CVE-2026-82274Public exploitNetwork attack vectorHinoki check available

OAuth code disclosure via unvalidated callback state

Published Aug 28, 2026 · Updated Aug 28, 2026

Open redirect in Twenty 2.35.0 and earlier allows remote attackers to forward OAuth authorization codes to arbitrary hosts via crafted requests. The OAuthPropagatorController.propagateOAuthCallback endpoint accepts state as a redirect URL, then appends code and state after domain validation falls through to the default workspace. Exploitation requires user interaction and the default single-workspace setting; it exposes authorization codes only when the endpoint is registered with an upstream OAuth provider.

CVSS severity5.3
Medium
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Open redirect in Twenty 2.35.0 and earlier allows remote attackers to forward OAuth authorization codes to arbitrary hosts via crafted requests. The OAuthPropagatorController.propagateOAuthCallback endpoint accepts state as a redirect URL, then appends code and state after domain validation falls through to the default workspace. Exploitation requires user interaction and the default single-workspace setting; it exposes authorization codes only when the endpoint is registered with an upstream OAuth provider.

The record

CVE
CVE-2026-82274
Published
Aug 28, 2026
Updated
Aug 28, 2026
Vendor
Twenty
Product
Twenty
Classifications
CWE-601, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 28, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 28, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=2.35.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Twenty · Twentyversion=0 <=2.35.0

Published CVSS scores

5.3VulnCheck CNACVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-601URL Redirection to Untrusted Site ('Open Redirect')
T1204.001User Execution: Malicious Link

Public exploit references

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Technologies

Your stack

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Your stack

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