VulnSocial

CVE-2026-29905Disclosure(getkirby / kirby)

LOWCVSS 6.5 · 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

Kirby CMS through 5.1.4 allows an authenticated user with 'Editor' permissions to cause a persistent Denial of Service (DoS) via a malformed image upload. The application fails to properly validate the return value of the PHP getimagesize() function. When the system attempts to process this file for metadata or thumbnail generation, it triggers a fatal TypeError.

getkirby CVEsBack to dashboard
0.0/ 10 priority

Sources & remediation

Exploit / PoC references
Vendor / third-party advisories
Other references
Weakness type (CWE)
CWE-20CWE-252

Priority

LOW

Exploitation

NONE

PoC

YES

Patch

NONE

Momentum

STABLE

Are you affected?

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

  • kirby

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 (2026-03-29); latest day: 1
  • 3 total mentions across 2 days

Affected systems

Vendors
getkirby
Products
kirby

Deep dive

Activity timeline3 mentions / 2d
01122Mentions · 2026-03-29: 2Mentions · 2026-04-04: 1Technical Details · 2026-03-29: 2Technical Details · 2026-04-04: 103-2904-04
Signal classification1 categories
Disclosure
3100.0%
Referenced assets3 URLs
Classification over time
DateTotalLabels
2026-03-292
Disclosure2
2026-04-041
Disclosure1
Full discourse3 posts
  • Stalin@0x5t4l1n
    Disclosure

    🚨 CVE-2026-29905 #KirbyCMS DoS via malformed image upload Resource -> https://nvd.nist.gov/vuln/detail/CVE-2026-29905 #CyberSecurity #CVE #BugBounty #Infosec #SecurityResearch #EthicalHacking #Vulnerability #AppSec #Hacker #ZeroDay #Dos https://t.co/1glGqMJeT6

    Post summary

    A brief announcement of CVE-2026-29905, a Denial‑of‑Service flaw in KirbyCMS triggered by malformed image uploads, with no evidence of active exploitation, PoC, or patch information.

    0001063
    2 followersView on X
  • Infoflowcloud@infoflowcloud
    Disclosure

    🚨*CVE* CVE-2026-29905 Kirby CMS through 5.1.4 allows an authenticated user with 'Editor' permissions to cause a persistent Denial of Service (DoS) via a malformed image upload. The applica… https://www.cve.org/CVERecord?id=CVE-2026-29905 ----- Traducción: CVE-2026-29905 Kir… http://infoflow.cloud`

    Post summary

    A new CVE (CVE-2026-29905) is disclosed for Kirby CMS up to v5.1.4, describing a persistent Denial of Service that can be triggered by authenticated Editor users through a malformed image upload.

    0000028
    65 followersView on X
  • CVE@CVEnew
    Disclosure

    CVE-2026-29905 Kirby CMS through 5.1.4 allows an authenticated user with 'Editor' permissions to cause a persistent Denial of Service (DoS) via a malformed image upload. The applica… https://www.cve.org/CVERecord?id=CVE-2026-29905

    Post summary

    CVE-2026-29905 is a persistent DoS flaw in Kirby CMS 5.1.4 that allows authenticated ‘Editor’ users to exploit a malformed image upload. No PoC, exploit, patch, or active exploitation details are mentioned in the text.

    00000146
    56.9K followersView on X
CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
Appgetkirbykirby---

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