CVE-2026-56411Disclosure(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

xmlwf in libexpat before 2.8.2 has an integer overflow in endDoctypeDecl via NOTATION declarations.

libexpat_project CVEs Back to dashboard

0.0/ 10 priority

Sources & remediation

Patch / fix

https://github.com/libexpat/libexpat/pull/1263

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-2026-56411 xmlwf in libexpat before 2.8.2 has an integer overflow in endDoctypeDecl via NOTATION declarations. https://www.cve.org/CVERecord?id=CVE-2026-56411 ----- Traducción: CVE-2026-56411 xmlwf en libexpat anterior a 2.8.2 tiene un desbordamiento de entero en … http://infoflow.cloud`
Post summary
The text announces CVE-2026-56411, detailing an integer overflow in libexpat without providing PoC, exploit, or patch information.
0000032
88 followersView on X
CVE@CVEnew91d
Disclosure
CVE-2026-56411 xmlwf in libexpat before 2.8.2 has an integer overflow in endDoctypeDecl via NOTATION declarations. https://www.cve.org/CVERecord?id=CVE-2026-56411
Post summary
The text concisely discloses an integer overflow vulnerability (CVE‑2026‑56411) affecting libexpat prior to version 2.8.2.
00000384
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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