CVE-2026-55877

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Source
https://cve.org/CVERecord?id=CVE-2026-55877
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-55877.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-55877
Aliases
Published
2026-07-08T21:32:37.407Z
Modified
2026-07-15T01:48:56.965974329Z
Severity
  • 6.1 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N CVSS Calculator
Summary
Symfony UX: XSS in symfony/ux-icons via unsanitized SVG content in local files and Iconify on-demand responses
Details

Symfony UX is a JavaScript ecosystem for Symfony. From 2.17.0 before 2.36.1 and from 3.0.0 before 3.2.0, the uxicon() Twig function is marked issafe=['html'] and Icon::toHtml() inlines SVG source verbatim, allowing unsanitized local SVG files or Iconify on-demand JSON body responses containing nested script elements, on* event handlers, or dangerous URL schemes to execute cross-site scripting. This issue is fixed in versions 2.36.1 and 3.2.0.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55877.json",
    "cwe_ids": [
        "CWE-79"
    ]
}
References

Affected packages

Git / github.com/symfony/ux

Affected ranges

Type
GIT
Repo
https://github.com/symfony/ux
Events
Introduced
80b36bcbeb2902a55495db2afd544f738c73148f
Fixed
dfd2ce941ec3e92af36427685cfb4e900ea9244c
Introduced
3cef8e0d9557bbde60c3f1bfd2cbb1004af7fc9a
Fixed
721417c64bbc85022c56d1e3fb7f66874a38cef2
Fixed
3a4964ec3700f0af4e13f7bfbf8bb3174c3e79d1
Database specific 
{
    "source": [
        "DESCRIPTION",
        "REFERENCES"
    ],
    "extracted_events": [
        {
            "introduced": "2.17.0"
        },
        {
            "fixed": "2.36.1"
        },
        {
            "introduced": "3.0.0"
        },
        {
            "fixed": "3.2.0"
        }
    ]
}

Affected versions

v2.*
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
v2.36.0
v3.*
v3.0.0
v3.1.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-55877.json"