🛡️ CVE-2017-20146 — handlers

🔴 CVSS 9.5 — Critical ✅ No Known Exploit CWE-346 OSV
9.5
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

gorilla/handlers may allow requester to bypass expected behavior of the Same Origin Policy

Usage of the CORS handler may apply improper CORS headers, allowing the requester to explicitly control the value of the Access-Control-Allow-Origin header, which bypasses the expected behavior of the Same Origin Policy.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability high.

Weakness class

CVE-2017-20146 is classified as CWE-346: Origin Validation Error. The origin of a message or request is not verified properly, so one source can pose as another.

Affected software

CVE-2017-20146 is recorded against 1 package.

  • github.com/gorilla/handlers

Timeline and source

Published on 28 December 2022 and last revised on 8 November 2023. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

nvd.nist.gov (Advisory)
github.com (Web)
github.com (Web)
github.com (Package)
pkg.go.dev (Web)

CVE-2017-20146 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity CRITICAL
CVSS Score 9.5
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE CWE-346
Public Exploit ✅ No
Source OSV
Published 2022-12-28
Updated 2026-08-12
Modified 2023-11-08
Fix URL N/A

Affected Packages

Software From version Fixed in
github.com/gorilla/handlers — —

Exploit Protection

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CVE-2017-20146 carries CVSS 9.5 Critical rating. BotEraser checks your installation against this and other known CVE records, and blocks IPs associated with exploit activity.

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