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SCA: security update for github.com/klauspost/compress (GHSA-259r-337f-4rfw)

high Tenable Self-Hosted Container Security Plugin ID 476354

Description

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

 - compress provides various compression algorithms. Prior to version 1.18.7, a signed integer overflow
 vulnerability in s2.NewDict() allows an attacker to bypass repeat index validation by supplying a
 dictionary with a uvarint-encoded repeat value exceeding MaxInt64. When Dict.Encode() is subsequently
 called, the overflowed negative repeat value causes an out-of-bounds memory access via unsafe.Pointer
 arithmetic, crashing the process with SIGSEGV. This issue has been patched in version 1.18.7.
 (CVE-2026-63209)

Solution

Update the github.com/klauspost/compress library and its related packages to version 1.18.7 or later.

See Also

https://github.com/advisories/GHSA-259r-337f-4rfw

Plugin Details

Severity: High

ID: 476354

Version: Revision 1.1

Type: Local

Family: SCA Checks

Published: 10/20/2026

Updated: 10/20/2026

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.67

Vendor

Vendor Severity: High

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-2026-63209

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

Patch Publication Date: 10/20/2026

Vulnerability Publication Date: 9/29/2026

Reference Information

CVE: CVE-2026-63209