CVE-2026-45753

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Source
https://cve.org/CVERecord?id=CVE-2026-45753
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-45753.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-45753
Aliases
Downstream
Published
2026-07-14T18:21:13.644Z
Modified
2026-08-05T03:32:16.638689749Z
Severity
  • 2.1 (Low) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N CVSS Calculator
Summary
Symfony: HtmlSanitizer UrlAttributeSanitizer Omits action/formaction/poster/cite — javascript: URI Survives Sanitization (XSS)
Details

Symfony is a PHP framework for web and console applications and a set of reusable PHP components. From 6.1.0-BETA1 until 6.4.40, 7.4.12, and 8.0.12, UrlAttributeSanitizer::getSupportedAttributes() omits URL-valued attributes including action, formaction, poster, and cite, so configurations that admit those attributes can leave javascript: URIs unsanitized and enable XSS when the resulting HTML is rendered or a victim submits a form or clicks a button. This issue is fixed in versions 6.4.40, 7.4.12, and 8.0.12.

Database specific 
{
    "cwe_ids": [
        "CWE-184",
        "CWE-79"
    ],
    "cna_assigner": "GitHub_M",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45753.json",
    "unresolved_ranges": [
        {
            "source": "AFFECTED_FIELD",
            "extracted_events": [
                {
                    "introduced": "6.1.0-BETA1"
                },
                {
                    "fixed": "6.4.40"
                },
                {
                    "introduced": "7.0.0-BETA1"
                },
                {
                    "fixed": "7.4.12"
                },
                {
                    "introduced": "8.0.0-BETA1"
                },
                {
                    "fixed": "8.0.12"
                },
                {
                    "introduced": "6.1.0-BETA1"
                },
                {
                    "fixed": "6.4.40"
                },
                {
                    "introduced": "7.0.0-BETA1"
                },
                {
                    "fixed": "7.4.12"
                },
                {
                    "introduced": "8.0.0-BETA1"
                },
                {
                    "fixed": "8.0.12"
                }
            ]
        }
    ]
}
References

Affected packages

Git / github.com/symfony/security-http

Affected ranges

Type
GIT
Repo
https://github.com/symfony/security-http
Events
Introduced
7350abfec0228dabb8dafde17d8a821f65c6dd4f
Fixed
816860d96c4fb7ffd7708ae0531ea6e5a1190773
Introduced
f84d7d3c93e6a884908402775199b1f7d55c7be1
Fixed
1fc7ca636cbd2cad29b42cc13c9fd0c681c6efee
Introduced
bea6dc79db4d95c34b77ec27273d812aa64d65be
Fixed
d776945b2dc41c0e609c56c1ef69863ab56856ed
Database specific 
{
    "source": "CPE_RANGE",
    "cpe": "cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "6.1.0"
        },
        {
            "fixed": "6.4.40"
        },
        {
            "introduced": "7.0.0"
        },
        {
            "fixed": "7.4.12"
        },
        {
            "introduced": "8.0.0"
        },
        {
            "fixed": "8.0.12"
        }
    ]
}

Affected versions

v6.*
v6.1.0
v6.1.0-RC1
v6.2.0
v6.2.0-BETA1
v6.2.0-BETA3
v6.2.0-RC1
v6.3.0-BETA1
v6.3.0-RC1
v6.4.0
v6.4.0-BETA1
v6.4.0-BETA3
v6.4.0-RC1
v6.4.0-RC2
v6.4.11
v6.4.12
v6.4.13
v6.4.14
v6.4.15
v6.4.18
v6.4.19
v6.4.21
v6.4.22
v6.4.23
v6.4.24
v6.4.25
v6.4.26
v6.4.3
v6.4.30
v6.4.31
v6.4.34
v6.4.39
v6.4.4
v6.4.7
v6.4.8
v6.4.9
v7.*
v7.0.0
v7.0.0-RC2
v7.0.1
v7.1.0
v7.1.0-BETA1
v7.1.0-RC1
v7.2.0
v7.2.0-BETA1
v7.2.0-BETA2
v7.2.0-RC1
v7.2.1
v7.3.0
v7.3.0-BETA1
v7.3.0-BETA2
v7.3.0-RC1
v7.4.0
v7.4.0-BETA1
v7.4.0-RC1
v7.4.0-RC2
v7.4.1
v7.4.11
v7.4.3
v7.4.4
v7.4.6
v7.4.8
v7.4.9
v8.*
v8.0.0
v8.0.1
v8.0.11
v8.0.3
v8.0.4
v8.0.6
v8.0.8
v8.0.9

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-45753.json"

Git / github.com/symfony/symfony

Affected ranges

Type
GIT
Repo
https://github.com/symfony/symfony
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
487728e7e180a674a6d4c01bd0cb56161cc441b7
Fixed
95a951788e30c45356278f4e4472cbbf552d0eb9
Fixed
275f5cbccbcc50205206f05e599c4f57009aadb8
Fixed
06d3b2c9a8aeb5d8493738cc51e24f6a1215827c
Database specific 
{
    "source": "REFERENCES"
}

Affected versions

v2.*
v2.0.0
v2.0.0-RC1
v2.0.0-RC2
v2.0.0-RC3
v2.0.0-RC4
v2.0.0-RC5
v2.0.0-RC6
v2.0.0BETA1
v2.0.0BETA2
v2.0.0BETA3
v2.0.0BETA4
v2.0.0BETA5
v2.0.0PR8
v2.1.0
v2.1.0-BETA1
v2.1.0-BETA2
v2.1.0-BETA3
v2.1.0-BETA4
v2.1.0-RC1
v2.1.0-RC2
v2.2.0-BETA1
v2.2.0-BETA2
v2.3.0-BETA1
v2.3.0-BETA2
v2.4.0-BETA1
v2.4.0-BETA2
v2.5.0-BETA1
v2.5.0-BETA2
v2.6.0-BETA1
v3.*
v3.0.0
v3.0.0-BETA1
v3.2.0-BETA1
v3.2.0-RC1
v3.3.0-BETA1
v4.*
v4.0.0-BETA1
v4.0.0-BETA2
v4.0.0-BETA3
v4.0.0-BETA4
v4.2.0-BETA1
v4.2.0-BETA2
v4.3.0-BETA1
v5.*
v5.0.0-BETA1
v5.0.0-BETA2
v5.0.0-RC1
v5.1.0-BETA1
v5.2.0-BETA1
v5.2.0-BETA2
v5.2.0-BETA3
v5.3.0-BETA1
v5.3.0-BETA2
v5.3.0-BETA3
v5.3.0-BETA4
v6.*
v6.0.0-BETA1
v6.0.0-BETA2
v6.0.0-BETA3
v6.0.0-RC1
v6.1.0-BETA1
v6.1.0-BETA2
v6.1.0-RC1
v6.2.0-BETA1
v6.2.0-BETA2
v6.2.0-BETA3
v6.3.0-BETA1
v6.3.0-BETA2
v6.3.0-BETA3
v6.3.0-RC1
v6.4.0
v6.4.0-BETA1
v6.4.0-BETA2
v6.4.0-BETA3
v6.4.0-RC1
v6.4.0-RC2
v6.4.1
v6.4.10
v6.4.11
v6.4.12
v6.4.13
v6.4.14
v6.4.15
v6.4.16
v6.4.17
v6.4.18
v6.4.19
v6.4.2
v6.4.20
v6.4.21
v6.4.22
v6.4.23
v6.4.24
v6.4.25
v6.4.26
v6.4.27
v6.4.28
v6.4.29
v6.4.3
v6.4.30
v6.4.31
v6.4.32
v6.4.33
v6.4.34
v6.4.35
v6.4.36
v6.4.37
v6.4.38
v6.4.39
v6.4.4
v6.4.5
v6.4.6
v6.4.7
v6.4.8
v6.4.9
v7.*
v7.0.0-BETA1
v7.0.0-BETA2
v7.0.0-BETA3
v7.0.0-RC1
v7.1.0-BETA1
v7.1.0-RC1
v7.2.0-BETA1
v7.2.0-BETA2
v7.2.0-RC1
v7.3.0-BETA1
v7.3.0-BETA2
v7.3.0-RC1
v7.4.0
v7.4.0-BETA1
v7.4.0-BETA2
v7.4.0-RC1
v7.4.0-RC2
v7.4.0-RC3
v7.4.1
v7.4.10
v7.4.11
v7.4.2
v7.4.3
v7.4.4
v7.4.5
v7.4.6
v7.4.7
v7.4.8
v7.4.9
v8.*
v8.0.0
v8.0.0-BETA1
v8.0.0-BETA2
v8.0.0-RC1
v8.0.0-RC2
v8.0.0-RC3
v8.0.1
v8.0.10
v8.0.11
v8.0.2
v8.0.3
v8.0.4
v8.0.5
v8.0.6
v8.0.7
v8.0.8
v8.0.9
Other
vPR3
vPR4
vPR5
vPR6
vPR8
vPR9

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-45753.json"