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Vulnerabilities ›

CVE-2026-5244

High

A vulnerability has been found in Cesanta Mongoose up to 7.20. This affects the function mg_tls_recv_cert of the file mo

CWE-119 — Weakness Type

                    Published: Apr 2, 2026                      ·  Modified: Apr 9, 2026                      ·  Source: NVD                

CVSS v3

7.3

🔗 NVD Official

📄 Description (English)

A vulnerability has been found in Cesanta Mongoose up to 7.20. This affects the function mg_tls_recv_cert of the file mongoose.c of the component TLS 1.3 Handler. Such manipulation of the argument pubkey leads to heap-based buffer overflow. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. Upgrading to version 7.21 mitigates this issue. The name of the patch is 0d882f1b43ff2308b7486a56a9d60cd6dba8a3f1. It is advisable to upgrade the affected component. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.

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Queued for AI Analysis

This CVE will be auto-analyzed on the next cron run.

🔗 References & Sources 6

https://github.com/cesanta/mongoose/

https://github.com/cesanta/mongoose/commit/0d882f1b43ff2308b7486a56a9d60cd6dba8a3f1

https://github.com/cesanta/mongoose/releases/tag/7.21

https://vuldb.com/submit/770063

https://vuldb.com/vuln/354825

https://vuldb.com/vuln/354825/cti

📊 CVSS Score

7.3

/ 10.0 — High

📊 CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Attack VectorN — None / Network

Attack ComplexityL — Low / Local

Privileges RequiredN — None / Network

User InteractionN — None / Network

ScopeU — Unchanged

ConfidentialityL — Low / Local

IntegrityL — Low / Local

AvailabilityL — Low / Local

📋 Quick Facts

Severity High

CVSS Score7.3

CWECWE-119

EPSS0.08%

Exploit No

Patch ✗ No

Published 2026-04-02

Source Feed nvd

Views 1

🏷️ Tags

CWE-119

⚡ Actions

🔗 NVD Official Page ⚡ Exploit-DB Search 🐙 GitHub PoC Search 🎯 MITRE ATT&CK 📊 CVE Details

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