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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-2968 Detail

Description

A vulnerability was detected in Cesanta Mongoose up to 7.20. This impacts the function mg_chacha20_poly1305_decrypt of the file /src/tls_chacha20.c of the component Poly1305 Authentication Tag Handler. The manipulation results in improper verification of cryptographic signature. The attack may be launched remotely. This attack is characterized by high complexity. The exploitability is said to be difficult. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

Nist CVSS score does not match with CNA score
CNA:  VulDB
CVSS-BT 6.3 MEDIUM
Vector:  CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://github.com/dwBruijn/CVEs/blob/main/Mongoose/ChaCha20Poly1305.md VulDB
https://github.com/dwBruijn/CVEs/blob/main/Mongoose/ChaCha20Poly1305.md#poc VulDB
https://vuldb.com/?ctiid.347335 VulDB
https://vuldb.com/?id.347335 VulDB
https://vuldb.com/?submit.757091 VulDB

Weakness Enumeration

CWE-ID CWE Name Source
CWE-345 Insufficient Verification of Data Authenticity VulDB  
CWE-347 Improper Verification of Cryptographic Signature VulDB  

Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-2968
NVD Published Date:
02/22/2026
NVD Last Modified:
02/22/2026
Source:
VulDB