CVE-2026-42794

6.1 MEDIUM
Published: May 08, 2026 Modified: May 21, 2026
View on NVD

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 before 1.5.10.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://cna.erlef.org/cves/CVE-2026-42794.html
Source: 6b3ad84c-e1a6-4bf7-a703-f496b71e49db
Third Party Advisory
https://github.com/absinthe-graphql/absinthe_plug/issues/275
Source: 6b3ad84c-e1a6-4bf7-a703-f496b71e49db
Issue Tracking
https://osv.dev/vulnerability/EEF-CVE-2026-42794
Source: 6b3ad84c-e1a6-4bf7-a703-f496b71e49db
Third Party Advisory
https://github.com/absinthe-graphql/absinthe_plug/issues/275
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
Issue Tracking

5 reference(s) from NVD

Quick Stats

CVSS v3 Score
6.1 / 10.0
EPSS (Exploit Probability)
0.3%
20th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

Affected Vendors

absinthe-graphql