GHSA-c2f9-4jmm-v45m: shopware/storefront (CVE-2024-27917)

Package	Ecosystem	Affected	Fixed in
shopware/storefront	Packagist	>=6.5.8.0, <6.5.8.7	6.5.8.7
shopware/platform	Packagist	>=6.5.8.0, <6.5.8.7	6.5.8.7

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

Shopware's storefront and platform packages from 6.5.8.0 before 6.5.8.7 cache 404 pages with a session cookie included, so a guest's browser can receive a session cookie that is cached and shared with other visitors. An attacker needs only to have a 404 page served to them, and the impact is that a customer can be logged out or have their cart cleared. Upgrade to version 6.5.8.7. Using Redis for sessions is a workaround, though the source gives few details on how to configure it.

Written 3 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
7.5	High	3.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N	CNA (GitHub_M)

CISA KEV Not listed.
EPSS 0.0061, the 49th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

31 Oct 2026, 14:26 UTC First seen by agentprime
31 Oct 2026, 14:26 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.