CVE-2026-49209
- Source
- https://cve.org/CVERecord?id=CVE-2026-49209
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-49209.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-49209
- Aliases
- Published
- 2026-07-17T16:02:06.498Z
- Modified
- 2026-08-07T11:51:17.421344755Z
- Severity
-
- 5.3 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N CVSS Calculator
- Summary
- Symfony UX: Denial of service in symfony/ux-live-component via unbounded batch action requests
- Details
-
Symfony UX is a JavaScript ecosystem for Symfony. From 2.5.0 until 2.36.0 and 3.1.0, Symfony\UX\LiveComponent\Controller\BatchActionController::__invoke() iterates over the client-supplied actions array and issues a full HttpKernel sub-request for each entry; because the array size is never bounded, an authenticated client can submit a single _batch request containing thousands of actions and exhaust CPU, memory, and database connections on the application server. This issue is fixed in versions 2.36.0 and 3.1.0.
- Database specific
{ "cwe_ids": [ "CWE-770" ], "cna_assigner": "GitHub_M", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/49xxx/CVE-2026-49209.json" }- References
-
- https://github.com/symfony/ux/releases/tag/v2.36.0
- https://github.com/symfony/ux/releases/tag/v3.1.0
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/49xxx/CVE-2026-49209.json
- https://github.com/symfony/ux/security/advisories/GHSA-mm82-c99c-h2cf
- https://nvd.nist.gov/vuln/detail/CVE-2026-49209
- https://github.com/symfony/ux/commit/95e878d5257f13d6d652ca95e3ef6bb0934d674f
Affected packages
Git / github.com/symfony/ux
Affected ranges
- Type
- GIT
- Repo
- https://github.com/symfony/ux
- Events
- Database specific
{ "source": [ "CPE_RANGE", "CPE_STRING", "REFERENCES" ], "extracted_events": [ { "introduced": "2.5.0" }, { "fixed": "2.36.0" }, { "introduced": "3.0.0" }, { "last_affected": "3.0.0" } ], "cpe": [ "cpe:2.3:a:symfony:ux:*:*:*:*:*:*:*:*", "cpe:2.3:a:symfony:ux:3.0.0:*:*:*:*:*:*:*" ] }
Affected versions
3.*
3.0.0
v2.*
v2.10.0
v2.11.0
v2.11.1
v2.11.2
v2.12.0
v2.13.0
v2.13.1
v2.13.2
v2.13.3
v2.14.0
v2.14.1
v2.14.2
v2.15.0
v2.16.0
v2.17.0
v2.18.0
v2.18.1
v2.19.0
v2.19.1
v2.19.2
v2.19.3
v2.20.0
v2.21.0
v2.22.0
v2.22.1
v2.23.0
v2.24.0
v2.25.0
v2.25.1
v2.25.2
v2.26.0
v2.26.1
v2.27.0
v2.28.0
v2.28.1
v2.28.2
v2.29.0
v2.29.1
v2.29.2
v2.30.0
v2.31.0
v2.32.0
v2.33.0
v2.34.0
v2.35.0
v2.5.0
v2.6.0
v2.6.1
v2.7.0
v2.7.1
v2.8.0
v2.8.1
v2.9.0
v2.9.1
v3.*
v3.0.0