CVE-2026-56406Disclosure(libexpat_project / libexpat)

LOWCVSS 6.9 · 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

libexpat before 2.8.2 has an integer overflow in XML_ParseBuffer because it lacked a check that was present in XML_Parse.

libexpat_project CVEs Back to dashboard

0.0/ 10 priority

Sources & remediation

Patch / fix

https://github.com/libexpat/libexpat/pull/1255

Weakness type (CWE)

CWE-190

Priority

LOW

Exploitation

NONE

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.

libexpat

Threat summary

2 mentions across 1 observed day

What's happening

Technical details provided in 2 signals
Disclosure: 2 classified signals
2 total mentions across 1 day

Affected systems

Vendors

libexpat_project

Products

libexpat

Deep dive

Activity timeline2 mentions / 1d

Signal classification1 categories

Disclosure

2100.0%

Referenced assets2 URLs

By indicator

Full discourse2 posts

Infoflowcloud@infoflowcloud91d
Disclosure
🚨*CVE* CVE-2026-56406 libexpat before 2.8.2 has an integer overflow in XML_ParseBuffer because it lacked a check that was present in XML_Parse. https://www.cve.org/CVERecord?id=CVE-2026-56406 ----- Traducción: CVE-2026-56406 libexpat antes de 2.8.2 tiene un desbordamiento de… http://infoflow.cloud`
Post summary
The tweet announces CVE-2026-56406, an integer overflow in libexpat before 2.8.2 caused by a missing check in XML_ParseBuffer, without mentioning any PoC, exploit code, or patch.
0000036
88 followersView on X
CVE@CVEnew91d
Disclosure
CVE-2026-56406 libexpat before 2.8.2 has an integer overflow in XML_ParseBuffer because it lacked a check that was present in XML_Parse. https://www.cve.org/CVERecord?id=CVE-2026-56406
Post summary
Briefly announces an integer overflow vulnerability in libexpat (pre‑2.8.2) without delivery of PoC, exploit code, patch info, or evidence of active exploitation.
00000471
57.7K followersView on X

CPE platform detail1 entries

Part:

Vendor:

Product:

Version:

Target SW:

Target HW:

1 of 1 entries

Part	Vendor	Product	Version	Target SW	Target HW
App	libexpat_project	libexpat	-	-	-

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