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Vulnerabilities

Vulnerability · CVE-2026-105831

Unauthenticated stored HTML injection via Lead Capture form

Published Sep 21, 2026 · catalog updated Oct 22, 2026 · Unauthenticated stored HTML injection

Last checked Nov 2, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2026-105831. EPSS is 0.27%. Act only if a listed version of Unauthenticated stored HTML injection is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (Unauthenticated stored HTML injection).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium4.3
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.27%
Remediation
Version ranges on file
Affected products
composer espocrm/espocrm

## Summary When a Lead Capture public form is submitted, the entire request body is stored in the . Later, when an administrator view the lead capture log record (by clicking View from the dropdown in a log record), the field's parsed JSON value is rendered not unescaped, allowing certain HTML content to be rendered in the interface. ## Note JavaScript execution is prevented by the Content Security Policy. While certain HTML elements can be rendered, this capability is also limited.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • composer espocrm/espocrm<= 10.0.5

How to fix CVE-2026-105831

  • Upgrade

    CVE-2026-105831 lists a fix boundary at 10.0.5. Compare the installed build with that boundary before you change production.

  • Version check

    Affected <= 10.0.5

  • Advisory

    Open the cve_org record and follow its fix.

  • Official advisories

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-105831. EPSS is 0.27%. Act only if a listed version of Unauthenticated stored HTML injection is installed.

Which versions are affected?

Compare what you have installed with <= 10.0.5. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.27%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

EspoCRM security

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Sep 21, 2026 · Maintainer security tabs

    Detected

    ## Summary When a Lead Capture public form is submitted, the entire request body is stored in the . Later, when an administrator view the lead capture log record (by clicking View from the dropdown in a log record), the field's parsed JSON value is rendered not unescaped, allowing certain HTML content to be rendered in the interface. ## Note JavaScript execution is prevented by the Content Securit

  2. Oct 22, 2026 · Maintainer security tabs

    Updated

    ## Summary When a Lead Capture public form is submitted, the entire request body is stored in the . Later, when an administrator view the lead capture log record (by clicking View from the dropdown in a log record), the field's parsed JSON value is rendered not unescaped, allowing certain HTML content to be rendered in the interface. ## Note JavaScript execution is prevented by the Content Securit

Sources

  • CVE.orgVulnerability recordCVE-2026-105831

    Official CVE identifier

    cve.org
  • Maintainer security tabsVendor advisoryGHSA-xfqv-j65r-qqgh

    ## Summary When a Lead Capture public form is submitted, the entire request body is stored in the . Later, when an administrator view the lead capture log record (by clicking View from the dropdown in a log record), the field's parsed JSON value is rendered not unescaped, allowing certain HTML content to be rendered in the interface. ## Note JavaScript execution is prevented by the Content Securit

    github.com

Freshness

Last verified in this catalog Nov 1, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • CVE.orgNov 2, 2026
  • Maintainer security tabsNov 1, 2026