[Git][security-tracker-team/security-tracker][master] CVE-2026-27205/flask: mark bullseye as postponed

[Carlos Henrique Lima Melara (@charles)]

Carlos Henrique Lima Melara pushed to branch master at Debian Security Tracker / security-tracker


Commits:
a2ff435f by Carlos Henrique Lima Melara at 2026-02-24T22:07:30-03:00
CVE-2026-27205/flask: mark bullseye as postponed

Three conditions are required to trigger the CVE (per upstream [1]):

1. The application must be hosted behind a caching proxy that does not
   ignore responses with cookies.
2. The application does not set a Cache-Control header to indicate that
   a page is private or should not be cached.
3. The application accesses the session in a way that does not access
   the values, only the keys, and does not mutate the session.

Therefore it highly depend on the use case and generelly it's hard to
trigger.

[1] https://github.com/pallets/flask/security/advisories/GHSA-68rp-wp8r-4726

- - - - -


1 changed file:

- data/CVE/list


Changes:

=====================================
data/CVE/list
=====================================
@@ -1211,6 +1211,7 @@ CVE-2026-27205 (Flask is a web server gateway interface (WSGI) web application f
 	- flask <unfixed> (bug #1128620)
 	[trixie] - flask <no-dsa> (Minor issue)
 	[bookworm] - flask <no-dsa> (Minor issue)
+	[bullseye] - flask <postponed> (Minor issue, hard to trigger)
 	NOTE: https://github.com/pallets/flask/security/advisories/GHSA-68rp-wp8r-4726
 	NOTE: Fixed by: https://github.com/pallets/flask/commit/089cb86dd22bff589a4eafb7ab8e42dc357623b4 (3.1.3)
 CVE-2026-27203 (eBay API MCP Server is an open source local MCP server providing AI as ...)



View it on GitLab: https://salsa.debian.org/security-tracker-team/security-tracker/-/commit/a2ff435fef7458a97c5f6ff2bf537139c3b25f0e

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