Dashboard / CVE-2026-55877

CVE-2026-55877

MEDIUM
MEDIUM Priority: 0.02 BB Relevance: 62/100
Published: 2026-07-08 Modified: 2026-10-25 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Auth Scope Change

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: Required
S: Changed
C: Low
I: Low
A: None

Description

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 ux_icon() Twig function is marked is_safe=['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.

Weakness Classification (1)

Affected Software (1)

VendorProductVersion
symfony ux 2.17.0 – 2.36.1

References & Advisories (4)

Bug Bounty Relevance

62 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity

CVSS Score

6.1 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS — Exploitation Probability

0.34%
Raw Score 0.003380
Percentile 27.2%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00338
2026-10-28
0.00338

Intelligence Sources

nvd ref →

External Links