CVE-2026-44175Disclosure

LOWCVSS 8.5 · HIGH

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

Kirby is an open-source content management system. In versions prior to 4.9.1 and 5.4.1, Kirby did not securely sanitize the contents of the list field on save, leaving it vulnerable to cross-site scripting (XSS). Kirby's list field stores its formatted content as HTML, and unlike other field types, its HTML special characters cannot be escaped without losing the formatting. Sanitization was only enforced client-side in the Panel, while the server did not sanitize the content on save. As a result, an attacker could bypass the Panel and send malicious HTML directly to Kirby's API, storing unsanitized markup in the content file. That markup would then be rendered on the site frontend and executed in the browsers of site visitors and logged-in users browsing the site, resulting in persistent XSS. This issue has been fixed in versions 4.9.1 and 5.4.1.

0.0/ 10 priority

Sources & remediation

Weakness type (CWE)
CWE-79

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

STABLE

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 (2026-07-16); latest day: 1
  • 3 total mentions across 2 days

Deep dive

Activity timeline3 mentions / 2d
01122Mentions · 2026-07-16: 2Mentions · 2026-07-17: 1Technical Details · 2026-07-16: 2Technical Details · 2026-07-17: 107-1607-17
Signal classification1 categories
Disclosure
3100.0%
Referenced assets4 URLs
Classification over time
DateTotalLabels
2026-07-162
Disclosure2
2026-07-171
Disclosure1
Full discourse3 posts
  • Vulmon Vulnerability Feed@VulmonFeeds
    Disclosure

    CVE-2026-44175 Cross-Site Scripting Vulnerability in Kirby CMS Versions Prior to... https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-44175 Vulnerability Alert Subscriptions: https://alerts.vulmon.com/?utm_source=twitter&utm_medium=social&utm_campaign=2102281&utm_content=1

    Post summary

    Initial disclosure of CVE-2026-44175, a cross‑site scripting flaw affecting Kirby CMS, with a link to technical details.

    0000080
    4.1K followersView on X
  • Infoflowcloud@infoflowcloud
    Disclosure

    🚨*CVE* CVE-2026-44175 Kirby is an open-source content management system. In versions prior to 4.9.1 and 5.4.1, Kirby did not securely sanitize the contents of the list field on save, leavi… https://www.cve.org/CVERecord?id=CVE-2026-44175 ----- Traducción: CVE-2026-44175 Kir… http://infoflow.cloud`

    Post summary

    The text announces CVE-2026-44175, revealing that earlier Kirby CMS versions failed to sanitize list field content on save, exposing a potential security flaw.

    0000030
    92 followersView on X
  • CVE@CVEnew
    Disclosure

    CVE-2026-44175 Kirby is an open-source content management system. In versions prior to 4.9.1 and 5.4.1, Kirby did not securely sanitize the contents of the list field on save, leavi… https://www.cve.org/CVERecord?id=CVE-2026-44175

    Post summary

    The passage describes a sanitization flaw in Kirby CMS versions before 4.9.1 and 5.4.1 that could allow malicious content in list fields to be unsafely saved, indicating an undisclosed vulnerability.

    00000630
    57.8K followersView on X

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