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TI-2024-23939 Aliases CVE-2024-36109

Cross-site Scripting with Markdown rendering in CoCalc

Priority LOW 35CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
Required
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
High · High · Low
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

CoCalc is web-based software that enables collaboration in research, teaching, and scientific publishing. In affected versions the markdown parser allows `<script>` tags to be included which execute when published. This issue has been addressed in commit `419862a9c9879c`. Users are advised to upgrade. There are no known workarounds for this vulnerability.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00406 35th percentileScored 2026-11-07
Fix Fixed cocalc (sagemathinc): 419862a9c9879c

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
sagemathinccocalcbefore 419862a9c9879c419862a9c9879cPatch availableCNA
  • cocalc Vendorsagemathinc Affected before 419862a9c9879c Fixed in 419862a9c9879c Patch available CNA

CPE names CISA-ADP · 1

CPEVersionsRoleVendor
cpe:2.3:a:sagemath:cocalc:-:*:*:*:*:*:*:*not specified by CISA-ADP—Sagemath
  • cpe:2.3:a:sagemath:cocalc:-:*:*:*:*:*:*:* Versions not specified by CISA-ADP — ·Sagemath

Remediation

  • Fix · CNA cocalc (sagemathinc) Fixed in 419862a9c9879c

Timeline

  1. 2026-10-02 Threatist record created from CVE-2024-36109

References

Other 2

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences