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.
References
| Link | Resource |
|---|---|
| https://cna.erlef.org/cves/CVE-2026-42794.html | Third Party Advisory |
| https://github.com/absinthe-graphql/absinthe_plug/commit/23a0d5658d32420086711adf4ce8f05febb09963 | Patch |
| https://github.com/absinthe-graphql/absinthe_plug/issues/275 | Issue Tracking |
| https://osv.dev/vulnerability/EEF-CVE-2026-42794 | Third Party Advisory |
| https://github.com/absinthe-graphql/absinthe_plug/issues/275 | Issue Tracking |
Configurations
History
21 May 2026, 18:51
| Type | Values Removed | Values Added |
|---|---|---|
| First Time |
Absinthe-graphql absinthe.plug
Absinthe-graphql |
|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 6.1 |
| CPE | cpe:2.3:a:absinthe-graphql:absinthe.plug:*:*:*:*:*:*:*:* | |
| References | () https://cna.erlef.org/cves/CVE-2026-42794.html - Third Party Advisory | |
| References | () https://github.com/absinthe-graphql/absinthe_plug/commit/23a0d5658d32420086711adf4ce8f05febb09963 - Patch | |
| References | () https://github.com/absinthe-graphql/absinthe_plug/issues/275 - Issue Tracking | |
| References | () https://osv.dev/vulnerability/EEF-CVE-2026-42794 - Third Party Advisory |
16 May 2026, 11:16
| Type | Values Removed | Values Added |
|---|---|---|
| Summary | (en) 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. |
08 May 2026, 17:16
| Type | Values Removed | Values Added |
|---|---|---|
| Summary | (en) 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. | |
| References | () https://github.com/absinthe-graphql/absinthe_plug/issues/275 - |
08 May 2026, 16:16
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-05-08 16:16
Updated : 2026-05-21 18:51
NVD link : CVE-2026-42794
Mitre link : CVE-2026-42794
CVE.ORG link : CVE-2026-42794
JSON object : View
Products Affected
absinthe-graphql
- absinthe.plug
CWE
CWE-79
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')