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ALPINE-CVE-2020-25613

ALPINE-CVE-2020-25613 PUBLISHED CVSS 7.5 HIGH

An issue was discovered in Ruby through 2.5.8, 2.6.x through 2.6.6, and 2.7.x through 2.7.1. WEBrick, a simple HTTP server bundled with Ruby, had not checked the transfer-encoding header value rigorously. An attacker may potentially exploit this issue to bypass a reverse proxy (which also has a poor header check), which may lead to an HTTP Request Smuggling attack.

Risk Scores

CVSS 3.1
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Affected Products

VendorProductVersions
Alpine:v3.12ruby2.0.0_p247-r2, 2.0.0_p247-r1, 2.0.0_p247-r0
Alpine:v3.11ruby1.8.7_p352-r1, 1.8.7_p299-r0, 1.8.7_p174-r7
Alpine:v3.21ruby0, 0, 2.6.0
Alpine:v3.22ruby2.6.0, 0, 0
Alpine:v3.24ruby0, 2.6.0
Alpine:v3.16ruby2.4.1-r4, 2.7.1-r1, *
Alpine:v3.23ruby2.6.0, 0, 0
Alpine:v3.18ruby*, 0, 1.8.7_p160-r2
Alpine:v3.10ruby2.6.0, 1.8.7_p160-r2, 1.8.7_p160-r3
Alpine:v3.13ruby*, 2.6.0, 0
Alpine:v3.15ruby2.2.2-r0, 2.5.3-r1, 2.3.2-r0
Alpine:v3.19ruby1.8.7_p174-r6, 0, 1.8.7_p160-r2
Alpine:v3.17ruby1.8.7, 1.8.7, 1.8.7
Alpine:v3.14ruby1.9.3_p286-r1, 2.2.2-r0, 2.1.5-r1
Alpine:v3.20ruby2.6.0, 0, 0

Timeline

  • Oct 6, 2020 CVE Published
  • Apr 30, 2026 Distribution Patch
  • Jul 8, 2026 CVE Updated
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