How severe is CVE-2017-20157?

CVE-2017-20157 has a CVSS score of 9.8/10, rated CRITICAL. Immediate patching is strongly recommended.

Which packages are affected by CVE-2017-20157?

CVE-2017-20157 affects the following packages: arc/web (Packagist). Ecosystems affected: Packagist.

How do I fix CVE-2017-20157?

Update arc/web to 3.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2017-20157 is resolved across your whole dependency graph.

How do I detect CVE-2017-20157 in my Packagist dependencies?

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

How do I mitigate CVE-2017-20157 if there is no patch (or I can't update yet)?

Restrict outbound requests from the affected component to an allowlist of hosts, block access to link-local and internal address ranges at the network layer, and require authentication on internal services so a forged request cannot reach them unauthenticated.

Is CVE-2017-20157 actively exploited in the wild?

No public exploit code has been indexed for CVE-2017-20157 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for CVE-2017-20157?

CVE-2017-20157 has an EPSS (Exploit Prediction Scoring System) score of 0.7%, placing it in the 54th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

What type of vulnerability is CVE-2017-20157?

CVE-2017-20157 is classified as Server-Side Request Forgery (SSRF) (CWE-918). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation. This is a high-impact weakness class that often enables remote code execution or data exposure.

When was CVE-2017-20157 published, and has it been updated?

CVE-2017-20157 was published on December 31, 2022 and was last updated on October 20, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

🐘

🐘 Packagist

Not in CISA KEV

CRITICAL severity

CVE-2017-20157 — web

CRITICALFix: Ariadne-CMS/arc-web@1feb1cc

CVE-2017-20157 is a critical-severity (CVSS 9.8) Server-Side Request Forgery (SSRF) vulnerability in arc/web. A fix is available for arc/web — see the affected versions and patch details below.

Ariadne Component Library vulnerable to Server-Side Request Forgery

Also known asGHSA-qr97-v87p-x965

Published

Dec 31, 2022

Updated

Oct 20, 2026

Affected

1 pkg

Patched

1 / 1

Exploits

None indexed

Exploitation data as of Nov 3, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗

0.7%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs54th percentile — riskier than 54% of all scored CVEsHighest risk

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

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

1 pkg affected

🐘arc/web

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

A vulnerability was found in Ariadne Component Library up to 2.x. It has been classified as critical. Affected is an unknown function of the file src/url/Url.php. The manipulation leads to server-side request forgery. Upgrading to version 3.0 is able to address this issue. It is recommended to upgrade the affected component. The identifier of this vulnerability is VDB-217140.

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
🐘Packagist	`arc/web`	all versions	3.0`composer require arc/web:^3.0`

Affected Products

1 product · 1 configurations

Application

ariadne component libraryariadne-cms

< 3.0

range

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for arc/web, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update arc/web to 3.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2017-20157 is resolved across your whole dependency graph.
Workarounds
Restrict outbound requests from the affected component to an allowlist of hosts, block access to link-local and internal address ranges at the network layer, and require authentication on internal services so a forged request cannot reach them unauthenticated.

Frequently Asked Questions

O3 Security · Impact-Aware SCA

Is CVE-2017-20157 in your dependencies?

Find it across Packagist, including transitive dependencies.

Scan my dependencies How O3 SCA works

CVSS Score

9.8/10CVSS v3 base

Vector breakdown

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Raw vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE Classification

CWE-918Server-Side Request Forgery (SSRF)

Weaponization

No Nuclei template, Metasploit module or public proof-of-concept found.

Timeline

Disclosed

Dec 31, 2022

Last updated

Oct 20, 2026

Identifiers

CVE-2017-20157

GHSA-qr97-v87p-x965

References

Advisorygithub.com · 3.0 Advisoryvuldb.com Advisoryvuldb.com Advisorynvd.nist.gov · CVE 2017 20157 Fixgithub.com · 1feb1cc11e6c9f218408f15f53f537ea0d788656 Packagegithub.com · arc web

Related vulnerabilities

This CVE is critical severity — higher than any of the other 8 CVEs with CWE-918 (highest there: high).

GHSA-7wpf-ch8f-5f4xCVE-2026-54442GHSA-4mfg-r38w-w8fgCVE-2026-118660CVE-2026-108360CVE-2026-114609CVE-2026-116686CVE-2026-114620Browse all CWE-918

Provenance

Sources

OSV.devNVDFIRST.org (EPSS)

Last verifiedOct 20, 2026

CVE-2017-20157 — web

EPSS Exploitation Probability

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

Description

Affected Packages

Affected Products

Detection & mitigation playbook

Detect

Fix

Workarounds

Frequently Asked Questions

Is CVE-2017-20157 in your dependencies?