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Advisory record · GHSA-j9gf-vw2f-9hrw

Appsmith: Configuration-dependent origin validation bypass in password reset and email verification link generation

CVSS 8.1 High

Published by the GitHub Advisory Database at 12 Jun 2026, 18:28 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
com.appsmith:serverMaven<2.02.0
Identifiers
GHSA-j9gf-vw2f-9hrw
Weakness (CWE)
CWE-346 · CWE-807
Tags
Published
12 Jun 2026
Updated
12 Jun 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

Appsmith server (Maven com.appsmith:server) versions before 2.0 are affected. When the APPSMITH_BASE_URL setting is unset, password reset and email verification flows accept the request's Origin header as the base URL for generated email links. An unauthenticated attacker who can trigger these emails for a target account could make the clickable host of the token-bearing link point to an attacker-controlled domain, which the report says could lead to account takeover after victim interaction. Upgrade to version 2.0 or later; setting APPSMITH_BASE_URL to the instance's address is a workaround.

Written 3 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
8.1 High 3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N GitHub Advisory Database
  • CISA KEV Not listed.
  • EPSS No score.

Timeline

  1. 31 Oct 2026, 14:20 UTC First seen by agentprime
  2. 31 Oct 2026, 14:20 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.