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Vulnerability record · CVE-2026-52794 · published 24 June 2026

CVE-2026-52794: Sentry inefficient regular expression (redos) vulnerability

Sentry · Sentry

Sentry is an error tracking and performance monitoring tool. From 24.4.0 until 26.5.2, a Regular Expression Denial of Service (ReDoS) vulnerability exists in Sentry's event ingestion pipeline, where a regex applied to attacker-controlled fields on incoming events can be made to consume disproportionate CPU time. This vulnerability is fixed in 26.5.2.

7.5 CVSS 3.1 High EPSS 0.47% · top 62.1% CWE-1333 · Inefficient regular expression (ReDoS)
7.5CVSS 3.1 base score
0.47%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
27 Jun 2026Last modified by NVD

Description

Sentry is an error tracking and performance monitoring tool. From 24.4.0 until 26.5.2, a Regular Expression Denial of Service (ReDoS) vulnerability exists in Sentry's event ingestion pipeline, where a regex applied to attacker-controlled fields on incoming events can be made to consume disproportionate CPU time. This vulnerability is fixed in 26.5.2.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/getsentry/sentry/pull/116587 Issue TrackingPatch
https://github.com/getsentry/sentry/security/advisories/GHSA-jjqr-wqg2-p856 MitigationVendor Advisory

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Source: NIST National Vulnerability Database (record CVE-2026-52794), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.