Detections
Analytics

SCA: security update for sinatra (GHSA-mr3q-g2mv-mr4q)

medium Tenable Self-Hosted Container Security Plugin ID 435581

Description

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

 - Sinatra is a domain-specific language for creating web applications in Ruby. In versions prior to 4.2.0,
 there is a denial of service vulnerability in the `If-Match` and `If-None-Match` header parsing component
 of Sinatra, if the `etag` method is used when constructing the response. Carefully crafted input can cause
 `If-Match` and `If-None-Match` header parsing in Sinatra to take an unexpected amount of time, possibly
 resulting in a denial of service attack vector. This header is typically involved in generating the `ETag`
 header value. Any applications that use the `etag` method when generating a response are impacted. Version
 4.2.0 fixes the issue. (CVE-2025-61921)

See Also

https://github.com/advisories/GHSA-mr3q-g2mv-mr4q

Plugin Details

Severity: Medium

ID: 435581

Version: Revision 1.164

Type: Local

Family: SCA Checks

Published: 10/11/2025

Updated: 7/1/2026

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

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.73

Vendor

Vendor Severity: Low

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.1

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

CVSS Score Source: CVE-2025-61921

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.7

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:P/RL:O/RC:C

CVSS v4

Risk Factor: Medium

Base Score: 6.9

Threat Score: 2.7

Threat Vector: CVSS:4.0/E:P

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

Vulnerability Information

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 10/10/2025

Vulnerability Publication Date: 10/10/2025

Reference Information

CVE: CVE-2025-61921