How severe is CVE-2022-35587?

CVE-2022-35587 has a CVSS score of 4.8/10, rated MEDIUM. Review your exposure and patch according to your risk tolerance.

Which packages are affected by CVE-2022-35587?

CVE-2022-35587 affects the following packages: forkcms/forkcms (Packagist). Ecosystems affected: Packagist.

How do I fix CVE-2022-35587?

Update forkcms/forkcms to 5.11.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2022-35587 is resolved across your whole dependency graph.

How do I detect CVE-2022-35587 in my Packagist dependencies?

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

How do I mitigate CVE-2022-35587 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-2022-35587 actively exploited in the wild?

Yes. There are 1 known exploit references for CVE-2022-35587, including 1 in-the-wild exploitation observed on GitHub and other sources. Treat this as actively exploitable and prioritize patching immediately. All exploit code should only be run in an isolated sandbox environment for research or authorized testing — never against production systems without explicit written authorization.

What is the EPSS score for CVE-2022-35587?

CVE-2022-35587 has an EPSS (Exploit Prediction Scoring System) score of 0.8%, placing it in the 58th 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-2022-35587?

CVE-2022-35587 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-2022-35587 published, and has it been updated?

CVE-2022-35587 was published on August 12, 2022 and was last updated on October 28, 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

MEDIUM severity

CVE-2022-35587 — forkcms

MEDIUMFix: forkcms/forkcms@76bf739

CVE-2022-35587 is a medium-severity (CVSS 4.8) Cross-site Scripting (XSS) vulnerability in forkcms/forkcms. 1 public exploit or proof-of-concept reference is indexed, so weaponization risk is real. A fix is available for forkcms/forkcms — see the affected versions and patch details below.

ForkCMS XSS via `publish_on_date` parameter

Also known asGHSA-65wf-qm95-6mhm

Published

Aug 12, 2022

Updated

Oct 28, 2026

Affected

1 pkg

Patched

1 / 1

Exploits

1 known

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

EPSS Exploitation Probability

via FIRST.org ↗

0.8%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs58th percentile — riskier than 58% 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

🐘forkcms/forkcms

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 cross-site scripting (XSS) issue in the Fork version 5.9.3 allows remote attackers to inject JavaScript via the publish_on_date Parameter. This issue was patched in version 5.11.0.

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
🐘Packagist	`forkcms/forkcms`	all versions	5.11.0`composer require forkcms/forkcms:^5.11.0`

Affected Products

1 product · 1 configurations

Application

fork cmsfork-cms

1 version

5.9.3

Exploits & PoCs

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

A cross-site scripting (XSS) issue in the Fork version 5.9.3 allows remo…

huntr.devNVDAug 2022

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for forkcms/forkcms, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update forkcms/forkcms to 5.11.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2022-35587 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

A cross-site scripting (XSS) issue in the Fork version 5.9.3 allows remote attackers to inject JavaScript via the `publish_on_date` Parameter. This issue was patched in version 5.11.0.

O3 Security · Impact-Aware SCA

Is CVE-2022-35587 in your dependencies?

Find it across Packagist, including transitive dependencies.

Scan my dependencies How O3 SCA works

CVSS Score

4.8/10CVSS v3 base

Vector breakdown

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Raw vector

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

CWE Classification

CWE-79Cross-site Scripting (XSS)

Weaponization

No Nuclei template or Metasploit module yet. 1 public proof-of-concept reference is listed on this page.

Timeline

Disclosed

Aug 12, 2022

First exploit

Aug 15, 2022

3 days after disclosure — rapid exploitation

Last updated

Oct 28, 2026

Identifiers

CVE-2022-35587

GHSA-65wf-qm95-6mhm

References

Advisorygithub.com · CVE 2022 35587.json Advisorynvd.nist.gov · CVE 2022 35587 Webhuntr.dev · 6 other forkcms Webgithub.com · 76bf739e01f697e10c1277b9726e39b9705be296 Webhuntr.dev · 6 other forkcms Packagegithub.com · forkcms

Related vulnerabilities

This CVE is medium severity, in line with the other 8 CVEs affecting forkcms/forkcms.

CVE-2022-35585CVE-2022-35590CVE-2022-35589CVE-2020-13633CVE-2012-1207CVE-2012-1188CVE-2018-5215CVE-2012-1209

Provenance

Sources

OSV.devNVDFIRST.org (EPSS)

Last verifiedOct 28, 2026