CVE-2026-59989Phalcon Volt compiler `join` filter compile-time PHP code injection (SSTI lead to RCE)
Updated under an hour ago ()
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It affects phalcon cphalcon. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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Phalcon is a high-performance, full-stack PHP framework. In 5.15.0 and earlier, resolveFilter in phalcon/Mvc/View/Engine/Volt/Compiler.zep builds the join filter by inserting the raw separator and array token values into generated PHP without passing them through expression(). An attacker who can influence Volt template source can place quote-breaking content in a join argument, inject PHP into the compiled cache file, and execute it when Phalcon\Mvc\View\Engine\Volt::render() loads the template. This issue is fixed in version 5.16.0.
- CVSS
- 9.2 CRITICAL (v4.0, CNA)CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- Weakness (CWE)
- CWE-94, CWE-1336
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- GitHub_M
- NVD analysis
- Deferred
- Record last updated
- Aug 27, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
phalcon cphalcon phalcon:cphalcon (from the name) | before 5.16.0 | CNA record |
References
- https://github.com/phalcon/cphalcon/security/advisories/GHSA-hrwp-4hh9-c8r8x-refsource-confirm
- https://github.com/phalcon/cphalcon/pull/17217x-refsource-misc
- https://github.com/phalcon/cphalcon/commit/e434061be3b7161930476c1368c868badc71e1bdx-refsource-misc
- https://github.com/phalcon/cphalcon/releases/tag/v5.16.0x-refsource-misc
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.