CVE-2023-36829

Sentry CORS misconfiguration vulnerability

MEDIUM
5.4
CVSS Score
Published: July 6, 2023 at 10:08 PM UTC
Updated: June 17, 2026 at 06:07 AM UTC
3 products affected across 3 vendorsSentrySentrySentry

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Severity
MEDIUM5.4
Exploit prediction
EPSS 0.7%
SSVC
No known exploit

Description

Sentry is an error tracking and performance monitoring platform. Starting in version 23.6.0 and prior to version 23.6.2, the Sentry API incorrectly returns the `access-control-allow-credentials: true` HTTP header if the `Origin` request header ends with the `system.base-hostname` option of Sentry installation. This only affects installations that have `system.base-hostname` option explicitly set, as it is empty by default. Impact is limited since recent versions of major browsers have cross-site cookie blocking enabled by default. However, this flaw could allow other multi-step attacks. The patch has been released in Sentry 23.6.2.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

23.6.0 ≤ v < 23.6.2
Affected range stops below 23.6.2, so it looks safe — our inference, not a vendor statement
v < 23.6.2
Affected range stops below 23.6.2, so it looks safe — our inference, not a vendor statement
23.6.0 ≤ v < 23.6.223.6.0
Affected range stops below 23.6.2, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-863CWE-942CWE-697

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