CVE-2026-105208 (GCVE-0-2026-105208)

Vulnerability from cvelistv5 – Published: 2026-10-04 13:10 – Updated: 2026-10-04 13:10
VLAI
Title
ZITADEL before 4.17.3 Session Hijacking via Forgeable IdP Intent Tokens
Summary
ZITADEL 4.x before 4.17.3 and 3.x through 3.4.15 protects IdP intent tokens with unauthenticated, malleable encryption, allowing authenticated users to tamper with their own token so it is accepted for another user's external login intent. An attacker who predicts a victim's in-flight intent identifier and wins a timing race can call /v2/idp_intents or /v2/sessions to steal the victim's IdP tokens or hijack their session.
Severity
8.7 (High)
CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:P/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N
7.7 (High)
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N
CWE
  • CWE-649 - Reliance on Obfuscation or Encryption of Security-Relevant Inputs without Integrity Checking
Assigner
References
Impacted products
Vendor Product Version CPE status
zitadel zitadel Affected: 0 , < 4.17.3 (semver)
Unaffected: 4.17.3 (semver)
guessed Create a notification for this product.
zitadel zitadel Affected: 0 , ≤ 4.19.4 (semver)
guessed Create a notification for this product.
Date Public
2026-09-04 00:00
Credits
livio-a wim07101993
Show details on NVD website
To clipboard 

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}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.