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Alpine: multiple skopeo packages: security update to 1.20.1-r0

high Tenable Cloud Security Plugin ID 443181

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - Go JOSE provides an implementation of the Javascript Object Signing and Encryption set of standards in Go,
 including support for JSON Web Encryption (JWE), JSON Web Signature (JWS), and JSON Web Token (JWT)
 standards. Prior to 4.1.4 and 3.0.5, decrypting a JSON Web Encryption (JWE) object will panic if the alg
 field indicates a key wrapping algorithm (one ending in KW, with the exception of A128GCMKW, A192GCMKW,
 and A256GCMKW) and the encrypted_key field is empty. The panic happens when cipher.KeyUnwrap() in
 key_wrap.go attempts to allocate a slice with a zero or negative length based on the length of the
 encrypted_key. This code path is reachable from ParseEncrypted() / ParseEncryptedJSON() /
 ParseEncryptedCompact() followed by Decrypt() on the resulting object. Note that the parse functions take
 a list of accepted key algorithms. If the accepted key algorithms do not include any key wrapping
 algorithms, parsing will fail and the application will be unaffected. This panic is also reachable by
 calling cipher.KeyUnwrap() directly with any ciphertext parameter less than 16 bytes long, but calling
 this function directly is less common. Panics can lead to denial of service. This vulnerability is fixed
 in 4.1.4 and 3.0.5. (CVE-2026-34986)

Solution

Update the skopeo library and its related packages to version 1.20.1-r0 or later.

See Also

https://security.alpinelinux.org/vuln/CVE-2026-34986

Plugin Details

Severity: High

ID: 443181

Version: Revision 1.1

Type: Local

Published: 6/13/2026

Updated: 6/13/2026

Supported Sensors: Agentless Assessment

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

CVSS Score Source: CVE-2026-34986

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 4/3/2026

Reference Information

CVE: CVE-2026-34986