CVE-2026-56407Disclosure(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 doProlog that is related to storeEntityValue and entity textLen.

libexpat_project CVEs Back to dashboard

0.0/ 10 priority

Sources & remediation

Patch / fix

https://github.com/libexpat/libexpat/pull/1262

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-2026-56407 libexpat before 2.8.2 has an integer overflow in doProlog that is related to storeEntityValue and entity textLen. https://www.cve.org/CVERecord?id=CVE-2026-56407 ----- Traducción: CVE-2026-56407 libexpat anteriores a 2.8.2 tiene un desbordamiento de ent… http://infoflow.cloud`
Post summary
A newly disclosed CVE‑2026‑56407 for libexpat before v2.8.2 contains an integer overflow in doProlog; no PoC, exploit, or patch is mentioned.
0000031
88 followersView on X
CVE@CVEnew91d
Disclosure
CVE-2026-56407 libexpat before 2.8.2 has an integer overflow in doProlog that is related to storeEntityValue and entity textLen. https://www.cve.org/CVERecord?id=CVE-2026-56407
Post summary
The post announces CVE-2026-56407, detailing an integer overflow in libexpat before version 2.8.2 affecting doProlog, storeEntityValue, and entity textLen, but offers no evidence of exploitation or mitigation.
00000430
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	-	-	-

Explore more

Back to dashboard libexpat_project CVEs libexpat vulnerabilities