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HIGH severity

GHSA-xwjr-6fj7-fc6h — october/cms

HIGHFix: octobercms/library@80aab47

GHSA-xwjr-6fj7-fc6h is a high-severity (CVSS 7.5) CWE-863 vulnerability in october/cms. A fix is available for october/cms — see the affected versions and patch details below.

Local File Inclusion by unauthenticated users

Also known asCVE-2020-15246
Published
Nov 23, 2020
Updated
Jul 8, 2026
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Sep 26, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
1.7%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs76th percentile — riskier than 76% of all scored CVEsHighest risk

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

How urgent is this, really

GHSA-xwjr-6fj7-fc6h by exploitation likelihood (EPSS) against impact (CVSS). Outside the shaded patch-first corner.

Where this sits among everything scored

Of 379,842 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
🐘october/cms

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

Impact

An attacker can exploit this vulnerability to read local files on an October CMS server. The vulnerability is exploitable by unauthenticated users via a specially crafted request.

Patches

Issue has been patched in Build 469 (v1.0.469) and v1.1.0.

Workarounds

Apply https://github.com/octobercms/library/commit/80aab47f044a2660aa352450f55137598f362aa4 to your installation manually if unable to upgrade to Build 469.

References

Reported by ka1n4t

For more information

If you have any questions or comments about this advisory:

Threat assessment:

<img width="1105" alt="Screen Shot 2020-10-10 at 1 05 19 PM" src="https://user-images.githubusercontent.com/7253840/95663086-4ffc4780-0af9-11eb-9bb6-fd40cf11c033.png">

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🐘Packagistoctober/cms≥ 1.0.421&&< 1.0.4691.0.469composer require october/cms:^1.0.469

Affected Products

1 product · 1 configurations
Application
octoberoctobercms
≥ 1.0.421 && < 1.0.469
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 october/cms, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update october/cms to 1.0.469 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-xwjr-6fj7-fc6h is resolved across your whole dependency graph.

  3. Workarounds

    Resolve every user-supplied path to its canonical form and reject anything that escapes the intended directory, and run the component under an account that has no read or write access outside the directory it legitimately serves.

Frequently Asked Questions

### Impact An attacker can exploit this vulnerability to read local files on an October CMS server. The vulnerability is exploitable by unauthenticated users via a specially crafted request. ### Patches Issue has been patched in Build 469 (v1.0.469) and v1.1.0. ### Workarounds Apply https://github.com/octobercms/library/commit/80aab47f044a2660aa352450f55137598f362aa4 to your installation manually if unable to upgrade to Build 469. ### References Reported by [ka1n4t](https://github.com/ka1n4t) ### For more information If you have any questions or comments about this advisory: * Email us at
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GHSA-xwjr-6fj7-fc6h: october/cms (High 7.5) | O3 Security