CVE-2026-35536

Summary

In Tornado before 6.5.5, cookie attribute injection could occur because the domain, path, and samesite arguments to .RequestHandler.set_cookie were not checked for crafted characters.

Affected Software

Weaknesses

• CWE-159: CWE-159 Improper Handling of Invalid Use of Special Elements

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: yes
  • Technical Impact: partial

References

• https://github.com/tornadoweb/tornado/security/advisories/GHSA-78cv-mqj4-43f7
• https://github.com/tornadoweb/tornado/releases/tag/v6.5.5

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