Detections
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SCA: security update for github.com/SpectoLabs/hoverfly (GHSA-qrh4-p6v4-mrfg)

high Tenable Self-Hosted Container Security Plugin ID 444705

Description

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

 - Hoverfly is an open source API simulation tool. Prior to version 1.12.8, when Hoverfly is running in Diff
 mode, the `AddDiff()` function writes to the shared `responsesDiff` map without any synchronization (no
 mutex). When multiple proxy requests are processed concurrently (the normal case for any proxy), the
 concurrent map writes trigger Go's built-in race detector which causes a `fatal error: concurrent map read
 and map write`, immediately killing the entire Hoverfly process. This is trivially exploitable by sending
 multiple simultaneous requests. Version 1.12.8 patches the issue. (CVE-2026-50013)

Solution

Update the github.com/SpectoLabs/hoverfly library and its related packages to version 1.12.8 or later.

See Also

https://github.com/advisories/GHSA-qrh4-p6v4-mrfg

Plugin Details

Severity: High

ID: 444705

Version: Revision 1.3

Type: Local

Family: SCA Checks

Published: 7/14/2026

Updated: 9/14/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.77

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-2026-50013

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: 7/14/2026

Vulnerability Publication Date: 7/14/2026

Reference Information

CVE: CVE-2026-50013