CVE-2026-62237

MEDIUMPre-NVD 6.56.5—
EchelonGraph scoreHIGH confidence

Score 6.5 from GitHub Security Advisory published 2026-07-17. a secondary CVSS source baseline 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this weekElevated
6.5
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 6.5Exploit: NoneExposed: 0

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

Grav before 2.0.4 contains a regular expression denial of service (ReDoS) vulnerability in the regex_replace filter and function, which are allowlisted in the Twig content sandbox. When Twig processing in page content is enabled (security.twig_content.process_enabled: true, disabled by default), an authenticated page editor can supply a catastrophically backtracking PCRE pattern that is passed directly to PHP's preg_replace(), causing unbounded CPU consumption and denial of service to the web server process.

CVSS v3
6.5
EG Score
6.5(high)
EG Risk
45(Track)
EG Risk 45/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity65% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
16.3%
KEV
Not listed

Published

July 17, 2026

Last Modified

July 21, 2026

Advisory Details (2)

Auto-updated Jul 17, 2026
🔬 Proof of concept available. Patch available. Sources: github.
generic

Grav < 2.0.4 ReDoS via regex_replace in Sandbox | Advisories | VulnCheck

https://www.vulncheck.com/advisories/grav-redos-via-regex-replace-in-sandbox
github Patch Available🟡 PoC Available

Authenticated ReDoS via regex_replace in Twig Sandbox · Advisory · getgrav/grav · GitHub

https://github.com/getgrav/grav/security/advisories/GHSA-37f3-6p89-6qr9

Vendor Advisories for CVE-2026-62237(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 18× in last 7d / 18× 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. 2026-07-23 14:18 UTCEPSS rescore
  2. 2026-07-23 14:18 UTCEPSS rescore
  3. 2026-07-23 03:21 UTCEG score recompute
  4. 2026-07-23 00:18 UTCEG score recompute
  5. 2026-07-23 00:18 UTCGHSA enrichment
  6. 2026-07-22 14:08 UTCEPSS rescore
  7. 2026-07-22 14:08 UTCEPSS rescore
  8. 2026-07-21 15:25 UTCEPSS rescore
  9. 2026-07-21 15:25 UTCEPSS rescore
  10. 2026-07-20 17:08 UTCEPSS rescore
  11. 2026-07-19 14:31 UTCEPSS rescore
  12. 2026-07-19 02:29 UTCEPSS rescore
  13. 2026-07-18 14:42 UTCEG score recompute
  14. 2026-07-18 14:42 UTCGHSA enrichment
  15. 2026-07-18 10:04 UTCEPSS rescore
  16. 2026-07-17 06:53 UTCGHSA enrichment
  17. 2026-07-17 00:24 UTCEG score recompute
  18. 2026-07-17 00:22 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-62237?
CVE-2026-62237 is a medium vulnerability published on July 17, 2026. Grav before 2.0.4 contains a regular expression denial of service (ReDoS) vulnerability in the regexreplace filter and function, which are allowlisted in the Twig content sandbox. When Twig processing in page content is enabled (security.twigcontent.processenabled: true, disabled by default), an…
When was CVE-2026-62237 disclosed?
CVE-2026-62237 was first published in the National Vulnerability Database on July 17, 2026, with the most recent update on July 21, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-62237 actively exploited?
CVE-2026-62237 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 16.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-62237?
CVE-2026-62237 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2026-62237?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-62237, 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.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-62237

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