VulnSocial

CVE-2026-2735Disclosure(alkacon / opencms)

LOWCVSS 5.4 · MEDIUM

Signal is active with 2 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

Stored Cross-Site Scripting (XSS) in Alkacon's OpenCms v18.0, which occurs when user input is not properly validated when sending a POST request to ‘/blog/new-article/org.opencms.ugc.CmsUgcEditService.gwt’ using the ‘text’ parameter.

alkacon CVEsBack to dashboard
0.0/ 10 priority

Sources & remediation

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

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Are you affected?

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

  • opencms

Threat summary

  • 2 mentions across 1 observed day

What's happening

  • Technical details provided in 1 signal
  • Disclosure: 1 classified signal
  • General: 1 classified signal
  • 2 total mentions across 1 day

Affected systems

Vendors
alkacon
Products
opencms

1 version affected across 1 product

Deep dive

Activity timeline2 mentions / 1d
01122Mentions · 2026-02-19: 2Technical Details · 2026-02-19: 102-19
Signal classification2 categories
Disclosure
150.0%
General
150.0%
Referenced assets2 URLs
Full discourse2 posts
  • INCIBE-CERT@incibe_cert
    General

    ⚠️#INCIBEaviso | Múltiples vulnerabilidades en OpenCms de #Alkacon #CVE CVE-2026-2735 CVE-2026-2736 https://www.incibe.es/incibe-cert/alerta-temprana/avisos/multiples-vulnerabilidades-en-opencms-de-alkacon #AvisosDeSeguridad #TI #CNA #0day https://t.co/NpHFtcEZog

    Post summary

    The tweet announces multiple CVEs (CVE-2026-2735 and CVE-2026-2736) affecting OpenCms by Alkacon and provides a link to an INCIBE advisory, but it does not detail exploitation, PoC, patch, or technical specifics.

    00020262
    42.4K followersView on X
  • CVE@CVEnew
    Disclosure

    CVE-2026-2735 Stored Cross-Site Scripting (XSS) in Alkacon's OpenCms v18.0, which occurs when user input is not properly validated when sending a POST request to ‘/blog/new-article/o… https://www.cve.org/CVERecord?id=CVE-2026-2735

    Post summary

    The CVE-2026-2735 vulnerability is a stored XSS in Alkacon OpenCms v18.0 caused by improper input validation on a POST request to /blog/new-article; no PoC, exploit, patch, or active exploitation details are provided.

    0000054
    56.4K followersView on X
CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
Appalkaconopencms18.0.0--

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