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.
Metrics
Affected Vendors & Products
References
History
Fri, 08 May 2026 17:30:00 +0000
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ssvc
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Fri, 08 May 2026 16:30:00 +0000
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| 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 1.10.2. | 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. |
Fri, 08 May 2026 16:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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 1.10.2. | |
| Title | Reflected XSS via backslash bypass in GraphiQL js_escape in absinthe_plug | |
| First Time appeared |
Absinthe-graphql
Absinthe-graphql absinthe Plug |
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| Weaknesses | CWE-79 | |
| CPEs | cpe:2.3:a:absinthe-graphql:absinthe_plug:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Absinthe-graphql
Absinthe-graphql absinthe Plug |
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| References |
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| Metrics |
cvssV4_0
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Status: PUBLISHED
Assigner: EEF
Published: 2026-05-08T15:42:40.706Z
Updated: 2026-05-08T16:08:26.818Z
Reserved: 2026-04-29T18:06:33.251Z
Link: CVE-2026-42794
Updated: 2026-05-08T16:08:18.115Z
Status : Received
Published: 2026-05-08T16:16:12.750
Modified: 2026-05-08T17:16:31.700
Link: CVE-2026-42794
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