CVE-2023-36829: Sentry is an error tracking and performance monitoring platform

Routine

MEDIUM 6.8UPGRADE

CVE-2023-36829 is a medium-severity flaw (CVSS 6.8) affecting sentry. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.8 (Medium)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.7% (top 48%)
CISA exploited list	No
Weakness	CWE-863, CWE-942, CWE-697
Published	2023-07-06
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: functional

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2023-07-06 23:15 UTCPublished CVE record published
2026-06-17 06:07 UTCUpdated Record last modified

functional sentry UPGRADE

Affected: >= 23.6.0 and < 23.6.2

Fixed in: 23.6.2

Safe to downgrade to: a release before 23.6.0

1. Check installed version

apt-cache policy sentry || rpm -q sentry || sentry --version

2. UPGRADE to 23.6.2 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade sentry

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade sentry

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 23.6.0 (Debian / Ubuntu)

apt-cache madison sentry sudo apt install sentry=<VERSION_BEFORE_23.6.0> sudo apt-mark hold sentry

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list sentry sudo dnf downgrade sentry-<VERSION_BEFORE_23.6.0> sudo dnf versionlock add sentry

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2023-36829?

sentry: upgrade to 23.6.2. Exact commands for each OS are on this page.

Is CVE-2023-36829 being exploited?

CVE-2023-36829 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2023-36829 affect?

CVE-2023-36829 affects sentry. Severity is medium (CVSS 6.8). 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 hea

How urgent is CVE-2023-36829?

Priority 37/100. No elevated risk signals yet.

Related CVEs

CVE-2026-52794 HIGH 7.5 UPGRADE Sentry is an error tracking and performance monitoring tool
CVE-2026-42354 CRITICAL 9.1 UPGRADE Sentry is an error tracking and performance monitoring tool
CVE-2026-27197 CRITICAL 9.1 UPGRADE Sentry is a developer-first error tracking and performance monitoring tool
CVE-2026-26004 MEDIUM 6.5 UPGRADE Sentry is a developer-first error tracking and performance monitoring tool
CVE-2025-53099 HIGH 7.5 UPGRADE Sentry is a developer-first error tracking and performance monitoring tool

References

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