CVE-2026-49212

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Source
https://cve.org/CVERecord?id=CVE-2026-49212
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-49212.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-49212
Aliases
Published
2026-07-17T16:03:27Z
Modified
2026-10-28T02:30:43Z
Severity
  • 6.9 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N CVSS Calculator
Summary
Symfony UX: LiveComponentHydrator HMAC checksum lacks component and slot binding
Details

Symfony UX is a JavaScript ecosystem for Symfony. From 2.8.0 until 2.36.0 and 3.1.0, the HMAC computed by Symfony\UX\LiveComponent\LiveComponentHydrator covered only sorted prop key/value pairs and did not include the component name, the slot identifier (props vs propsFromParent), or request context, allowing a signed blob minted for one component or slot to be replayed in another and set a read-only prop on a target component. This issue is fixed in versions 2.36.0 and 3.1.0.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-345"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/49xxx/CVE-2026-49212.json"
}
References

Affected packages

Git / github.com/symfony/ux

Affected ranges

Type
GIT
Repo
https://github.com/symfony/ux
Events
Introduced
8e214d4461a62f78956607500d9417ddc2f451ef
Fixed
5ccec9746faa28d79a87138042174c3853d5702b
Introduced
3cef8e0d9557bbde60c3f1bfd2cbb1004af7fc9a
Fixed
a224b5af3e2e33ee14ac71356ae0e0877900a81c
Fixed
4c883fdb0f0e7ea577f851bd457024f7e88788c9
Database specific
Show details 
{
    "extracted_events": [
        {
            "cpe": "cpe:2.3:a:symfony:ux:*:*:*:*:*:*:*:*",
            "range": [
                {
                    "introduced": "2.8.0"
                },
                {
                    "fixed": "2.36.0"
                }
            ],
            "source": "CPE_RANGE"
        },
        {
            "cpe": "cpe:2.3:a:symfony:ux:3.0.0:*:*:*:*:*:*:*",
            "range": [
                {
                    "introduced": "3.0.0"
                },
                {
                    "last_affected": "3.0.0"
                }
            ],
            "source": "CPE_STRING"
        },
        {
            "range": [
                {
                    "fixed": "a224b5af3e2e33ee14ac71356ae0e0877900a81c"
                }
            ],
            "source": "REFERENCES_COMMIT"
        },
        {
            "original_tag": "v2.36.0",
            "range": [
                {
                    "fixed": "5ccec9746faa28d79a87138042174c3853d5702b"
                }
            ],
            "source": "REFERENCES_TAG"
        },
        {
            "original_tag": "v3.1.0",
            "range": [
                {
                    "fixed": "4c883fdb0f0e7ea577f851bd457024f7e88788c9"
                }
            ],
            "source": "REFERENCES_TAG"
        }
    ]
}

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
v2.8.0
v2.8.1
v2.9.0
v2.9.1
v3.*
v3.0.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-49212.json"