GitHub Advisoryadvisory · Hex

GHSA-c62g-j346-39v5 absinthe_plug Has a Cross-site Scripting vulnerability

LOW Published 2026-05-08 Modified 2026-06-08 Official page ↗
Aliases
CVE-2026-42794
Ecosystem
Hex
Packages
absinthe_plug
Severity
Low
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weaknesses
CWE-79
Reviewed
2026-05-14

Affected packages

• Hex absinthe_plug: >= 1.2.0, <= 1.5.9 (no fix yet)

Description

Improper Neutralization of Input During Web Page Generation (XSS) vulnerability in absinthe-graphql absinthe_plug allows reflected cross-site scripting via the GraphiQL interface. 'Elixir.Absinthe.Plug.GraphiQL':js_escape/1 in lib/absinthe/plug/graphiql.ex escapes single quotes and newlines in the query GET parameter before embedding it in an inline JavaScript string, but does not escape backslashes. An attacker can bypass the escaping by prefixing a quote with a backslash (e.g. \'), breaking out of the string context and executing arbitrary JavaScript in the victim's browser. This issue affects absinthe_plug: from 1.2.0.

Related

Alias · CVE (1)

  • CVE-2026-42794 Improper Neutralization of Input During Web Page Generation (XSS) vulnerability in absinthe-graphql absinthe_plug allows reflected… vulnerability

Weakness · CWE (1)

  • CWE-79 Improper Neutralization of Input During Web Page Generation weakness

References