CVE-2026-35536
mediumpriority · track · 21EPSS 0.002 · 15 %ileDEEUFRRUUSEPSS · scored 2026-10-27
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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 4.9–7.2
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (19)
Products and version ranges known to be affected.
advisories (5)
Vendor and ecosystem advisories describing this.
- WID-SEC-W-2026-2933Splunk SOAR: Mehrere SchwachstellenDeutsch2026-08-19csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Splunk SOAR ausnutzen, um Sicherheitsvorkehrungen zu umgehen, um Informationen offenzulegen, um Dateien zu manipulieren, um einen SQL-Injection Angriff durchzuführen, um einen Cross-Site Scripting Angriff durchzuführen, und um beliebigen Programmcode auszuführen.
- GHSA-78cv-mqj4-43f7Tornado has incomplete validation of cookie attributes2026-03-11ghsa · osvUS
Values passed to the `domain`, `path`, and `samesite` arguments of `RequestHandler.set_cookie` were not completely validated in versions of Tornado prior to 6.5.5. In particular, semicolons would be allowed, which could be used to inject attacker-controlled values for other cookie attributes.
- GHSA-fqwm-6jpj-5wxcTornado has cookie attribute injection via .RequestHandler.set_cookie2026-04-03ghsa · osvUS
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.
- CERTFR-2026-AVI-1378Multiples vulnérabilités dans les produits IBMFrançais2026-10-23vendor · certfrFR
- PYSEC-2026-22872026-04-03vendor · osvUS
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.
also known as (8)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (7)
External citations — patches, advisories, analysis.
- https://github.com/tornadoweb/tornado/releases/tag/v6.5.5cnnvd
- https://github.com/tornadoweb/tornado/security/advisories/GHSA-78cv-mqj4-43f7cnnvd
- https://www.tornadoweb.org/en/stable/Patchcnnvd
- https://github.com/tornadoweb/tornado/releases/tag/v6.5.5enisa_euvd
- https://github.com/tornadoweb/tornado/security/advisories/GHSA-78cv-mqj4-43f7enisa_euvd
- https://github.com/tornadoweb/tornado/releases/tag/v6.5.5Productnvd
- https://github.com/tornadoweb/tornado/security/advisories/GHSA-78cv-mqj4-43f7Vendor Advisorynvd
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