CVE•Published 2026-09-01•Modified 2026-09-08•1 article on news•5 live references•NVD data
CVE-2026-84203
Vulnerability data via NVD (ingested)
CVSS v3.1
8.1
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
EPSS percentile
17
Exploit Prediction Scoring System · top 83% of all CVEs
Weaknesses (CWE)
Description
Memos versions 0.26.0 through 0.30.0 fail to revoke refresh tokens when a user changes their password, allowing attackers to maintain account access. An attacker with a stolen refresh token can call the RefreshToken RPC to obtain new access tokens and rotate the refresh token indefinitely, bypassing the password change security measure.
Timeline
Published 2026-09-01
Modified 2026-09-08
External references
Search for exposed instances
Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).
More intel sources (5)
Shodan report
vuln:CVE-2026-84203Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-84203Censys host search filtered to this CVE id.
grep.app
CVE-2026-84203Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-84203GitHub code search for direct mentions.
Google dork
"CVE-2026-84203" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub
No public proof-of-concept repositories found for CVE-2026-84203 on GitHub.