CVE-2026-71553

highpriority · track · 0EPSS 0.004 · 37 %ileEUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.43% (37th) EPSS

CVSS 7.1 · high

Is it mine?

2 products

Check your exposure

Who says so?

2 sources

enisa_euvd · osv

EPSS · scored 2026-10-27

ApostropheCMS is an open-source Node.js content management system. In 4.32.0 and earlier, PATCH /api/v1/article/:id accepts the inherited path toString.call and passes it through the utility module to apos.util.set() and apos.util.get(), allowing an authenticated editor to overwrite the shared Object.prototype.toString function's call property and cause a persistent process-wide denial of service until restart.

cvss

Technical severity, 0–10. One row per scoring source.

7.1

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5–7.1

v4.07.1highCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:Nsecondary · ENISA EU

v4.07.1highCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Xsecondary · security-advisories@github.com

v4.05mediumCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Xsecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-1321USprimaryCWE-1321US

affected products (2)

Products and version ranges known to be affected.

apostrophecms Apostrophe≤ ≤ 4.32.0enisa_euvdEU
npm apostrophe≤ 4.32.0osvUSpkg:npm/apostrophe

advisories (1)

Vendor and ecosystem advisories describing this.

GHSA-vmg4-6gfg-83qxApostropheCMS: 2nd-order prototype pollution via PATCH leading to single-request persistent DoS2026-09-02ghsa · osvUS
The vulnerability is a single-request persistent DoS by submitting e.g. "PATCH /api/v1/article/<id>" with a valid editor session and body of {"toString.call":"x"}, overwriting the global toString function with value x. Fabian

also known as (1)

Other names and identifiers for this entity.

EUVD-2026-60442 enisa_euvd

sources

Which sources assert this record, and when.

enisa_euvd osv NVD CVE.org MITRE

published 2026-08-17modified 2026-10-23

related (708)

Related entries.

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The package y18n before 3.2.2, 4.0.1 and 5.0.5, is vulnerable to Prototype Pollution.

+703 more

references (4)

External citations — patches, advisories, analysis.

scry

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