GHSA-4xqm-4p72-87h6: sentry (CVE-2023-36829)

Package	Ecosystem	Affected	Fixed in
sentry	PyPI	>=23.6.0, <23.6.2	23.6.2

Machine-written summary

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

Sentry versions 23.6.0 up to but not including 23.6.2 are affected. The Sentry API wrongly returns the access-control-allow-credentials header when the Origin header ends with the configured system.base-hostname, which only applies to self-hosted installations that set that option explicitly. Browser cross-site cookie blocking limits the impact, but an attacker could chain this into other attacks. Upgrade to Sentry 23.6.2 or later; no workarounds are listed.

Written 5 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
6.8	Medium	3.1	CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N	CNA (GitHub_M)

CISA KEV Not listed.
EPSS 0.0067, the 51st percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

31 Oct 2026, 14:35 UTC First seen by agentprime
31 Oct 2026, 14:35 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.