9.1

CVE-2026-114139: Sentry-Javascript: Middleware Bypass when using Tunnel route

Awaiting analysis
AliasesGHSA-mchm-gjx6-7h55CGA-3g59-ph4m-jwv3CGA-24pm-83jf-cwcq
Published 21-10-2026Last modified 28-10-2026

Vulnerability summary

CVE-2026-114139 is a critical (CVSS 9.1) Protection Mechanism Failure vulnerability in getsentry sentry-javascript. EPSS estimates a 0.51% chance of exploitation in the next 30 days, higher than 43.5% of scored vulnerabilities.

Priority
Prioritisesevere

Severe, CVSS 9.1 (CVE.org); no exploitation reported by the 5 checked sources; EPSS 1% (FIRST, 03-11-2026)

Source freshness unavailable

How is this decided?
CVSS score
9.1/10
010
Critical · v4.0 (CVE.org)
EPSS score
0.51%
0%100%
Low · Change unavailable
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Timeline

  1. 21-10-2026
    PublishedVulnerability first disclosed.
  2. 28-10-2026
    Last modifiedVulnerability information updated.

Description

Sentry-Javascript is an official Sentry SDKs for JavaScript. From 9.36.0 until 9.47.2, 10.75.2, and 11.0.0-rc.1, the webpack integration for @sentry/nextjs skips application middleware for every request path under a configured tunnelRoute, while the tunnel rewrite serves only the exact tunnel path with valid o and p query parameters. When an application route directly collides with the tunnel path or a root dynamic segment resolves under it, an unauthenticated request can reach that route without middleware authorization. Exploitation requires tunnelRoute, a webpack build, a colliding route, and middleware being the only authorization control. This issue is fixed in versions 9.47.2, 10.75.2, and 11.0.0-rc.1.

CVSS metrics

5 scores · 5 sources · 1 version

EPSS trend

Probability

0.51%

Chance of exploitation in the next 30 days

Percentile

44%

Versus all other CVEs

30-day change

Change unavailable

Change unavailable

22-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Chainguard9 products
  • langfuse-3All versions (No fix recorded) | < 3.225.12-r5
  • langfuse-3-workerAll versions (No fix recorded) | < 3.225.12-r5
  • langfuse-4< 4.68.0-r1 | All versions (No fix recorded) | < 4.68.0-r2
  • langfuse-4-worker< 4.68.0-r1 | All versions (No fix recorded) | < 4.68.0-r2
  • langfuse-fips-3All versions (No fix recorded) | < 3.225.12-r6
Wolfi2 products
  • langfuse-3All versions (No fix recorded) | < 3.225.12-r5
  • langfuse-3-workerAll versions (No fix recorded) | < 3.225.12-r5
@sentry1 product
  • nextjs≥ 9.36.0, < 9.47.2 | ≥ 10.0.0-alpha.0, < 10.75.2 | ≥ 11.0.0-alpha.0, < 11.0.0-rc.1
Getsentry1 product
  • sentry-javascript≥ 9.36.0, < 9.47.2 | ≥ 10.0.0-alpha.0, < 10.75.2 | ≥ 11.0.0-alpha.0, < 11.0.0-rc.1

4 vendors · 13 products

References

13 links
Show all 13 references