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CVE-2026-55089

9.9 Critique

Publiée le 19/08/2026 à 22:17 · Modifiée le 09/09/2026 à 23:15 · Analyse NVD reportée · Source : security-advisories@github.com

Description

Etherpad is a real-time collaborative editor. From 2.1.0 until 3.1.0, Etherpad's src/node/handler/APIHandler.ts authorizes requests to /api/2/* in the authorization_code OAuth path by using requiredClaims with the admin claim. This check requires only that the claim exists, while src/node/security/OAuth2Provider.ts issues admin: false for configured non-admin users. A non-admin user with a valid signed token can therefore invoke administrative functions including setHTML, setText, appendText, deletePad, copyPad, movePad, restoreRevision, anonymizeAuthor, listAllPads, and listAuthorsOfPad, allowing disclosure, modification, or deletion of pads across the instance. This issue is fixed in version 3.1.0.

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Produits concernés

Scores CVSS

VersionScoreSourceVecteur
3.1 9.9 Critique security-advisories@github.com CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L

Faiblesses (CWE)

Références

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