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MEDIUM severity

CVE-2020-11529 — grav

MEDIUMFix: getgrav/grav@2eae104

CVE-2020-11529 is a medium-severity (CVSS 6.1) Open Redirect vulnerability in getgrav/grav. EPSS puts its 30-day exploitation probability at 10.9% (96th percentile). A fix is available for getgrav/grav — see the affected versions and patch details below.

Open Redirect in Grav

Also known asGHSA-wrxc-mr2w-cjpv
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Oct 10, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
10.9%probability of exploitation in next 30 days
Moderate Risk0.00%
Lower risk than most CVEs96th percentile — riskier than 96% of all scored CVEsHighest risk
0.00%33.3%66.7%100.0%86.7%10.9%Apr 26Aug 26Oct 26

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

How urgent is this, really

CVE-2020-11529 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 10–50% band (highlighted). Counts from FIRST.org, log-scaled.

Real-World Exposure

1 pkg affected
🐘getgrav/grav

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

Description

Common/Grav.php in Grav before 1.7 has an Open Redirect. This is partially fixed in 1.6.23 and still present in 1.6.x.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🐘Packagistgetgrav/gravall versions1.6.23composer require getgrav/grav:^1.6.23

Affected Products

1 product · 1 configurations
Application
gravgetgrav
≤ 1.6.31
range

Detection & mitigation playbook

Open-source dependency

  1. Detect

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

  2. Fix

    Update getgrav/grav to 1.6.23 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2020-11529 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.

How to detect CVE-2020-11529

A community-maintained Nuclei template exists for this CVE. You can scan for it directly:

nuclei -id cve-2020-11529 -u https://target
Template
Grav < 1.7 - Open Redirect
Severity
medium
Impact
An attacker can exploit this vulnerability to redirect users to malicious websites, leading to phishing attacks.
Remediation
Upgrade Grav CMS to version 1.7 or later to fix the open redirect vulnerability.

Template by ProjectDiscovery nuclei-templates (0x_Akoko), MIT licensed. View the full template. Scan only systems you are authorised to test.

Frequently Asked Questions

Common/Grav.php in Grav before 1.7 has an Open Redirect. This is partially fixed in 1.6.23 and still present in 1.6.x.
O3 Security · Impact-Aware SCA

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CVE-2020-11529: grav Open Redirect — Fixed in 1.6.23