CVE-2026-105211

LOWCVSS 9.2 · 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

ZITADEL before 4.17.1 contains an authentication bypass vulnerability in Login V2 that allows unauthenticated attackers to take over accounts by obtaining OTP codes via the returnCode delivery type. Attackers knowing a login name of a victim with OTP-Email and OTP-SMS enrolled can read both codes from server-action responses to gain MFA-authenticated sessions, including administrator takeover.

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0.0/ 10 priority

Sources & remediation

Other references

Weakness type (CWE)

CWE-200

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

STABLE

Threat summary

3 mentions across 2 observed days
Momentum state: stable

What's happening

Peaked 1d ago at 2 mentions (2026-10-04); latest day: 1
3 total mentions across 2 days

Deep dive

Activity timeline3 mentions / 2d

Referenced assets2 URLs

By indicator

Full discourse3 posts

Cybersecurity News DE@cybsecuritynews1d
#schwachstellen Kritische ZITADEL-Schwachstellen ermöglichen Kontoübernahme über Login und IdP-Verknüpfung #cve2026105207 #cve2026105209 #cve2026105211 #cve2026105215 #identityprovider #loginv1 #loginv2 #zitadel https://cybersecurity-news.de/zitadel-kritische-schwachstellen-kontouebernahme-cve-2026-105207-cve-2026-105209-cve-2026-105211-cve-2026-105215
0000026
14 followersView on X
CVE@CVEnew2d
CVE-2026-105211 ZITADEL before 4.17.1 contains an authentication bypass vulnerability in Login V2 that allows unauthenticated attackers to take over accounts by obtaining OTP codes… https://www.cve.org/CVERecord?id=CVE-2026-105211
00000973
58.1K followersView on X
VulDB 🛡@vuldb2d
A severe vulnerability was disclosed for Zitadel (CVE-2026-105211) vuldb.com/vuln/413438
00000113
2.3K followersView on X

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