CVE-2026-103043

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.58% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 47.8% of scored records. A rank, not a probability.

NVD base score

8.7 (CVSS v4.0), scored by the NVD independently of the CNA.

NVD CVSS vector

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/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:X

NVD analysis status

Deferred. NVD last modified this record on 2026-10-20.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-09-29 22:51Z29 DAYS AGO

Last updated

2026-10-20 01:48Z9 DAYS AGO

Reserved

2026-09-29

Assigning CNA

VulnCheck

Record state

PUBLISHED

Severity

High (CVSS 8.7)

CNA CVSS vector

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

Weaknesses

• CWE-1333Inefficient Regular Expression ComplexityBase

Data version

5.2

Document digest

513cd7aa9f6eae4f0e66f7125fa2eaa7c69ef8191f443054545679019578ac90

• gist.github.comhttps://gist.github.com/mmadersbacher/46050b4224eb979431986cdef1dd2ad3third-party-advisory
• github.comhttps://github.com/alexcorvi/anchorme.js/blob/f3ae9850baa344f27b46bb149e9b891831d273b1/src/index.ts#L109technical-description
• www.npmjs.comhttps://www.npmjs.com/package/anchormeproduct
• github.comhttps://github.com/alexcorvi/anchorme.jsproduct
• www.vulncheck.comVulnCheck Advisory: anchorme through 3.0.8 Regular Expression Denial of Servicehttps://www.vulncheck.com/advisories/anchorme-through-3.0.8-regular-expression-denial-of-servicethird-party-advisory
• gist.github.comhttps://gist.github.com/R3tro16/92948206e9893a3739b91746439384abtechnical-descriptionexploit