CVE Explorer
CVE-2026-49209
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
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"product":"ux","vendor":"symfony","versions":[{"status":"affected","version":">= 3.0.0, < 3.1.0"},{"status":"affected","version":">= 2.5.0, < 2.36.0"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:d0094166e58c1bf45fdcc8d8db971ce444359db61d6f5ee323bd653c21c550af · sha256:1f4e4082d18941df… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":5.3,"baseSeverity":"MEDIUM","privilegesRequired":"LOW","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","vectorString":"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","version":"4.0","vulnAvailabilityImpact":"LOW","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE"},"metric_type":"cvssV4_0"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:d0094166e58c1bf45fdcc8d8db971ce444359db61d6f5ee323bd653c21c550af · sha256:1f4e4082d18941df… · /containers/cna/metrics/0/cvssV4_0
CWE assertions
1 source assertion{"cweId":"CWE-770","description":"CWE-770: Allocation of Resources Without Limits or Throttling","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:d0094166e58c1bf45fdcc8d8db971ce444359db61d6f5ee323bd653c21c550af · sha256:1f4e4082d18941df… · /containers/cna/problemTypes/0/descriptions/0
Source references
4 source assertions{"name":"https://github.com/symfony/ux/commit/95e878d5257f13d6d652ca95e3ef6bb0934d674f","tags":["x_refsource_MISC"],"url":"https://github.com/symfony/ux/commit/95e878d5257f13d6d652ca95e3ef6bb0934d674f"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:d0094166e58c1bf45fdcc8d8db971ce444359db61d6f5ee323bd653c21c550af · sha256:1f4e4082d18941df… · /containers/cna/references/1
{"name":"https://github.com/symfony/ux/releases/tag/v2.36.0","tags":["x_refsource_MISC"],"url":"https://github.com/symfony/ux/releases/tag/v2.36.0"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:d0094166e58c1bf45fdcc8d8db971ce444359db61d6f5ee323bd653c21c550af · sha256:1f4e4082d18941df… · /containers/cna/references/2
{"name":"https://github.com/symfony/ux/releases/tag/v3.1.0","tags":["x_refsource_MISC"],"url":"https://github.com/symfony/ux/releases/tag/v3.1.0"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:d0094166e58c1bf45fdcc8d8db971ce444359db61d6f5ee323bd653c21c550af · sha256:1f4e4082d18941df… · /containers/cna/references/3
{"name":"https://github.com/symfony/ux/security/advisories/GHSA-mm82-c99c-h2cf","tags":["x_refsource_CONFIRM"],"url":"https://github.com/symfony/ux/security/advisories/GHSA-mm82-c99c-h2cf"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:d0094166e58c1bf45fdcc8d8db971ce444359db61d6f5ee323bd653c21c550af · sha256:1f4e4082d18941df… · /containers/cna/references/0
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.