apidoc-core is vulnerable to prototype pollution

published 2025-09-25 13 mo ago modified 2026-11-05 3 d ago also GHSA-5q53-78f2-6gf8 , EUVD-2025-31115

cvss: 7.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.4%; EPSS 0.4% chance of exploitation in 30 days, percentile 29%
public exploits: 0; none known

apidoc-core is the core parser library to generate apidoc result following the apidoc-spec. A Prototype Pollution vulnerability in the preProcess function of apidoc-core versions thru 0.15.0 allows attackers to inject properties on Object.prototype via supplying a crafted payload, causing denial of service (DoS) as the minimum consequence.

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 13 mo ago (2025-09-25)

Exploit prediction

0.36% chance of exploitation in the next 30 days, higher than 29% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CNA	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
GitHub	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected packages

ecosystem	package	affected	fixed in
npm	apidoc-core	<=0.15.0	no fix listed

Classification

Weakness

CWE-400 Uncontrolled Resource Consumption

References

github.com /VulnSageAgent/PoCs/blob/main/JavaScript/prototype-pollution/apidoc-core%400.15.0/index.js
web, broken-link
github.com /OrangeShieldInfos/PoCs/tree/main/JavaScript/prototype-pollution/CVE-2025-57317
web, third-party-advisory
nvd.nist.gov /vuln/detail/CVE-2025-57317
advisory
github.com /apidoc/apidoc-core
package

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary