CVE-2026-52794

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.5 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.3%, top 82% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
7.5
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.5Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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 v3
7.5
EG Score
7.5(medium)
EPSS
18.3%
KEV
Not listed

Published

June 24, 2026

Last Modified

June 27, 2026

Advisory Details (2)

Auto-updated Jun 25, 2026
Patch available. Sources: github, github_pr.
github Patch Available

Inefficient Regular Expression Complexity in Sentry · Advisory · getsentry/sentry · GitHub

https://github.com/getsentry/sentry/security/advisories/GHSA-jjqr-wqg2-p856
github_pr

fix(grouping): Fix hostname regex bugs, take 2

Fix merged in getsentry/sentry PR #116587 on 2026-06-01 — awaiting tagged release

https://github.com/getsentry/sentry/pull/116587

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 24× in last 7d / 55× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-12 02:46 UTCEG score recompute
  2. 2026-07-11 13:35 UTCEG score recompute
  3. 2026-07-11 08:27 UTCEPSS rescore
  4. 2026-07-11 08:27 UTCEPSS rescore
  5. 2026-07-11 00:24 UTCEG score recompute
  6. 2026-07-10 10:57 UTCEG score recompute
  7. 2026-07-09 21:40 UTCEG score recompute
  8. 2026-07-09 19:10 UTCEPSS rescore
  9. 2026-07-09 19:10 UTCEPSS rescore
  10. 2026-07-09 08:28 UTCEG score recompute
  11. 2026-07-08 19:17 UTCEG score recompute
  12. 2026-07-08 15:16 UTCEPSS rescore
  13. 2026-07-08 15:16 UTCEPSS rescore
  14. 2026-07-08 06:05 UTCEG score recompute
  15. 2026-07-07 16:52 UTCEG score recompute
  16. 2026-07-07 13:46 UTCEPSS rescore
  17. 2026-07-07 13:46 UTCEPSS rescore
  18. 2026-07-07 02:42 UTCEG score recompute
  19. 2026-07-06 16:27 UTCEPSS rescore
  20. 2026-07-06 16:27 UTCEPSS rescore
  21. 2026-07-06 13:31 UTCEG score recompute
  22. 2026-07-06 02:23 UTCEPSS rescore
  23. 2026-07-06 00:18 UTCEG score recompute
  24. 2026-07-05 11:05 UTCEG score recompute
  25. 2026-07-05 02:30 UTCEPSS rescore
Show 30 more
  1. 2026-07-04 21:53 UTCEG score recompute
  2. 2026-07-04 08:43 UTCEG score recompute
  3. 2026-07-04 06:31 UTCEPSS rescore
  4. 2026-07-03 19:31 UTCEG score recompute
  5. 2026-07-03 06:19 UTCEG score recompute
  6. 2026-07-02 17:02 UTCEG score recompute
  7. 2026-07-02 03:49 UTCEG score recompute
  8. 2026-07-01 15:07 UTCEPSS rescore
  9. 2026-07-01 14:37 UTCEG score recompute
  10. 2026-07-01 01:26 UTCEG score recompute
  11. 2026-06-30 23:22 UTCEPSS rescore
  12. 2026-06-30 12:07 UTCEG score recompute
  13. 2026-06-29 22:54 UTCEG score recompute
  14. 2026-06-29 14:06 UTCEPSS rescore
  15. 2026-06-29 14:06 UTCEPSS rescore
  16. 2026-06-29 09:43 UTCEG score recompute
  17. 2026-06-28 20:30 UTCEG score recompute
  18. 2026-06-28 14:07 UTCEPSS rescore
  19. 2026-06-28 07:18 UTCEG score recompute
  20. 2026-06-28 04:56 UTCEPSS rescore
  21. 2026-06-28 04:56 UTCEPSS rescore
  22. 2026-06-27 18:07 UTCEG score recompute
  23. 2026-06-27 04:56 UTCEG score recompute
  24. 2026-06-27 03:08 UTCEPSS rescore
  25. 2026-06-26 15:45 UTCEG score recompute
  26. 2026-06-26 02:29 UTCEG score recompute
  27. 2026-06-25 13:49 UTCEPSS rescore
  28. 2026-06-25 13:18 UTCEG score recompute
  29. 2026-06-25 00:07 UTCEG score recompute
  30. 2026-06-25 00:03 UTCNVD updatefirst tracked

Frequently asked(5)

What is CVE-2026-52794?
CVE-2026-52794 is a high vulnerability published on June 24, 2026. 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…
When was CVE-2026-52794 disclosed?
CVE-2026-52794 was first published in the National Vulnerability Database on June 24, 2026, with the most recent update on June 27, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-52794 actively exploited?
CVE-2026-52794 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 18.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-52794?
CVE-2026-52794 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-52794?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-52794, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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