CVE-2026-1005 Affecting wolfssl package, versions <5.9.1-r0


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.08% (24th percentile)

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  • Snyk IDSNYK-ALPINE323-WOLFSSL-17037507
  • published29 May 2026
  • disclosed19 Mar 2026

Introduced: 19 Mar 2026

CVE-2026-1005  (opens in a new tab)

How to fix?

Upgrade Alpine:3.23 wolfssl to version 5.9.1-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream wolfssl package and not the wolfssl package as distributed by Alpine. See How to fix? for Alpine:3.23 relevant fixed versions and status.

Integer underflow in wolfSSL packet sniffer <= 5.8.4 allows an attacker to cause a buffer overflow in the AEAD decryption path by injecting a TLS record shorter than the explicit IV plus authentication tag into traffic inspected by ssl_DecodePacket. The underflow wraps a 16-bit length to a large value that is passed to AEAD decryption routines, causing heap buffer overflow and a crash. An unauthenticated attacker can trigger this remotely via malformed TLS Application Data records.

CVSS Base Scores

version 3.1