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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 v3.1
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:v3.11ruby1.9.3_p194-r0, 1.8.7_p72-r1, 1.8.7_p358-r1
Alpine:v3.21ruby0, 0, 0
Alpine:v3.22ruby0, 0, 0
Alpine:v3.16ruby*, *, *
Alpine:v3.23ruby0, 0, 0
Alpine:v3.18ruby*, 0, 1.8.7_p160-r2
Alpine:v3.10ruby2.5.8-r0, 1.8.7_p160-r2, 1.8.7_p160-r3
Alpine:v3.13ruby*, 2.7.1-r5, 2.7.1-r4
Alpine:v3.15ruby2.0.0_p247-r0, *, *
Alpine:v3.19ruby2.7.1-r5, 0, 1.8.7_p160-r2
Alpine:v3.17ruby1.8.7, 1.8.7, 1.8.7
Alpine:v3.14ruby1.8.7_p72-r2, 2.0.0_p353-r0, 2.0.0_p247-r2
Alpine:v3.20ruby0, 0, 0

Timeline

  • Oct 6, 2020 CVE Published
  • Dec 3, 2025 CVE Updated
  • Apr 30, 2026 Distribution Patch
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