CVE-2026-46649

LOWCVSS 9.1 · CRITICAL

Signal is active with 1 mentions in latest observed window

Immediate actions

Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

Joplin is an open source note-taking and to-do application that organises notes and lists into notebooks. Prior to 3.7.2, Joplin Server's GET /api/login_with_code/:id endpoint accepts a nine-digit SSO authentication code with a ten-minute lifetime without applying limiterLoginBruteForce. An unauthenticated attacker who targets a user during an active SSO login can make unlimited guesses, and a correct code returns a full session token that permits access to and modification of the user's notes, notebooks, and account settings. This issue is fixed in version 3.7.2.

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0.0/ 10 priority

Sources & remediation

Other references

Weakness type (CWE)

CWE-307

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Threat summary

1 mentions across 1 observed day

What's happening

1 total mentions across 1 day

Deep dive

Activity timeline1 mentions / 1d

Referenced assets1 URL

By indicator

https://www.valtersit.com/cve/CVE-2026-46649

Full discourse1 post

Hugo | DevOps | Cybersecurity 🇱🇻@HugoValters1d
CVE-2026-46649: Joplin Server pre-3.7.2 SSO code endpoint skips brute-force limits, letting unauthenticated attackers guess 9-digit codes and steal session tokens for full note access. CVSS 9.1. Patch under review - restrict https://www.valtersit.com/cve/CVE-2026-46649 #CVE #infosec #Joplin #Joplin #CVEALERT #CVE #infosec #Linux #XSS #valtersit #snippet #SysAdmin #cybersecurity #devsecops #devops #developer #100daysofcode #git #github #gitlab #redteam #blueteam #ethicalhacker #cybersecurityawareness #cybersecuritynews #cybersecuritytips #python #hacker #kali #ubuntu #debian #docker
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