Low 2.3Published May 8, 2026

CVE-2026-42794Reflected XSS via backslash bypass in GraphiQL js_escape in absinthe_plug

Updated under an hour ago (Oct 27, 2026, 9:00 PM ET)

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No exploitation reported and no EPSS estimate yet.

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Every CVE for absinthe-graphql absinthe_plug

Exploited in the last 30 days

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.

CVSS: 2.3 LOW (v4.0, CNA)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
Weakness (CWE): CWE-79
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: EEF
NVD analysis: Analyzed
Record last updated: May 16, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

absinthe-graphql absinthe_plug absinthe-graphql:absinthe_plug	from 1.2.0 before 1.5.10	CNA record
absinthe-graphql absinthe.plug absinthe-graphql:absinthe.plug	from 1.2.0 before 1.5.10	NVD

References

References

https://github.com/absinthe-graphql/absinthe_plug/issues/275	vendor-advisory, issue-tracking
https://cna.erlef.org/cves/CVE-2026-42794.html	related, third-party-advisory
https://osv.dev/vulnerability/EEF-CVE-2026-42794	related, third-party-advisory
https://github.com/absinthe-graphql/absinthe_plug/commit/23a0d5658d32420086711adf4ce8f05febb09963	patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.