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MEDIUM severity

Open RedirectGHSA-cpgw-2wxr-pww3

MEDIUMFix: gogs/gogs#5365

GHSA-cpgw-2wxr-pww3 is a medium-severity (CVSS 6.1) Open Redirect vulnerability in gogs.io/gogs. 1 public exploit reference exists, so weaponization risk is real. A fix is available for gogs.io/gogs — see the affected versions and patch details below.

Also known asCVE-2018-15178GO-2022-0822
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
1 known
Exploitation data as of Oct 11, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
1.3%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs70th percentile — riskier than 70% of all scored CVEsHighest risk
0.00%0.61%1.21%1.82%0.2%1.3%Apr 26Aug 26Oct 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

GHSA-cpgw-2wxr-pww3 by exploitation likelihood (EPSS) against impact (CVSS). Outside the shaded patch-first corner.

Where this sits among everything scored

Of 385,738 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Counts from FIRST.org, log-scaled.

Real-World Exposure

1 pkg affected
🐹gogs.io/gogs

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Go packages — download data is not available via public APIs for these ecosystems.

Description

Open redirect vulnerability in Gogs before 0.12 allows remote attackers to redirect users to arbitrary websites and conduct phishing attacks via an initial /\ substring in the user/login redirect_to parameter, related to the function isValidRedirect in routes/user/auth.go.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🐹Gogogs.io/gogsall versions0.12.0go get gogs.io/gogs@v0.12.0

Affected Products

1 product · 1 configurations
Application
gogsgogs
< 0.12
range
Exploits & PoCs
1

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

Open redirect vulnerability in Gogs before 0.12 allows remote attackers …

github.comNVDOct 2018

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for gogs.io/gogs, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update gogs.io/gogs to 0.12.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-cpgw-2wxr-pww3 is resolved across your whole dependency graph.

  3. Workarounds

    Stop reflecting attacker-controlled destinations: resolve every redirect target against an allowlist of paths or hosts you own, prefer a server-side key over a full URL in the request, and reject absolute URLs entirely where the flow only ever needs a relative one.

Frequently Asked Questions

Open redirect vulnerability in Gogs before 0.12 allows remote attackers to redirect users to arbitrary websites and conduct phishing attacks via an initial /\ substring in the user/login redirect_to parameter, related to the function isValidRedirect in routes/user/auth.go.
O3 Security · Impact-Aware SCA

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Open Redirect (Medium 6.1)