc21.2.1rc41.2.1rc51.2.1rc61.2.1rc71.2.1rc91.2.21.2.2rc11.9.11.dev101.9.11.dev111.9.11.dev121.9.11.dev131.9.11.dev141.9.11.dev151.9.11.dev161.9.11.dev171.9.11.dev31.9.11.dev41.9.11.dev61.9.11.dev71.9.11.dev81.9.11.dev92.02.0.12.0.22.0.32.0a12.0rc12.0rc22.12.1.12.1.102.1.112.1.22.1.32.1.42.1.5
3.3.8

History

History
RecordedChangedSources
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2025-59035 is a medium vulnerability (CVSS 4.6) in Cern Indico, published September 10, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.21%, the 10th percentile. Fixed in indico 3.3.8.

References

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Left out here: 45 versions. The JSON record has them.

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