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🛡️ CVE-2026-47386 — nocodb

⚪ Unknown ✅ No Known Exploit CWE-362 NVD
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

NocoDB: OAuth Authorization Code Race Condition

Summary

Two concurrent token-exchange requests using the same OAuth authorization code could

each mint a distinct valid (access_token, refresh_token) pair, breaking the

single-use guarantee that PKCE relies on.

Details

The token-exchange flow read is_used and called markAsUsed as an unconditional

update at the end of the path. A new OAuthAuthorizationCode.claimByCode method now

performs an atomic compare-and-swap (WHERE code = ? AND is_used = false) and is

called immediately before OAuthToken.insert, after redirect-URI, PKCE, and client

authentication have all succeeded. Only the first concurrent caller's UPDATE wins;

the rest see invalid_grant: Authorization code has already been used.

Impact

An attacker who has observed an authorization code and the corresponding PKCE

verifier (for example through a malicious OAuth-aware client or by racing a real

exchange) could obtain a long-lived refresh token in addition to the legitimate one.

Credit

This issue was reported by [@eddieran](https://github.com/eddieran).

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is high, an attacker needs no privileges on the target. No user interaction is required. Rated impact: confidentiality none, integrity low, availability none.

CVSS metrics in full

The score comes from this vector: CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N

  • Attack vector: Network — reachable from anywhere that can route to the service.
  • Attack complexity: High — the attacker first has to win a race, learn a secret or otherwise prepare the target.
  • Attack requirements: Present — the target has to be in a particular state for the attack to work.
  • Privileges required: None — an unauthenticated stranger can try it.
  • User interaction: None — nobody has to be tricked into anything.
  • Confidentiality impact: None.
  • Integrity impact: Low — limited, and the attacker does not choose what is affected.
  • Availability impact: None.

Weakness class

CVE-2026-47386 is classified as CWE-362: Race Condition. Concurrent operations share state without proper synchronisation, so timing decides whether the result is correct.

Affected software

CVE-2026-47386 is recorded against 2 packages.

  • nocodb (fixed in 2026.05.1)
  • unknown

Timeline and source

Published on 5 June 2026 and last revised on 20 July 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

github.com (Web)
nvd.nist.gov (Advisory)
github.com (Package)
github.com (Web)

Other advisories for this package

nocodb has other advisories on record. If you are patching this one, these are worth checking on the same host:

Same weakness in other software

These advisories are the same class of weakness (CWE-362: Race Condition) in other software:

Details

Severity Unknown
CVSS Score N/A
CVSS Vector CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
CWE CWE-362
Public Exploit ✅ No
Source NVD
Published 2026-06-05
Updated 2026-08-20
Modified 2026-07-20
Fix URL N/A

Affected Packages

Software From version Fixed in
nocodb — 2026.05.1
unknown — —

Similar Threats

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ⓘ Data Notice: The information presented above has been compiled from publicly available internet sources. Boteraser aggregates this data solely for informational purposes and does not independently classify, evaluate, or endorse any findings about the vulnerabilities listed. The accuracy and completeness of this information is the sole responsibility of the original publishers. Boteraser and its operators accept no liability for any decisions made based on this data.

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