How severe is CVE-2026-26004?

CVE-2026-26004 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2026-26004 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (15th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-26004?

CVE-2026-26004 affects Sentry. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-26004?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-26004 have an EU (EUVD) identifier?

Yes. CVE-2026-26004 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-12673.

When was CVE-2026-26004 published?

CVE-2026-26004 was published on 2026-03-18 and last updated on 2026-06-17.

CVE-2026-26004

CVE-2026-26004 is a medium-severity vulnerability in Sentry with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-639.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v4: 5.7
EPSS exploit prediction: 0% (15th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-12673
Weakness: CWE-639
Affected product: Sentry
Published: 2026-03-18
Last modified: 2026-06-17

Description

Sentry is a developer-first error tracking and performance monitoring tool. Versions prior to 26.1.0 have a cross-organization Insecure Direct Object Reference (IDOR) vulnerability in Sentry's GroupEventJsonView endpoint. Version 26.1.0 patches the issue.

Frequently asked questions

What is CVE-2026-26004?: Sentry is a developer-first error tracking and performance monitoring tool. Versions prior to 26.1.0 have a cross-organization Insecure Direct Object Reference (IDOR) vulnerability in Sentry's GroupEventJsonView endpoint. Version 26.1.0 patches the issue.
How severe is CVE-2026-26004?: CVE-2026-26004 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2026-26004 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (15th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-26004?: CVE-2026-26004 affects Sentry. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-26004?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-26004 have an EU (EUVD) identifier?: Yes. CVE-2026-26004 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-12673.
When was CVE-2026-26004 published?: CVE-2026-26004 was published on 2026-03-18 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:sentry:sentry:*:*:*:*:*:*:*:*

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