Phalcon is a high-performance, full-stack PHP framework. Prior to 5.15.0, every Phalcon MVC application built with a default router registers a built-in route whose compiled PCRE pattern contains the nested quantifier (/.), and the same construct is produced by the /:params placeholder and the CLI router. Phalcon\Mvc\Router::handle() matches this pattern against the attacker-controlled request URI on every request, so a crafted path such as one containing repeated slashes followed by decoded newlines can trigger catastrophic backtracking and cause CPU exhaustion or route-matching failure. This issue is fixed in version 5.15.0.
CVE-2026-57584
HIGHPre-NVD 8.78.7
EchelonGraph scoreLOW confidence
This high-severity CVE scores 8.7 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit-prediction score not yet available (the EPSS model rescores nightly; freshly-published CVEs typically appear within 48 hours). 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: secondary
8.7
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
- High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: —CVSS: 8.7Exploit: NoneExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 8.7
- EG Score
- 8.7(low)
- EPSS
- —
- KEV
- Not listed
Published
July 10, 2026
Last Modified
July 10, 2026
Advisory Details (4)
Auto-updated Jul 10, 2026🔬 Proof of concept available. Patch available. Sources: github, github_commit, github_release.
github Patch Available🟡 PoC Available
Catastrophic backtracking (ReDoS) in the default Phalcon Router route lead to remote unauthenticated DoS · Advisory · phalcon/cphalcon · GitHub
https://github.com/phalcon/cphalcon/security/advisories/GHSA-x7rj-f32v-7jjggithub_release Patch Available
v5.15.0
Patch available: phalcon/cphalcon v5.15.0
https://github.com/phalcon/cphalcon/releases/tag/v5.15.0github_commit
commit fa798e919cb2 (phalcon/cphalcon)
Fix landed in phalcon/cphalcon commit fa798e919cb2 — awaiting tagged release
https://github.com/phalcon/cphalcon/commit/fa798e919cb2c487062bb9899ad6fc2b673b3a67github_commit
commit 14ba22d389d5 (phalcon/cphalcon)
Fix landed in phalcon/cphalcon commit 14ba22d389d5 — awaiting tagged release
https://github.com/phalcon/cphalcon/commit/14ba22d389d5ca620bb9d5207205f836ef1224f2Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 4× in last 7d / 4× 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.
- 2026-07-11 22:03 UTCEG score recompute
- 2026-07-11 09:48 UTCEG score recompute
- 2026-07-10 21:33 UTCEG score recompute
- 2026-07-10 21:32 UTCMITRE cvelistV5first tracked
Frequently asked(4)
What is CVE-2026-57584?
CVE-2026-57584 is a high vulnerability published on July 10, 2026. Phalcon is a high-performance, full-stack PHP framework. Prior to 5.15.0, every Phalcon MVC application built with a default router registers a built-in route whose compiled PCRE pattern contains the nested quantifier (/.), and the same construct is produced by the /:params placeholder and the CLI…
When was CVE-2026-57584 disclosed?
CVE-2026-57584 was first published in the National Vulnerability Database on July 10, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
What is the CVSS score of CVE-2026-57584?
CVE-2026-57584 has a CVSS v3 base score of 8.7 (NVD). The EG score is currently aggregating — additional source signals are being incorporated as they become available..
How do I remediate CVE-2026-57584?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-57584, 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-2026-57584
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