CVE-2023-46729: Sentry Next.js vulnerable to SSRF via Next.js SDK tunnel endpoint

Severity: medium (CVSS 6.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-11-10 · updated 2026-06-17
Weakness: CWE-918

Description

sentry-javascript provides Sentry SDKs for JavaScript. An unsanitized input of Next.js SDK tunnel endpoint allows sending HTTP requests to arbitrary URLs and reflecting the response back to the user. This issue only affects users who have Next.js SDK tunneling feature enabled. The problem has been fixed in version 7.77.0.

Affected products

getsentry sentry-javascript: from 7.26.0 before 7.77.0 — fixed in 7.77.0

How to fix

Upgrade to a fixed version: getsentry sentry-javascript 7.77.0. Check the vendor advisory for mitigations.

References

https://github.com/getsentry/sentry-javascript/commit/ddbda3c02c35aba8c5235e0cf07fc5bf656f81be
https://github.com/getsentry/sentry-javascript/pull/9415
https://github.com/getsentry/sentry-javascript/security/advisories/GHSA-2rmr-xw8m-22q9
https://github.com/getsentry/sentry-javascript/commit/ddbda3c02c35aba8c5235e0cf07fc5bf656f81be
https://github.com/getsentry/sentry-javascript/pull/9415
https://github.com/getsentry/sentry-javascript/security/advisories/GHSA-2rmr-xw8m-22q9

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