VulnSocial

CVE-2026-42840Disclosure

LOWCVSS 5.1 · 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

An authenticated user can persist arbitrary HTML/JavaScript in the email_id or mobile_no fields of a Customer record and trigger unescaped rendering in the Point of Sale (POS) interface for every operator who selects that customer. This issue affects ERPNext: 16.16.0.

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0.0/ 10 priority

Sources & remediation

Other references
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 2 signals
  • Disclosure: 3 classified signals
  • Peaked 1d ago at 2 mentions (2026-06-04); latest day: 1
  • 3 total mentions across 2 days

Deep dive

Activity timeline3 mentions / 2d
01122Mentions · 2026-06-04: 2Mentions · 2026-06-16: 1Technical Details · 2026-06-04: 206-0406-16
Signal classification1 categories
Disclosure
3100.0%
Referenced assets4 URLs
Classification over time
DateTotalLabels
2026-06-042
Disclosure2
2026-06-161
Disclosure1
Full discourse3 posts
  • CVE@CVEnew
    Disclosure

    CVE-2026-42840 An authenticated user can persist arbitrary HTML/JavaScript in the email_id or mobile_no fields of a Customer record and trigger unescaped rendering in the Point of S… https://www.cve.org/CVERecord?id=CVE-2026-42840

    Post summary

    The text provides a brief disclosure of CVE‑2026‑42840, highlighting an authenticated‑user web‑injection flaw that allows persistent arbitrary HTML/JavaScript to be stored and rendered unescaped in customer records.

    01021204
    57.9K followersView on X
  • Fluid Attacks@fluidattacks
    Disclosure

    🚨 New zero-day in ERPNext | Detected by our AI SAST scanner and disclosed by Oscar Naveda. As a #CNA, we assigned the ID CVE-2026-42840. Details: 🔗https://fluidattacks.com/advisories/weeknd. We have announced 240 #CVEs to this date: 🔗 https://fluidattacks.com/advisories/ https://t.co/EKWOWb71mp

    Post summary

    FluidAttacks announces a new zero‑day CVE‑2026‑42840 in ERPNext, linking to an advisory for further details; no exploitation, PoC, or patch information is included.

    0000060
    870 followersView on X
  • Infoflowcloud@infoflowcloud
    Disclosure

    🚨*CVE* CVE-2026-42840 An authenticated user can persist arbitrary HTML/JavaScript in the email_id or mobile_no fields of a Customer record and trigger unescaped rendering in the Point of S… https://www.cve.org/CVERecord?id=CVE-2026-42840 ----- Traducción: CVE-2026-42840 Un … http://infoflow.cloud`

    Post summary

    The tweet announces CVE-2026-42840, describing an authenticated XSS vulnerability in specific customer record fields, but does not provide PoC, exploit, patch, or active exploitation information.

    0000031
    79 followersView on X

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