VulnSocial

CVE-2026-44742Active Exploitation(postorius_project / postorius)

LOWCVSS 6.1 · MEDIUM

Exploitation ongoing with high activity in latest observed window (2 mentions)

Immediate actions

  • Prioritize remediation for postorius_project postorius systems immediately
  • Assume compromise if assets are exposed
  • Track advisory updates for patch or workaround availability

Recommended action window: Immediate (within 24h)

NVD description

Postorius through 1.3.13 does not escape HTML in the message subject when rendering it in the Held messages pop-up, as exploited in the wild in May 2026.

postorius_project CVEsBack to dashboard
3.5/ 10 priority

Sources & remediation

Patch / fix
Vendor / third-party advisories
Other references
Weakness type (CWE)
CWE-79

Priority

LOW

Exploitation

ACTIVE

PoC

NONE

Patch

AVAILABLE

Momentum

NONE

Are you affected?

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

  • postorius

Threat summary

  • Active exploitation appears in 2 classified signals
  • 2 mentions across 1 observed day

What's happening

  • Active exploitation reported across 2 signals
  • Technical details provided in 2 signals
  • 2 total mentions across 1 day

Affected systems

Vendors
postorius_project
Products
postorius

Deep dive

Activity timeline2 mentions / 1d
01122Mentions · 2026-05-07: 2Active Exploitation · 2026-05-07: 2Technical Details · 2026-05-07: 205-07
Signal classification1 categories
Active Exploitation
2100.0%
Referenced assets2 URLs
By indicator
Full discourse2 posts
  • Infoflowcloud@infoflowcloud
    Active Exploitation

    🚨*CVE* CVE-2026-44742 Postorius through 1.3.13 does not escape HTML in the message subject when rendering it in the Held messages pop-up, as exploited in the wild in May 2026. https://www.cve.org/CVERecord?id=CVE-2026-44742 ----- Traducción: CVE-2026-44742 Postorius hasta 1.… http://infoflow.cloud`

    Post summary

    CVE-2026‑44742 in Postorius allows unsanitized HTML in message subjects, enabling XSS attacks that were actively exploited in May 2026.

    0000039
    75 followersView on X
  • CVE@CVEnew
    Active Exploitation

    CVE-2026-44742 Postorius through 1.3.13 does not escape HTML in the message subject when rendering it in the Held messages pop-up, as exploited in the wild in May 2026. https://www.cve.org/CVERecord?id=CVE-2026-44742

    Post summary

    CVE-2026-44742 is an HTML escaping flaw in Postorius that was actively exploited in the wild in May 2026, with no known patch or exploit code mentioned.

    00000174
    57.4K followersView on X
CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
Apppostorius_projectpostorius---

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