CVE-2026-103043: alexcorvi anchorme

anchorme through 3.0.8 Regular Expression Denial of Service

CVSS 8.7 HighEPSS 0.0059 · 48th percentile

Published by the CVE Program (CNA: VulnCheck) at 29 Sept 2026, 22:51 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
alexcorvi	anchorme Package name: anchorme pkg:npm/anchorme	affected 3.0.8 and earlier semver Other versions: unaffected

Identifiers

CVE-2026-103043

CNA

VulnCheck

Weakness (CWE)

CWE-1333

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
8.7	High	4.0	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N	CNA (VulnCheck)Used for this record
7.5	High	3.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	CNA (VulnCheck)

CISA KEV Not listed.
EPSS 0.0059, the 48th percentile, on 13 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 29 Sept 2026. New records show when each source confirmed them.

Sources

References from the CNA

gist.github.com/mmadersbacher/46050b4224eb979431986cdef1dd2ad3 third-party-advisory
github.com/alexcorvi/anchorme.js/blob/f3ae9850baa344f27b46bb149e9b891831d273b1/src/index.ts#L109 technical-description
www.npmjs.com/package/anchorme product
github.com/alexcorvi/anchorme.js product
www.vulncheck.com/advisories/anchorme-through-3.0.8-regular-expression-denial-of-service third-party-advisory
gist.github.com/R3tro16/92948206e9893a3739b91746439384ab technical-descriptionexploit

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.