How severe is CVE-2017-1000431?

CVE-2017-1000431 has a CVSS score of 6.1/10, rated MEDIUM. Review your exposure and patch according to your risk tolerance.

Which packages are affected by CVE-2017-1000431?

CVE-2017-1000431 affects the following packages: ezsystems/ezpublish-legacy (Packagist), ezsystems/ezpublish-legacy (Packagist). Ecosystems affected: Packagist.

How do I fix CVE-2017-1000431?

Update ezsystems/ezpublish-legacy to 5.4.10 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2017-1000431 is resolved across your whole dependency graph.

How do I detect CVE-2017-1000431 in my Packagist dependencies?

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

How do I mitigate CVE-2017-1000431 if there is no patch (or I can't update yet)?

Escape or sanitise the affected output on the server side rather than relying on client-side filtering, and add a Content-Security-Policy that blocks inline script execution so injected markup cannot run even if it reaches the page.

Is CVE-2017-1000431 actively exploited in the wild?

No public exploit code has been indexed for CVE-2017-1000431 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-2017-1000431?

CVE-2017-1000431 has an EPSS (Exploit Prediction Scoring System) score of 0.7%, placing it in the 52th 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-2017-1000431?

CVE-2017-1000431 is classified as Cross-site Scripting (XSS) (CWE-79). 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-2017-1000431 published, and has it been updated?

CVE-2017-1000431 was published on May 14, 2022 and was last updated on April 25, 2024. 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

MEDIUM severity

CVE-2017-1000431 — ezpublish-legacy

MEDIUMFix: ezsystems/ezpublish-legacy@c717429

CVE-2017-1000431 is a medium-severity (CVSS 6.1) Cross-site Scripting (XSS) vulnerability in ezsystems/ezpublish-legacy. A fix is available for ezsystems/ezpublish-legacy — see the affected versions and patch details below.

eZ Publish Cross-site Scripting (XSS) vulnerability

Published

May 14, 2022

Updated

Apr 25, 2024

Affected

2 pkgs

Patched

2 / 2

Exploits

None indexed

Exploitation data as of Oct 30, 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 CVEs52th percentile — riskier than 52% 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

2 pkgs affected

🐘ezsystems/ezpublish-legacy🐘ezsystems/ezpublish-legacy

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

eZ Systems eZ Publish version 5.4.0 to 5.4.9, and 5.3.12.0 and older, is vulnerable to an XSS issue in the search module, resulting in a risk of attackers injecting scripts which may e.g. steal authentication credentials.

Affected Packages

2 total 2 fixed

Ecosystem	Package	Vulnerable range	Fix
🐘Packagist	`ezsystems/ezpublish-legacy`	≥ 5.4.0&&< 5.4.10	5.4.10`composer require ezsystems/ezpublish-legacy:^5.4.10`
🐘Packagist	`ezsystems/ezpublish-legacy`	≥ 5.3.0&&< 5.3.12.1	5.3.12.1`composer require ezsystems/ezpublish-legacy:^5.3.12.1`

Affected Products

1 product · 2 configurations

Application

ez publishez

≥ 5.4.0 && ≤ 5.3.12

range

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for ezsystems/ezpublish-legacy, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update ezsystems/ezpublish-legacy to 5.4.10 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2017-1000431 is resolved across your whole dependency graph.
Workarounds
Escape or sanitise the affected output on the server side rather than relying on client-side filtering, and add a Content-Security-Policy that blocks inline script execution so injected markup cannot run even if it reaches the page.

Frequently Asked Questions

O3 Security · Impact-Aware SCA

Is CVE-2017-1000431 in your dependencies?

Find it across Packagist, including transitive dependencies.

Scan my dependencies How O3 SCA works

CVSS Score

6.1/10CVSS v3 base

Vector breakdown

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Raw vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CWE Classification

CWE-79Cross-site Scripting (XSS)

Weaponization

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

OpenSSF Scorecard

Package health score

ezpublish-legacy

3.5/10

Maintained0/10

Code-Review4/10

Branch-ProtectionN/A

Assessed Oct 26, 2026

Timeline

Disclosed

May 14, 2022

Last updated

Apr 25, 2024

Identifiers

CVE-2017-1000431

References

Advisorynvd.nist.gov · CVE 2017 1000431 Webgithub.com · c7174295fa0b9bd81bd4af908082464b0b80f278 Webgithub.com · CVE 2017 1000431.yaml Webweb.archive.org · ezsa 2017 005 xss issue in search Webshare.ez.no · ezsa 2017 005 xss issue in search

Related vulnerabilities

This CVE is medium severity; 8 of 8 other CVEs affecting ezsystems/ezpublish-legacy are rated as high or higher (top: high).

CVE-2026-38739GHSA-2vh3-cj9j-mcj5GHSA-39j2-4p9j-5w4jGHSA-82rv-45pc-v28wGHSA-9895-26wr-4fgvGHSA-cc2j-92jq-wgjgGHSA-p9mp-vq4v-v5m5GHSA-pqjm-xcp8-wgmm

Provenance

Sources

OSV.devNVDFIRST.org (EPSS)

Last verifiedApr 25, 2024