CVE-2026-2968

Summary

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.

Affected Software

VendorProductVersion RangeStatus
CesantaMongoose7.0affected
CesantaMongoose7.1affected
CesantaMongoose7.2affected
CesantaMongoose7.3affected
CesantaMongoose7.4affected
CesantaMongoose7.5affected
CesantaMongoose7.6affected
CesantaMongoose7.7affected
CesantaMongoose7.8affected
CesantaMongoose7.9affected
CesantaMongoose7.10affected
CesantaMongoose7.11affected
CesantaMongoose7.12affected
CesantaMongoose7.13affected
CesantaMongoose7.14affected
CesantaMongoose7.15affected
CesantaMongoose7.16affected
CesantaMongoose7.17affected
CesantaMongoose7.18affected
CesantaMongoose7.19affected
CesantaMongoose7.20affected

Weaknesses

  • CWE-347: Improper Verification of Cryptographic Signature
  • CWE-345: Insufficient Verification of Data Authenticity

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: poc
    • Automatable: no
    • Technical Impact: partial

References