CVE-2026-50219Disclosure(libexpat_project / libexpat)

LOWCVSS 5.9 · 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

libexpat before 2.8.2 lacks handler call depth tracking for calls to XML_GetBuffer, XML_Parse, XML_ParseBuffer, XML_ParserFree, or XML_ParserReset from within handlers in cases of a policy violation. Thus, a use-after-free can occur,

0.0/ 10 priority

Sources & remediation

Weakness type (CWE)
CWE-416

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

STABLE

Are you affected?

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

  • libexpat

Threat summary

  • 2 mentions across 2 observed days
  • Momentum state: stable

What's happening

  • Technical details provided in 1 signal
  • Disclosure: 1 classified signal
  • Peaked 1d ago at 1 mentions (2026-06-04); latest day: 1
  • 2 total mentions across 2 days

Affected systems

Products
libexpat

Deep dive

Activity timeline2 mentions / 2d
00111Mentions · 2026-06-04: 1Mentions · 2026-10-07: 1Technical Details · 2026-06-04: 106-0410-07
Signal classification1 categories
Disclosure
1100.0%
Referenced assets2 URLs
Full discourse2 posts
  • CISO Marketplace@CisoMarketplace

    CVE-2026-50219 is the smart-office vuln searchers are actually hunting for right now — our May 2026 roundup covers it alongside Cisco OT flaws, CISA alerts and the botnet activity tied to it. https://secureiotoffice.world/smart-office-security-week-may-2026/ #SmartBuildings #OTSecurity https://t.co/40P9cXLSjM

    0000047
    377 followersView on X
  • CVE@CVEnew
    Disclosure

    CVE-2026-50219 libexpat before 2.8.2 lacks handler call depth tracking for calls to XML_GetBuffer, XML_Parse, XML_ParseBuffer, XML_ParserFree, or XML_ParserReset from within handler… https://www.cve.org/CVERecord?id=CVE-2026-50219

    Post summary

    The CVE‑2026‑50219 disclosure details a missing handler call depth tracking in libexpat before 2.8.2, exposing potential exploitation vectors for XML parsing functions, but does not provide any PoC, exploit or patch information.

    00000130
    57.6K followersView on X
CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
Applibexpat_projectlibexpat---

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