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VulnerabilityCVE-2026-86544Published 2026-09-07

CVE-2026-86544 — knowns-dev knowns

high

As of 2026-09-07, CVE-2026-86544 is a HIGH-severity vulnerability in knowns-dev knowns, CVSS v3.1 8.1, EPSS 0.3% (23.8th percentile). No Threadlinqs-tracked threat campaign has been attributed to CVE-2026-86544 as of 2026-09-07; the identifier is re-checked against the Threadlinqs threat corpus on every daily ingest.

CVSS v3.1
8.1/10High
EPSS
0.3%Higher than 23.8% of scored CVEs
CISA KEV
NoNot in the KEV catalog
Tracked threats
0None linked yet
Priority
5/10Threadlinqs triage score
Published
CVSS v3.1 8.1 (HIGH) · CVSS v4.0 7.2 · EPSS 0.3% (higher than 23.8% of all scored CVEs) · Priority 5/10 · Published 2026-09-07

Last updated:

What is CVE-2026-86544?

knowns versions before 0.30.0 contain an authorization bypass vulnerability where mutating code actions are incorrectly classified as read-only operations. Attackers with read-restricted sessions can exploit code.replace to modify permission configurations and escalate privileges on subsequent calls.

The record classifies CVE-2026-86544 under weakness class CWE-863. Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs low-privilege credentials, needs no user interaction, and has high impact on integrity, availability. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 28 days ago.

Severity and exploitation probability

CVSS v3.1 base score
8.1 — HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
CVSS v4.0 base score
7.2
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N
EPSS (FIRST)
0.3% probability of exploitation in the next 30 days, higher than 23.8% of all scored CVEs
CISA KEV
Not listed in the CISA Known Exploited Vulnerabilities catalog
Threadlinqs priority
5/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
Published
2026-09-07

Is CVE-2026-86544 being exploited?

It currently carries a trending score of 36 in the Threadlinqs vulnerability feed.

Affected products and versions

How to fix CVE-2026-86544

No vendor patch reference has been recorded for CVE-2026-86544 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.

Threat activity tracking CVE-2026-86544

No threat campaign in the Threadlinqs corpus currently references CVE-2026-86544, in its CVE list or as an indicator. The linkage is recomputed from the live corpus on every daily ingest, so this section fills in as soon as a tracked campaign cites the identifier.

Sources

Enriched from CVE.org, NVD, GitHub Security Advisories, FIRST EPSS. Last verified by Threadlinqs on . This product uses the NVD API but is not endorsed or certified by the NVD.

Other references

Showing 5 of 6 recorded references.