Vulnerabilities CVE-2026-42794

CVE-2026-42794

Low

Open

TLP:CLEAR

Reflected XSS via backslash bypass in GraphiQL js_escape in absinthe_plug

NVD CVE.org

Critical Infrastructure

AI Analysis

No AI analysis 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.

Details

CVSS Score: 2.3
EPSS Score ⓘ: 0.28%

20.7th percentile
CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
Confidence: 90%
Published: May 8, 2026
Last Modified: May 9, 2026

Notes

No notes yet. Click "Add Note" to create the first analysis note.

Opinions

No opinions yet. Be the first to assess this intelligence.