VulnSocial

CVE-2026-27119Disclosure(svelte / svelte)

LOWCVSS 5.4 · MEDIUM

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

svelte performance oriented web framework. From 5.39.3, <=5.51.4, in certain circumstances, the server-side rendering output of an <option> element does not properly escape its content, potentially allowing HTML injection in the SSR output. Client-side rendering is not affected. This vulnerability is fixed in 5.51.5.

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0.0/ 10 priority

Sources & remediation

Vendor / third-party advisories
Weakness type (CWE)
CWE-79

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

STABLE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • svelte

Threat summary

  • 3 mentions across 2 observed days
  • Momentum state: stable

What's happening

  • Technical details provided in 3 signals
  • Disclosure: 3 classified signals
  • Peaked 1d ago at 2 mentions (2026-02-20); latest day: 1
  • 3 total mentions across 2 days

Affected systems

Vendors
svelte
Products
svelte

Deep dive

Activity timeline3 mentions / 2d
01122Mentions · 2026-02-20: 2Mentions · 2026-03-06: 1Technical Details · 2026-02-20: 2Technical Details · 2026-03-06: 102-2003-06
Signal classification1 categories
Disclosure
3100.0%
Referenced assets2 URLs
Classification over time
DateTotalLabels
2026-02-202
Disclosure2
2026-03-061
Disclosure1
Full discourse3 posts
  • Enis@enismaholli
    Disclosure

    I ended up finding an Cross-Site Scripting vulnerability while testing @sveltejs Svelte Framework. If you’re using SvelteKit, it might be worth taking a closer look. CVE-2026-27119 #CyberSecurity #InfoSec #Vercel #Svelte #CVE202627119 #OpenSource

    Post summary

    The text announces the discovery of CVE‑2026‑27119, a Cross‑Site Scripting flaw in the Svelte framework, and encourages SvelteKit users to review their code.

    00000299
    41 followersView on X
  • Vulmon Vulnerability Feed@VulmonFeeds
    Disclosure

    CVE-2026-27119 Svelte Server-Side Rendering HTML Injection Vulnerability in Versions 5.39.3-5.51.4 https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-27119

    Post summary

    The entry announces a new Svelte SSR HTML injection vulnerability affecting versions 5.39.3-5.51.4; it provides the type and affected ranges but no PoC, exploit code, or exploitation status.

    0000034
    4.0K followersView on X
  • CVE@CVEnew
    Disclosure

    CVE-2026-27119 svelte performance oriented web framework. From 5.39.3, &lt;=5.51.4, in certain circumstances, the server-side rendering output of an &lt;option&gt; element does not properly … https://www.cve.org/CVERecord?id=CVE-2026-27119

    Post summary

    The post discloses CVE-2026-27119 affecting certain Svelte versions with improper server‑side rendering of <option> elements, but provides no PoC, exploit details, or patch information.

    0000068
    56.4K followersView on X
CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
Appsveltesvelte-node.js-

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