How severe is CVE-2019-10874?

CVE-2019-10874 has a CVSS score of 8.8/10, rated HIGH. Immediate patching is strongly recommended.

Which packages are affected by CVE-2019-10874?

CVE-2019-10874 affects the following packages: bolt/bolt (Packagist). Ecosystems affected: Packagist.

How do I fix CVE-2019-10874?

Update bolt/bolt to 3.6.7 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2019-10874 is resolved across your whole dependency graph.

How do I detect CVE-2019-10874 in my Packagist dependencies?

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

How do I mitigate CVE-2019-10874 if there is no patch (or I can't update yet)?

If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Is CVE-2019-10874 actively exploited in the wild?

Yes. There are 4 known exploit references for CVE-2019-10874, including 1 documented proof-of-concept exploit on Exploit-DB and 3 in-the-wild exploitations 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-2019-10874?

CVE-2019-10874 has an EPSS (Exploit Prediction Scoring System) score of 4.5%, placing it in the 92th 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-2019-10874?

CVE-2019-10874 is classified as Cross-Site Request Forgery (CSRF) (CWE-352). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation.

When was CVE-2019-10874 published, and has it been updated?

CVE-2019-10874 was published on April 5, 2019 and was last updated on October 24, 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

HIGH severity

CVE-2019-10874 — bolt

HIGHFix: bolt/bolt#7768

CVE-2019-10874 is a high-severity (CVSS 8.8) Cross-Site Request Forgery (CSRF) vulnerability in bolt/bolt. 4 public exploit or proof-of-concept references are indexed, so weaponization risk is real. A fix is available for bolt/bolt — see the affected versions and patch details below.

Bolt Cross Site Request Forgery (CSRF)

Also known asGHSA-3g6c-88pf-m46f

Published

Apr 5, 2019

Updated

Oct 24, 2026

Affected

1 pkg

Patched

1 / 1

Exploits

4 known

Exploitation data as of Nov 2, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗

4.5%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs92th percentile — riskier than 92% 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

🐘bolt/bolt

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

Cross Site Request Forgery (CSRF) in the bolt/upload File Upload feature in Bolt CMS 3.6.6 allows remote attackers to execute arbitrary code by uploading a JavaScript file to include executable extensions in the file/edit/config/config.yml configuration file.

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
🐘Packagist	`bolt/bolt`	≥ 3.6.6&&< 3.6.7	3.6.7`composer require bolt/bolt:^3.6.7`

Affected Products

1 product · 1 configurations

Application

boltboltcms

1 version

3.6.6

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.

EDB-46664webappsphp

Bolt CMS 3.6.6 - Cross-Site Request Forgery / Remote Code Execution

by FelipeGaspar · Apr 8, 2019

Exploit-DB Source

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for bolt/bolt, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update bolt/bolt to 3.6.7 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2019-10874 is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Frequently Asked Questions

O3 Security · Impact-Aware SCA

Is CVE-2019-10874 in your dependencies?

Find it across Packagist, including transitive dependencies.

Scan my dependencies How O3 SCA works

CVSS Score

8.8/10CVSS v3 base

Vector breakdown

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Raw vector

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

CWE Classification

CWE-352Cross-Site Request Forgery (CSRF)

Weaponization

No Nuclei template or Metasploit module yet. 4 public proof-of-concept references are listed on this page.

OpenSSF Scorecard

Package health score

bolt

2.9/10

Code-Review5/10

Maintained0/10

Branch-ProtectionN/A

Assessed Oct 26, 2026

Timeline

Disclosed

Apr 5, 2019

First exploit

Apr 8, 2019

3 days after disclosure — rapid exploitation

Last updated

Oct 24, 2026

Identifiers

CVE-2019-10874

GHSA-3g6c-88pf-m46f

References

Advisorynvd.nist.gov · CVE 2019 10874 Fixgithub.com · 91187aef36363a870d60b0a3c1bf8507af34c9e4 Webpacketstormsecurity.com · Bolt CMS 3.6.6 Cross Site Request Forgery Code Execution Webfgsec.net · from csrf to rce bolt cms Webexploit-db.com Packagegithub.com · bolt Evidencefgsec.net · from csrf to rce bolt cms Evidenceexploit-db.com

Related vulnerabilities

This CVE is high severity; 1 of 8 other CVEs affecting bolt/bolt is rated as high or higher (top: high).

CVE-2025-34086CVE-2024-7300CVE-2019-9553CVE-2019-15484CVE-2019-15483CVE-2017-11128CVE-2017-11127CVE-2018-19933

Provenance

Sources

OSV.devNVDFIRST.org (EPSS)

Last verifiedOct 24, 2026

CVE-2019-10874 — bolt

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-2019-10874 in your dependencies?